Fossil energy reduction for heating and cooling of buildings using shallow geothermal integrated energy systems – a comprehensive review

Abstract

Ground source heat pumps (GSHP) are a very efficient system for space heating and cooling, and it was established in 1904. GSHPs can minimize the environmental effect of buildings by using the ground as a renewable energy source. The ground will act as a heat sink or heat source. The research collection aims at finding the various possible opportunities for the effec-tive integration of shallow geothermal energy (SGE) to decrease the fossil energy in the built environment and to reduce emission associated with it. The direct utilization of SGE using a ground source heat pump (GSHP) has been reviewed in detail for global north and global south countries, with a primary focus on heating application. The punctual information of results of various authors have been extensively summarized. This review discusses the GSHP installation status, SGE availability, GSHP system simulation, feasibilities, and performance. Worldwide more than one million GSHP systems have been installed, and the system is prev-alent in Europe, the Americas, and Asia. Most of the systems are installed for heating-domi-nated buildings in the global north. This paper also contains the research details pertaining to the last two decades about refrigerants and compressors for the development of GSHP. Finally, the feasibility study and the performance of the GSHP unit for different climatic conditions are reviewed and it is found that the technique is more feasible for cold and dry climatic con-ditions. This paper highlights the recent research findings and a potential gap in the above components for further research and development.

Keywords

• Ground Source Heat Pump (GSHP)
• Shallow Geothermal Energy (SGE)
• GSHP Simulation
• GSHP Feasibility
• Refrigerant
• Compressor

References

1. REFERENCES
2. [1] Pérez-Lombard L, Ortiz J, Pout C. A review on buildings energy consumption information. Energy Build 2008;40:394–398. [CrossRef]
3. [2] Zhang X, Yang J, Zhao X. Optimal study of the rural house space heating systems employing the AHP and FCE methods. Energy 2018;150:631–641. [CrossRef]
4. [3] Zhang Q, Zhang L, Nie J, Li Y. Techno-economic analysis of air source heat pump applied for space heating in northern China. Appl Energy 2017;207:533–542. [CrossRef]
5. [4] Ghoniem AF. Needs, resources and climate change: Clean and efficient conversion technologies. Progr Energy Combust Sci 2011;37:15–51. [CrossRef]
6. [5] Safa AA, Fung AS, Kumar R. Comparative thermal performances of a ground source heat pump and a variable capacity air source heat pump systems for sustainable houses. Appl Therm Eng 2015;81:279–287. [CrossRef]
7. [6] Schibuola L, Scarpa M. Experimental analysis of the performances of a surface water source heat pump. Energy Build 2016;113:182–188. [CrossRef]
8. [7] Bai X, Luo T, Cheng K, Chai F. Experimental study on fouling in the heat exchangers of surface water heat pumps. Appl Therm Eng 2014;70:892–895. [CrossRef]

9. [8] Luo J, Luo Z, Xie J, Xia D, Huang W, Shao H, et al. Investigation of shallow geothermal potentials for different types of ground source heat pump systems (GSHP) of Wuhan city in China. Renewable Energy 2018;118:230–244. [CrossRef]
10. [9] Zhai XQ, Qu M, Yu X, Yang Y, Wang RZ. A review for the applications and integrated approaches of ground-coupled heat pump systems. Renew Sustain Energy Rev 2011;15:3133–3140. [CrossRef]
11. [10] Karytsas S, Choropanitis I. Barriers against and actions towards renewable energy technologies diffusion: A principal component analysis for residential ground source heat pump (GSHP) systems. Renew Sustain Energy Rev 2017;78:252–271. [CrossRef]
12. [11] Chen S, Zhang Q, Li H, Mclellan B, Zhang T, Tan Z. Investment decision on shallow geothermal heating & cooling based on compound options model: A case study of China. Applied Energy. 2019;254:113655. [CrossRef]
13. [12] de Swardt CA, Meyer JP. A performance comparison between an air-source and a ground-source reversible heat pump. Int J Energy Res 2001;25:899–910. [CrossRef]
14. [13] Schibuola L, Scarpa M. Ground source heat pumps in high humidity soils: An experimental analysis. Appl Therm Eng 2016;99:80–91. [CrossRef]
15. [14] Hwang Y, Lee J-K, Jeong Y-M, Koo K-M, Lee D-H, Kim I-K, et al. Cooling performance of a vertical ground-coupled heat pump system installed in a school building. Renew Energy 2009;34:578– 582. [CrossRef]
16. [15] Rees S, Curtis R. National deployment of domestic geothermal heat pump technology: Observations on the UK experience 1995-2013. Energies (Basel) 2014;7:5460–5499. [CrossRef]
17. [16] Sivasakthivel T, Murugesan K, Sahoo PK. A study on energy and CO2 saving potential of ground source heat pump system in India. Renewable and Sustainable Energy Reviews. 2014;32:278– 293. [CrossRef]
18. [17] Esen H, Inalli M, Esen M. Technoeconomic appraisal of a ground source heat pump system for a heating season in eastern Turkey. Energy Convers Manag 2006;47:1281–1297. [CrossRef]
19. [18] Pulat E, Coskun S, Unlu K, Yamankaradeniz N. Experimental study of horizontal ground source heat pump performance for mild climate in Turkey. Energy 2009;34:1284–1295. [CrossRef]
20. [19] Mohanraj M, Belyayev Ye, Jayaraj S, Kaltayev A. Research and developments on solar assisted compression heat pump systems – A comprehensive review (Part A: Modeling and modifications). Renew Sustain Energy Rev 2018;83:90–123. [CrossRef]
21. [20] Dong X, Tian Q, Li Z. Experimental investigation on heating performance of solar integrated air source heat pump. Appl Therm Eng 2017;123:1013–1020. [CrossRef]
22. [21] Li G. Parallel loop configuration for hybrid heat pump – gas fired water heater system with smart control strategy. Appl Therm Eng 2018;138:807–818. [CrossRef]
23. [22] Carvalho AD, Mendrinos D, de Almeida AT. Ground source heat pump carbon emissions and primary energy reduction potential for heating in buildings in Europe - Results of a case study in Portugal. Renew Sustain Energy Rev 2015;45:755–768. [CrossRef]
24. [23] Urchueguía JF, Zacarés M, Corberán JM, Montero Á, Martos J, Witte H. Comparison between the energy performance of a ground coupled water to water heat pump system and an air to water heat pump system for heating and cooling in typical conditions of the European Mediterranean coast. Energy Convers Manag 2008;49:2917–2923. [CrossRef]
25. [24] Michopoulos A, Zachariadis T, Kyriakis N. Operation characteristics and experience of a ground source heat pump system with a vertical ground heat exchanger. Energy 2013;51:349–357. [CrossRef]
26. [25] Åberg M, Fälting L, Lingfors D, Nilsson AM, Forssell A. Do ground source heat pumps challenge the dominant position of district heating in the Swedish heating market? Journal of Cleaner Production. 2020;254:120070. [CrossRef]
27. [26] Mustafa Omer A. Ground-source heat pumps systems and applications. Renew Sustain Energy Rev 2008;12:344–371. [CrossRef]
28. [27] Blum P, Campillo G, Münch W, Kölbel T. CO2 savings of ground source heat pump systems - A regional analysis. Renew Energy 2010;35:122–127. [CrossRef]
29. [28] Johnson EP. Carbon footprints of heating oil and LPG heating systems. Environ Impact Assess Rev 2012;35:11–22. [CrossRef]
30. [29] Self SJ, Reddy B, Rosen MA. Geothermal heat pump systems: Status review and comparison with other heating options. Appl Energy 2013;101:341–348. [CrossRef]
31. [30] Blum P, Campillo G, Munch M, Kolbel T. CO2 savings of ground source heat pump systems – a regional analysis. Renew Energy 2010;35:122–127. [CrossRef]
32. [31] Bayer P, Saner D, Bolay S, Rybach L, Blum P. Greenhouse gas emission savings of ground source heat pump systems in Europe: A review. Renew Sustain Energy Rev 2012;16:1256–1267. [CrossRef]
33. [32] Sivasakthivel T, Murugesan K, Sahoo PK. Potential reduction in CO2 emission and saving in electricity by ground source heat pump system for space heating applications - A study on northern part of India. Procedia Engineering. 2012;38:970–979. [CrossRef]
34. [33] Lund JW, Boyd TL. Direct utilization of geothermal energy 2015 worldwide review. Geothermics 2016;60:66–93. [CrossRef]
35. [34] Lund JW, Freeston DH, Boyd TL. Direct utilization of geothermal energy 2010 worldwide review. Geothermics 2011;40:159–180. [CrossRef]
36. [35] Erbay Z, Hepbasli A. Exergoeconomic evaluation of a ground-source heat pump food dryer at varying dead state temperatures. J Clean Prod 2017;142:1425–1435. [CrossRef]
37. [36] Erbay Z, Hepbasli A. Application of conventional and advanced exergy analyses to evaluate the performance of a ground-source heat pump (GSHP) dryer used in food drying. Energy Convers Manag 2014;78:499–507. [CrossRef]
38. [37] Aresti L, Christodoulides P, Florides G. A review of the design aspects of ground heat exchangers. Renew Sustain Energy Rev 2018;92:757–773. [CrossRef]
39. [38] Wagner V, Blum P, Kübert M, Bayer P. Analytical approach to groundwater-influenced thermal response tests of grouted borehole heat exchangers. Geothermics 2013;46:22–31. [CrossRef]
40. [39] Sanner B. Ground Source Heat Pumps – history , development , current status , and future prospects. 12th IEA Heat Pump Conference 2017. 2017:1–14.
41. [40] National Renewable Energy Laboratory. Geothermal: The energy under our feet. 2006.
42. [41] Majuri P. Ground source heat pumps and environmental policy – The Finnish practitioner’s point of view. J Clean Prod 2016;139:740–749. [CrossRef]
43. [42] Haehnlein S, Bayer P, Blum P. International legal status of the use of shallow geothermal energy. Renew Sustain Energy Rev 2010;14:2611–2625. [CrossRef]
44. [43] Goetzler W, Zogg R, Lisle H, Javier Burgos, Navigant Consulting Inc. Ground ‐ Source Heat Pumps : Overview of Market Status , Barriers to Adoption , and Options for Overcoming Barriers Final Report Submitted to : Prepared By : Heather Lisle. US Department of Energy Energy 2009.
45. [44] Gao Q, Li M, Yu M, Spitler JD, Yan YY. Review of development from GSHP to UTES in China and other countries. Renew Sustain Energy Rev 2009;13:1383–1394. [CrossRef]
46. [45] Geng Y, Sarkis J, Wang X, Zhao H, Zhong Y. Regional application of ground source heat pump in China: A case of Shenyang. Renew Sustain Energy Rev 2013;18:95–102. [CrossRef]
47. [46] Liu X, Lu S, Hughes P, Cai Z. A comparative study of the status of GSHP applications in the United States and China. Renew Sustain Energy Rev 2015;48:558–570. [CrossRef]
48. [47] Kaygusuz K, Kaygusuz A. Geothermal energy in Turkey: The sustainable future. Renew Sustain Energy Rev 2004;8:545–563. [CrossRef]
49. [48] Hepbasli A, Ozgener L. Development of geothermal energy utilization in Turkey: A review. Renew Sustain Energy Rev 2004;8:433–460. [CrossRef]
50. [49] Lee JY. Current status of ground source heat pumps in Korea. Renew Sustain Energy Rev 2009;13:1560–1568. [CrossRef]
51. [50] Somogyi V, Sebestyén V, Nagy G. Scientific achievements and regulation of shallow geothermal systems in six European countries – A review. Renew Sustain Energy Rev 2017;68:934–952. [CrossRef]
52. [51] Bayer P, Attard G, Blum P, Menberg K. The geothermal potential of cities. Renew Sustain Energy Rev 2019;106:1730. [CrossRef]
53. [52] Tsagarakis KP. Shallow geothermal energy under the microscope: Social, economic, and institutional aspects. Renew Energy 2020;147:28012808. [CrossRef]
54. [53] Marshall JR. Assessment of low-temperature geothermal resources of the United States. Geological Survey Circular 1982;892.
55. [54] Negraru PT, Blackwell DD, Erkan K. Heat flow and geothermal potential in the South-Central United States. Nat Resour Res 2008;17:227243. [CrossRef]
56. [55] Majorowicz J, Grasby SE, Skinner WR. Estimation of shallow geothermal energy resource in Canada: Heat gain and heat sink. Nat Resour Res 2009;18:95108. [CrossRef]
57. [56] Xing L, Li L, Gong J, Ren C, Liu J, Chen H. Daily soil temperatures predictions for various climates in United States using data-driven model. Energy 2018;160:430440. [CrossRef]
58. [57] Casasso A, Sethi R. Territorial analysis for the implementation of Geothermal Heat Pumps in the Province of Cuneo (NW Italy). Energy Proced 2015;78:11591164. [CrossRef]
59. [58] Casasso A, Sethi R. Assessment and mapping of the shallow geothermal potential in the province of Cuneo (Piedmont, NW Italy). Renew Energy 2017;102:306315. [CrossRef]
60. [59] Casasso A, Sethi R. G.POT: A quantitative method for the assessment and mapping of the shallow geothermal potential. Energy 2016;106:765773. [CrossRef]
61. [60] Galgaro A, di Sipio E, Teza G, Destro E, de Carli M, Chiesa S, et al. Empirical modeling of maps of geo-exchange potential for shallow geothermal energy at regional scale. Geothermics 2015;57:173184. [CrossRef]
62. [61] García-Gil A, Vázquez-Suñe E, Alcaraz MM, Juan AS, Sánchez-Navarro JA, Montlleó M, et al. GIS-supported mapping of low-temperature geothermal potential taking groundwater flow into account. Renew Energy 2015;77:268278. [CrossRef]
63. [62] Miglani S, Orehounig K, Carmeliet J. A methodology to calculate long-term shallow geothermal energy potential for an urban neighbourhood. Energy Build 2018;159:462473. [CrossRef]
64. [63] Perego R, Pera S, Galgaro A. Techno-economic mapping for the improvement of shallow geothermal management in southern Switzerland. Energies (Basel) 2019;12. [CrossRef]
65. [64] Schiel K, Baume O, Caruso G, Leopold U. GIS-based modelling of shallow geothermal energy potential for CO2 emission mitigation in urban areas. Renew Energy. 2016;86:10231036. [CrossRef]
66. [65] Ondreka J, Rüsgen MI, Stober I, Czurda K. GIS-supported mapping of shallow geothermal potential of representative areas in south-western Germany—Possibilities and limitations. Renew Energy 2007;32:21862200. [CrossRef]
67. [66] Gehlin S, Andersson O. Geothermal Energy Use, Country Update for Sweden. European Geothermal Congress 2016 Strasbourg, France, 19-24 Sept 201. 2016:1-11.
68. [67] Boissavy C, Henry L, Genter A, Pomart A, Rocher P, Schmidlé-bloch V. Geothermal Energy Use, Country Update for France. European Geothermal Congress 2019 Den Haag, The Netherlands, 11-14 June 2019. 2019:1114.
69. [68] Ryżyński G, Żeruń M, Kocyła J. Estimation of Potential Low-temperature Geothermal Energy Extraction from the Closed-loop Systems Based on Analysis, Interpretation and Reclassification of Geological Borehole Dat... Estimation of Potential Low-temperature Geothermal Energy Extraction. Proceedings World Geothermal Congress 2020. 2020.
70. [69] Soldo V, Boban L, Borović S. Vertical distribution of shallow ground thermal properties in different geological settings in Croatia. Renew Energy 2016;99:12021212. [CrossRef]
71. [70] Stegnar G, Staničić D, Česen M, Čižman J, Pestotnik S, Prestor J, et al. A framework for assessing the technical and economic potential of shallow geothermal energy in individual and district heating systems: A case study of Slovenia. Energy 2019;180:405420. [CrossRef]
72. [71] Link K, Rybach L, Wyss R. Geothermal Energy Use, Country Update for Finland. European Geothermal Congress 2013:3-7.
73. [72] Petitclerc E, Dusar M, Declercq P, Hoes H, Laenen B, Vanbrabant Y. Overview and perspectives on shallow geothermal energy in Belgium. European Geothermal Congress 2013, Pisa, Italy, 3-7 June 2013. 2013:3-7.
74. [73] Vangkilde-pedersen T, Ditlefsen C, Højberg AL. Shallow geothermal energy in Denmark. Geologic Survey Denmark Greenland Bullet 2012;26:3740. [CrossRef]
75. [74] Allen A, Milenic D, Sikora P. Shallow gravel aquifers and the urban “heat island” effect: A source of low enthalpy geothermal energy. Geothermics 2003;32:569578. [CrossRef]
76. [75] Kalogirou SA, Florides GA, Pouloupatis PD, Panayides I, Joseph-Stylianou J, Zomeni Z. Artificial neural networks for the generation of geothermal maps of ground temperature at various depths by considering land configuration. Energy 2012;48:233240. [CrossRef]
77. [76] Bundschuh J, Chandrasekharam D. Geothermal Systems and Energy Resources. 2014. [CrossRef]
78. [77] Kljajić M, Anđelković AS, Hasik V, Munćan VM, Bilec M. Shallow geothermal energy integration in district heating system: An example from Serbia. Renew Energy 2020;147:2791–2800. [CrossRef]
79. [78] Buday T, Buday-Bódi E, McIntosh RW, Kozák M. Geoinformatic background of geothermal energy utilization and its applications in East Hungary. Landscape Environ 2016;10:145–152. [CrossRef]
80. [79] Ally MR, Munk JD, Baxter VD, Gehl AC. Data, exergy, and energy analyses of a vertical-bore, ground-source heat pump for domestic water heating under simulated occupancy conditions. Appl Therm Eng 2015;89:192–203. [CrossRef]
81. [80] Han C, Yu XB. Performance of a residential ground source heat pump system in sedimentary rock formation. Appl Energy 2016;164:89–98. [CrossRef]
82. [81] Wang S, Liu X, Gates S. Comparative study of control strategies for hybrid GSHP system in the cooling dominated climate. Energy Build 2015;89:222–230. [CrossRef]
83. [82] Khan MA, Wang JX. Development of a graph method for preliminary design of borehole ground-coupled heat exchanger in North Louisiana. Energy Build 2015;92:389–397. [CrossRef]
84. [83] Li G. Investigations of life cycle climate performance and material life cycle assessment of packaged air conditioners for residential application. Sustain Energy Technol Assess 2015;11:114– 125. [CrossRef]
85. [84] Ally MR, Munk JD, Baxter VD, Gehl AC. Exergy analysis of a two-stage ground source heat pump with a vertical bore for residential space conditioning under simulated occupancy. Appl Energy 2015;155:502–514. [CrossRef]
86. [85] Wu W, Skye HM, Lin L. Progress in ground-source heat pumps using natural refrigerants. Int J Refrig 2018;92:7085. [CrossRef]
87. [86] Liu X, Hong T. Comparison of energy efficiency between variable refrigerant flow systems and ground source heat pump systems. Energy Build 2010;42:584–589. [CrossRef]
88. [87] Marmaras J, Burbank J, Kosanovic DB. Primary-secondary de-coupled ground source heat pump systems coefficient of performance optimization through entering water temperature control. Appl Therm Eng 2016;96:107–116. [CrossRef]
89. [88] Wang S. Energy modeling of ground source heat pump vs. variable refrigerant flow systems in representative US climate zones. Energy Build 2014;72:222–228. [CrossRef]
90. [89] Shen P, Lukes JR. Impact of global warming on performance of ground source heat pumps in US climate zones. Energy Conversion and Management. 2015;101:632–643. [CrossRef]
91. [90] Wang S, Liu X, Gates S. An introduction of new features for conventional and hybrid GSHP simulations in eQUEST 3.7. Energy Build 2015;105:368–376. [CrossRef]
92. [91] Zhu Y, Tao Y, Rayegan R. A comparison of deterministic and probabilistic life cycle cost analyses of ground source heat pump (GSHP) applications in hot and humid climate. Energy Build 2012;55:312–321. [CrossRef]
93. [92] Yin P, Pate M, Battaglia F. In-field performance evaluation and economic analysis of residential ground source heat pumps in heating operation. J Build Eng 2019;26. [CrossRef]
94. [93] Self SJ, Reddy B, Rosen MA. Ground source heat pumps for heating: Parametric energy analysis of a vapor compression cycle utilizing an economizer arrangement. Appl Therm Eng 2013;52:245–254. [CrossRef]
95. [94] Alavy M, Nguyen H v., Leong WH, Dworkin SB. A methodology and computerized approach for optimizing hybrid ground source heat pump system design. Renew Energy 2013;57:404–412. [CrossRef]
96. [95] Muñoz M, Garat P, Flores-Aqueveque V, Vargas G, Rebolledo S, Sepúlveda S, et al. Estimating low-enthalpy geothermal energy potential for district heating in Santiago basin-Chile (33.5°S). Renew Energy 2015;76:186–195. [CrossRef]
97. [96] Simon F, Ordoñez J, Reddy TA, Girard A, Muneer T. Developing multiple regression models from the manufacturer’s ground-source heat pump catalogue data. Renew Energy 2016;95:413– 421. [CrossRef]
98. [97] Aira R, Fernández-Seara J, Diz R, Pardiñas Á. Experimental analysis of a ground source heat pump in a residential installation after two years in operation. Renew Energy 2017;114:1214–1223. [CrossRef]
99. [98] Corberan JM, Finn DP, Montagud CM, Murphy FT, Edwards KC. A quasi-steady state mathematical model of an integrated ground source heat pump for building space control. Energy Build 2011;43:82–92. [CrossRef]
100. [99] Cervera-Vázquez J, Montagud C, Corberán JM. In situ optimization methodology for the water circulation pumps frequency of ground source heat pump systems: Analysis for multistage heat pump units. Energy Build 2015;88:238–247. [CrossRef]
101. [100] Cervera-Vázquez J, Montagud C, Corberán JM. In situ optimization methodology for ground source heat pump systems: Upgrade to ensure user comfort. Energy Build 2015;109:195–208. [CrossRef]
102. [101] Romaní J, Pérez G, de Gracia A. Experimental evaluation of a heating radiant wall coupled to a ground source heat pump. Renew Energy 2017;105:520–529. [CrossRef]
103. [102] Montagud C, Corberán JM, Ruiz-Calvo F. Experimental and modeling analysis of a ground source heat pump system. Appl Energy 2013;109:328–336. [CrossRef]
104. [103] Montagud C, Corberán JM, Montero Á, Urchueguía JF. Analysis of the energy performance of a ground source heat pump system after five years of operation. Energy Build 2011;43:3618– 3626. [CrossRef]
105. [104] Szreder M. A field study of the performance of a heat pump installed in a low energy house. Appl Therm Eng 2014;71:596–606. [CrossRef]
106. [105] İnallı M, Esen H. Experimental thermal performance evaluation of a horizontal ground-source heat pump system. Appl Therm Eng 2004;24:2219–2232. [CrossRef]
107. [106] Ozyurt O, Ekinci DA. Experimental study of vertical ground-source heat pump performance evaluation for cold climate in Turkey. Appl Energy 2011;88:1257–1265. [CrossRef]
108. [107] Bakirci K. Evaluation of the performance of a ground-source heat-pump system with series GHE (ground heat exchanger) in the cold climate region. Energy 2010;35:3088–3096. [CrossRef]
109. [108] Bakirci K, Colak D. Effect of a superheating and sub-cooling heat exchanger to the performance of a ground source heat pump system. Energy 2012;44:996–1004. [CrossRef]
110. [109] Akbulut U, Utlu Z, Kincay O. Exergoenvironmental and exergoeconomic analyses of a vertical type ground source heat pump integrated wall cooling system. Appl Therm Eng 2016;102:904– 921. [CrossRef]
111. [110] Ozgener O, Hepbasli A. A review on the energy and exergy analysis of solar assisted heat pump systems. Renew Sustain Energy Rev 2007;11:482–496. [CrossRef]
112. [111] Dehghan BB. Experimental and computational investigation of the spiral ground heat exchangers for ground source heat pump applications. Appl Therm Eng 2017;121:908–921. [CrossRef]
113. [112] Dehghan BB. Effectiveness of using spiral ground heat exchangers in ground source heat pump system of a building for district heating/cooling purposes: Comparison among different configurations. Appl Therm Eng 2018;130:1489–1506. [CrossRef]
114. [113] Ozcan O, Ozgener O. Energetic and exergetic performance analysis of Bethe-Zeldovich-Thompson (BZT) fluids in geothermal heat pumps. Int J Refrig 2011;34:1943–1952. [CrossRef]
115. [114] Luo J, Rohn J, Bayer M, Priess A, Wilkmann L, Xiang W. Heating and cooling performance analysis of a ground source heat pump system in Southern Germany. Geothermics 2015;53:57–66. [CrossRef]
116. [115] Retkowski W, Thöming J. Thermoeconomic optimization of vertical ground-source heat pump systems through nonlinear integer programming. Appl Energy 2014;114:492–503. [CrossRef]
117. [116] Florides GA, Christodoulides P, Pouloupatis P. An analysis of heat flow through a borehole heat exchanger validated model. Appl Energy 2012;92:523–533. [CrossRef]
118. [117] Christodoulides P, Aresti L, Florides G. Air-conditioning of a typical house in moderate climates with Ground Source Heat Pumps and cost comparison with Air Source Heat Pumps. Appl Therm Eng 2019;158. [CrossRef]
119. [118] Bagdanavicius A, Jenkins N. Power requirements of ground source heat pumps in a residential area. Appl Energy 2013;102:591–600. [CrossRef]
120. [119] McMahon R, Santos H, Mourão ZS. Practical considerations in the deployment of ground source heat pumps in older properties—A case study. Energy Build 2018;159:54–65. [CrossRef]
121. [120] Garber D, Choudhary R, Soga K. Risk based lifetime costs assessment of a ground source heat pump (GSHP) system design: Methodology and case study. Build Environ 2013;60:66–80. [CrossRef]
122. [121] Luo Z, Asproudi C. Subsurface urban heat island and its effects on horizontal ground-source heat pump potential under climate change. Appl Therm Eng 2015;90:530–537. [CrossRef]
123. [122] Schibuola L, Tambani C, Zarrella A, Scarpa M. Ground source heat pump performance in case of high humidity soil and yearly balanced heat transfer. Energy Convers Manag 2013;76:956– 970. [CrossRef]
124. [123] del Col D, Azzolin M, Benassi G, Mantovan M. Energy efficiency in a ground source heat pump with variable speed drives. Energy Build 2015;91:105–114. [CrossRef]
125. [124] lo Russo S, Boffa C, Civita M. Low-enthalpy geothermal energy: An opportunity to meet increasing energy needs and reduce CO2and atmospheric pollutant emissions in Piemonte, Italy. Geothermics 2009;38:254–262. [CrossRef]
126. [125] Lucia U, Simonetti M, Chiesa G, Grisolia G. Ground-source pump system for heating and cooling: Review and thermodynamic approach. Renew Sustain Energy Rev 2017;70:867–874. [CrossRef]
127. [126] Karlsson F, Fahlén P. Capacity-controlled ground source heat pumps in hydronic heating systems. Int J Refrig 2007;30:221–229. [CrossRef]
128. [127] Kharseh M, Altorkmany L, Al-Khawaja M, Hassani F. Analysis of the effect of global climate change on ground source heat pump systems in different climate categories. Renew Energy 2015;78:219–225. [CrossRef]
129. [128] Kharseh M, Altorkmany L, Nordell B. Global warming’s impact on the performance of GSHP. Renew Energy 2011;36:1485–1491. [CrossRef]
130. [129] Karampour M, Sawalha S. State-of-the-art integrated CO2 refrigeration system for supermarkets: A comparative analysis. Int J Refrig 2018;86:239–257. [CrossRef]
131. [130] Koroneos CJ, Nanaki EA. Environmental impact assessment of a ground source heat pump system in Greece. Geothermics 2017;65:1–9. [CrossRef]
132. [131] Partenay V, Riederer P, Salque T, Wurtz E. The influence of the borehole short-time response on ground source heat pump system efficiency. Energy Build 2011;43:1280–1287. [CrossRef]
133. [132] Paiho S, Pulakka S, Knuuti A. Life-cycle cost analyses of heat pump concepts for Finnish new nearly zero energy residential buildings. Energy Build 2017;150:396–402. [CrossRef]
134. [133] Zarrella A, Emmi G, de Carli M. Analysis of operating modes of a ground source heat pump with short helical heat exchangers. Energy Convers Manag 2015;97:351–361. [CrossRef]
135. [134] Lee CK. Dynamic performance of ground-source heat pumps fitted with frequency inverters for part-load control. Appl Energy 2010;87:3507–3513. [CrossRef]
136. [135] Li H, Nagano K, Lai Y, Shibata K, Fujii H. Evaluating the performance of a large borehole ground source heat pump for greenhouses in northern Japan. Energy 2013;63:387–399. [CrossRef]
137. [136] Farabi-Asl H, Fujii H, Kosukegawa H. Cooling tests, numerical modeling and economic analysis of semi-open loop ground source heat pump system. Geothermics 2018;71:34–45. [CrossRef]
138. [137] Genchi Y, Kikegawa Y, Inaba A. CO2 payback-time assessment of a regional- scale heating and cooling system using a ground source heat-pump in a high energy-consumption area in Tokyo. Appl Energy 2002;71:147–160. [CrossRef]
139. [138] Nagano K, Katsura T, Takeda S. Development of a design and performance prediction tool for the ground source heat pump system. Appl Therm Eng 2006;26:1578–1592. [CrossRef]
140. [139] Naili N, Attar I, Hazami M, Farhat A. First in situ operation performance test of ground source heat pump in Tunisia. Energy Convers Manag 2013;75:292–301. [CrossRef]
141. [140] Naili N, Hazami M, Attar I, Farhat A. Assessment of surface geothermal energy for air conditioning in northern Tunisia: Direct test and deployment of ground source heat pump system. Energy Build 2016;111:207–217. [CrossRef]
142. [141] Choi JM, Park Y, Kang SH. Heating performance verification of a ground source heat pump system with U-tube and double tube type GLHEs. Renew Energy 2013;54:32–39. [CrossRef]
143. [142] Cho H, Choi JM. The quantitative evaluation of design parameter’s effects on a ground source heat pump system. Renew Energy 2014;65:2–6. [CrossRef]
144. [143] Choi JM, Jang YS. Assessment of design strategies in a ground source heat pump system. Energy Build 2017;138:301–308. [CrossRef]
145. [144] Jeong J, Hong T, Kim J, Chae M, Ji C. Multi-criteria analysis of a self-consumption strategy for building sectors focused on ground source heat pump systems. J Clean Prod 2018;186:68–80. [CrossRef]
146. [145] Kwon O, Bae KJ, Park C. Cooling characteristics of ground source heat pump with heat exchange methods. Renew Energy 2014;71:651–657. [CrossRef]
147. [146] Shim BO, Park CH. Ground thermal conductivity for (ground source heat pumps) GSHPs in Korea. Energy 2013;56:167–174. [CrossRef]
148. [147] Kim Y-J, Chang K-S. Development of a thermodynamic performance-analysis program for CO2 geothermal heat pump system. J Ind Eng Chem 2013;19:1827–1837. [CrossRef]
149. [148] Noorollahi Y, Gholami Arjenaki H, Ghasempour R. Thermo-economic modeling and GIS-based spatial data analysis of ground source heat pump systems for regional shallow geothermal mapping. Renew Sustain Energy Rev 2017;72:648–660. [CrossRef]
150. [149] Habibi M, Hakkaki-Fard A. Long-term energy and exergy analysis of heat pumps with different types of ground and air heat exchangers. Int J Refrig 2019;100:414–433. [CrossRef]
151. [150] Zhai XQ, Yang Y. Experience on the application of a ground source heat pump system in an archives building. Energy Build 2011;43:3263–3270. [CrossRef]
152. [151] Xi J, Li Y, Liu M, Wang RZ. Study on the thermal effect of the ground heat exchanger of GSHP in the eastern China area. Energy 2017;141:56–65. [CrossRef]
153. [152] Hu P, Hu Q, Lin Y, Yang W, Xing L. Energy and exergy analysis of a ground source heat pump system for a public building in Wuhan, China under different control strategies. Energy Build 2017;152:301–312. [CrossRef]
154. [153] Deng Y, Feng Z, Fang J, Cao SJ. Impact of ventilation rates on indoor thermal comfort and energy efficiency of ground-source heat pump system. Sustain Cities Soc 2018;37:154163. [CrossRef]
155. [154] Yu X, Zhai XQ, Wang RZ. Design and performance of a constant temperature and humidity air-conditioning system driven by ground source heat pumps in winter. Energy Convers Manag 2010;51:21622168. [CrossRef]
156. [155] Luo J, Zhao H, Jia J, Xiang W, Rohn J, Blum P. Study on operation management of borehole heat exchangers for a large-scale hybrid ground source heat pump system in China. Energy 2017;123:340352. [CrossRef]
157. [156] Zhang S, Zhang L, Wei H, Jing J, Zhou X, Zhang X. Field testing and performance analyses of ground source heat pump systems for residential applications in Hot Summer and Cold Winter area in China. Energy Build 2016;133:615627. [CrossRef]
158. [157] Yu X, Wang RZ, Zhai XQ. Year round experimental study on a constant temperature and humidity air-conditioning system driven by ground source heat pump. Energy 2011;36:13091318. [CrossRef]
159. [158] Zhao L, Zhao LL, Zhang Q, Ding GL. Theoretical and basic experimental analysis on load adjustment of geothermal heat pump systems. Energy Convers Manag 2003;44:19. [CrossRef]
160. [159] Liu Z, Xu W, Qian C, Chen X, Jin G. Investigation on the feasibility and performance of ground source heat pump (GSHP) in three cities in cold climate zone, China. Renew Energy 2015;84:8996. [CrossRef]
161. [160] Yang J, Xu L, Hu P, Zhu N, Chen X. Study on intermittent operation strategies of a hybrid ground-source heat pump system with double-cooling towers for hotel buildings. Energy Build 2014;76:506512. [CrossRef]
162. [161] Yan L, Hu P, Li C, Yao Y, Xing L, Lei F, et al. The performance prediction of ground source heat pump system based on monitoring data and data mining technology. Energy Build 2016;127:10851095. [CrossRef]
163. [162] Pu L, Qi D, Xu L, Li Y. Optimization on the performance of ground heat exchangers for GSHP using Kriging model based on MOGA. Appl Therm Eng 2017;118:480489. [CrossRef]
164. [163] Zhai XQ, Wang XL, Pei HT, Yang Y, Wang RZ. Experimental investigation and optimization of a ground source heat pump system under different indoor set temperatures. Appl Therm Eng 2012;48:105116. [CrossRef]
165. [164] Huang B, Mauerhofer V. Life cycle sustainability assessment of ground source heat pump in Shanghai, China. J Clean Product 2016;119:207214. [CrossRef]
166. [165] Sivasakthivel T, Murugesan K, Sahoo PK. Study of technical, economical and environmental viability of ground source heat pump system for Himalayan cities of India. Renew Sustain Energy Rev 2015;48:452462. [CrossRef]
167. [166] Sivasakthivel T, Murugesan K, Sahoo PK. Optimization of ground heat exchanger parameters of ground source heat pump system for space heating applications. Energy 2014;78:573586.
168. [167] Xia L, Ma Z, McLauchlan C, Wang S. Experimental investigation and control optimization of a ground source heat pump system. Appl Therm Eng 2017;127:7080. [CrossRef]
169. [168] Holmberg H, Acuña J, Næss E, Sønju OK. Deep Borehole Heat Exchangers, Application to Ground Source Heat Pump Systems. 2015:1925.
170. [169] Lu Q, Narsilio GA, Aditya GR, Johnston IW. Economic analysis of vertical ground source heat pump systems in Melbourne. Energy 2017;125:107117. [CrossRef]
171. [170] Kharseh M, Al-Khawaja M, Suleiman MT. Potential of ground source heat pump systems in cooling-dominated environments: residential buildings. Geothermics 2015;57:104110. [CrossRef]
172. [171] Hu H, Eikevik TM, Neksa P, Hafner A, Ding G, Huang Q, et al. Performance analysis of an R744 ground source heat pump system with air-cooled and water-cooled gas coolers. Int J Refrig 2016;63:7286. [CrossRef]
173. [172] Tsagarakis KP, Efthymiou L, Michopoulos A, Mavragani A, Anđelković AS, Antolini F, et al. A review of the legal framework in shallow geothermal energy in selected European countries: Need for guidelines. Renew Energy 2020;147:25562571. [CrossRef]
174. [173] Hein P, Zhu K, Bucher A, Kolditz O, Pang Z, Shao H. Quantification of exploitable shallow geothermal energy by using Borehole Heat Exchanger coupled Ground Source Heat Pump systems. Energy Convers Manag 2016;127:8089. [CrossRef]
175. [174] García-Gil A, Goetzl G, Kłonowski MR, Borovic S, Boon DP, Abesser C, et al. Governance of shallow geothermal energy resources. Energy Policy 2020;138:111283. [CrossRef]
176. [175] Bertermann D, Klug H, Morper-Busch L. A pan-European planning basis for estimating the very shallow geothermal energy potentials. Renew Energy 2015;75:335347. [CrossRef]
177. [176] Perego R, Pera S, Galgaro A, Santa GD, Cultrera M, Carli M de, et al. Economic, geological and technical potential mapping test for GSHP systems in Europe. 2019:10.
178. [177] Bertermann D, Klug H, Morper-Busch L, Bialas C. Modelling vSGPs (very shallow geothermal potentials) in selected CSAs (case study areas). Energy 2014;71:226244. [CrossRef]
179. [178] Shrestha G, Uchida Y, Yoshioka M, Fujii H, Ioka S. Assessment of development potential of ground-coupled heat pump system in Tsugaru Plain, Japan. Renew Energy 2015;76:249257. [CrossRef]
180. [179] Hamamoto H, Miyashita Y, Tahara D. Evaluation of the Shallow Geothermal Potential for a Ground-Source Heat Exchanger: A Case Study in Obama Plain, Fukui Prefecture, Japan. The Water-Energy-Food Nexus, Glob Environ Stud 2018:6984. [CrossRef]
181. [180] Nam Y, Ooka R. Development of potential map for ground and groundwater heat pump systems and the application to Tokyo. Energy Build 2011;43:677685. [CrossRef]
182. [181] Seward A, Prieto A, Climo M. Thermal Properties of New Zealand ’ S Rocks and Soils. New Zealand Geothermal Workshop 2013 Proceedings 17 -20 November 2013 Rotorua, New Zealand 2013:1–8.
183. [182] Aditya GR, Narsilio GA, Johnston IW, Disfani MM. Full-Scale Instrumented Residential Ground Source Heat Pump Systems in Melbourne, Australia. In: Ferrari A, Laloui L, editors. Energy Geotechnics, Cham: Springer International Publishing; 2019, p. 185–191. [CrossRef]
184. [183] Roth P, Georgiev A, Busso A, Barraza E. First in situ determination of ground and borehole thermal properties in Latin America. Renew Energy 2004;29:1947–1963. [CrossRef]
185. [184] Alves ABM, Schmid AL. Cooling and heating potential of underground soil according to depth and soil surface treatment in the Brazilian climatic regions. Energy Build 2015;90:41–50. [CrossRef]
186. [185] Zhu J, Hu K, Lu X, Huang X, Liu K, Wu X. A review of geothermal energy resources, development, and applications in China: Current status and prospects. Energy 2015;93:466–483. [CrossRef]
187. [186] Su C, Madani H, Palm B. Spatial data assisted ground source heat pump potential analysis in China, a case of Qingdao city. Energy Procedia, vol. 158, Elsevier Ltd; 2019, p. 6099–6104. [CrossRef]
188. [187] Wang G, Wang W, Luo J, Zhang Y. Assessment of three types of shallow geothermal resources and ground-source heat-pump applications in provincial capitals in the Yangtze River Basin, China. Renew Sustain Energy Rev 2019;111:392–421. [CrossRef]
189. [188] Ji D. Geothermal resources and utilization in Tibet and the Himalayas. Workshop for Decision Makers on Direct Heating Use of Geothermal Resources in Asia, Organized by UNU-GTP, TBLRREM and TBGMED, in Tianjin, China 2008:11–18.
190. [189] Shah M, Sircar A, Shaikh N, Patel K, Thakar V, Sharma D, et al. Groundwater analysis of Dholera geothermal field, Gujarat, India for suitable applications. Groundwater Sustain Develop 2018;7:143–156. [CrossRef]
191. [190] Shah M, Sircar A, Patel K, Shaikh N, Thakar V, Vaidya D, et al. Comprehensive Study on Hybrid Geothermal-Solar Cooling Systems With Special Focus on Gujarat, Western India. Proc West Mark Ed Assoc Conf 2018.
192. [191] Lebbihiat N, Atia A, Arıcı M, Meneceur N. Geothermal energy use in Algeria: A review on the current status compared to the worldwide, utilization opportunities and countermeasures. J Clean Prod 2021;302. [CrossRef]
193. [192] Lim H, Kim C, Cho Y, Kim M. Energy saving potentials from the application of heat pipes on geothermal heat pump system. Appl Therm Eng 2017;126:1191–1198. [CrossRef]
194. [193] ANSI/ARI/ASHRAE/ISO 13256-2, Water-source Heat Pumps - Testing and Rating for Performance - Part 2: Water-to-water and Brine-to-water Heat Pumps, ANSI/AHRI/ASHRAE/ISO. 1998.
195. [194] Park H, Lee JS, Kim W, Kim Y. The cooling seasonal performance factor of a hybrid ground-source heat pump with parallel and serial configurations. Appl Energy 2013;102:877–884. [CrossRef]
196. [195] Arat H, Arslan O. Exergoeconomic analysis of district heating system boosted by the geothermal heat pump. Energy 2017;119:1159–1170. [CrossRef]
197. [196] Radulovic J. Performance of low GWP fluids in heat pump systems. J Therm Eng 2016;2:748–753. [CrossRef]
198. [197] Ozgener O, Ozgener L. Modeling of driveway as a solar collector for improving efficiency of solar assisted geothermal heat pump system: a case study. Renew Sustain Energy Rev 2015;46:210–217. [CrossRef]
199. [198] Balaji K. Energy Demand Reduction in the Built Environment Using Shallow Geothermal Integrated Energy Systems—A Comprehensive Review: Part I. Design Consideration of Ground Heat Exchanger. ASME J Eng Sustain Build Cities 2021;2. [CrossRef]
200. [199] Li HQ, Kang SS, Yu Z, Cai B, Zhang GQ. A feasible system integrating combined heating and power system with ground-source heat pump. Energy 2014;74:240–247. [CrossRef]
201. [200] Lamarche L, Kajl S, Beauchamp B. A review of methods to evaluate borehole thermal resistances in geothermal heat-pump systems. Geothermics 2010;39:187–200. [CrossRef]
202. [201] Zheng X. Long-term Effects of Ground Source Heat Pumps on Underground Temperature. 2013:16.
203. [202] Sel. Trnsys 16 Manual. 2006;1.
204. [203] Hirsch J. eQUEST introductory tutorial. Equest Introductory Tutorial. 2009;3,63:174.
205. [204] Kumar B, Sharma V. Energy demand reduction in the built environment using shallow geothermal integrated energy systems: Part II – Hybrid ground source heat pump for building heating. ASME J Eng Sustain Build Cities 2021;2:137. [CrossRef]
206. [205] Zhu Y, Jiang Y. DeST – A Simulation Tool in HVAC Commissioning. 2003:1-11.
207. [206] IGSHPA. GLHEPro 4.1: Users’ Guide. Oklahoma State University. 2014.
208. [207] Manual U. User ’ S Manual. 2001:129.
209. [208] Hellström G, Sanner B. Earth Energy Designer. Database. 2000:4.
210. [209] FlexPDE 7. 2018.
211. [210] DHI WASY. Feflow 7.1 ®. 2017.
212. [211] Aspen Technology Inc. Aspen Plus ® User Guide. Aspen Technology, Inc. 2000:936.
213. [212] Comsol. Comsol Multiphysics User’s Guide. Heat Transf Branch 2012:709745.
214. [213] RETScreen International. RETScreen® Software online user manual, Photovoltaic project model. 2005.
215. [214] Cho S, Ray S, Im P, Honari H, Ahn J. Methodology for energy strategy to prescreen the feasibility of Ground Source Heat Pump systems in residential and commercial buildings in the United States. Energy Strategy Rev 2017;18:5362. [CrossRef]
216. [215] Cho S, Ray S, Im P, Honari H, Ahn J. Application priority of GSHP systems in the climate conditions of the United States. Advances in Building Energy Research. 2019;13:117. [CrossRef]
217. [216] Nguyen H, Law YLE, Alavy M, Walsh PR, Leong WH, Dworkin SB. An analysis of the factors affecting hybrid ground-source heat pump installation potential in North America. Appl Energy 2014;125:2838. [CrossRef]
218. [217] Kikuchi E, Bristow D, Kennedy CA. Evaluation of region-specific residential energy systems for GHG reductions: Case studies in Canadian cities. Energy Policy 2009;37:12571266. [CrossRef]
219. [218] Aikins KA, Choi JM. Current status of the performance of GSHP (ground source heat pump) units in the Republic of Korea. Energy 2012;47:7782. [CrossRef]
220. [219] Stafford A, Lilley D. Predicting in situ heat pump performance: An investigation into a single ground-source heat pump system in the context of 10 similar systems. Energy Build 2012;49:536541. [CrossRef]
221. [220] Zhang S, Zhang L, Zhang X. Performance evaluation of existed ground source heat pump systems in buildings using auxiliary energy efficiency index: Cases study in Jiangsu, China. Energy Build 2017;147:90100. [CrossRef]
222. [221] Cai B, Liu Y, Fan Q, Zhang Y, Liu Z, Yu S, et al. Multi-source information fusion based fault diagnosis of ground-source heat pump using Bayesian network. Appl Energy 2014;114:19. [CrossRef]
223. [222] Sakhri N, Menni Y, Ameur H, Chamkha AJ. Experimental study of a stand-alone earth to air heat exchanger for heating and cooling in arid regions. J Therm Eng 2021;7:12061215. [CrossRef]
224. [223] Hadjadj A, Atia A, haoua B ben, Arıcı M, Naili N, Kaddour A. Energy and exergy analyses of a helicoidal water to air geothermal heat exchanger for arid regions. Energy Sources, Part A: Recovery, Utilization, and Environmental Effects. 2021:116. [CrossRef]
225. [224] Edwards KC, Finn DP. Generalised water flow rate control strategy for optimal part load operation of ground source heat pump systems. Appl Energy 2015;150:5060. [CrossRef]
226. [225] Pandey N, Murugesan K, Thomas HR. Optimization of ground heat exchangers for space heating and cooling applications using Taguchi method and utility concept. Appl Energy 2017;190:421438. [CrossRef]
227. [226] Lim TH, de Kleine RD, Keoleian GA. Energy use and carbon reduction potentials from residential ground source heat pumps considering spatial and economic barriers. Energy Build 2016;128:287304. [CrossRef]
228. [227] Galgaro A, Dalla Santa G, de Carli M, Emmi G, Zarrella A, Mueller J, et al. New tools to support the designing of efficient and reliable ground source heat exchangers: the Cheap-GSHPs databases and maps. Adv Geosci 2019;49:4755. [CrossRef]