A NEW METHOD FOR THE OPTIMIZATION OF INSULATION THICKNESS FOR RADIANT WALL HEATING SYSTEMS

Aliihsan Koca; Gürsel Çetin; Eser Velişan

A NEW METHOD FOR THE OPTIMIZATION OF INSULATION THICKNESS FOR RADIANT WALL HEATING SYSTEMS

Abstract

In this study we proposed a new modified New Degree-Day Method (NDDM) for the optimization of insulation thickness of the wall where the radiant panels are mounted (WMRP) in which heat generation inside the wall is considered. The existing Standard Degree-Day Method (SDDM) is not applicable to estimate the optimum insulation thickness for the buildings where the WMRP is mounted. Because SDDM method uses indoor air temperature as a base temperature, hence heat generation through the WMRP cannot be taken into account. In the new method, important parameters were obtained from the series of the CFD analysis for different thermal transmittance coefficient (U) and outdoor air temperature (To) values are used to create an empirical equation for the estimation of Tp (new base temperature) with the multiple polynomial regression method. Then the numerical results were validated with experimental results which were obtained from the real-size test chamber. Using the new method optimum insulation thickness, net energy saving and payback periods for radiant wall heating systems were calculated (for Istanbul climate) and compared with the results which were obtained using the standard degree-day method (SDDM). The results showed that, the SDDM significantly lower (85-95%) estimates the optimum insulation thickness and can’t be used for the buildings where the WMRP is used. The new method can be used for radiant wall heating systems where the performance of radiant heating systems is significantly affected by the insulation capabilities and has a great importance in the sizing process of the radiant systems.

Keywords

Radiant wall heating,Optimum insulation thickness

References

Acikgoz O., Kincay O., 2015, Experimental and numerical investigation of the correlation between radiative and convective heat-transfer coefficients at the cooled wall of a real-sized room, Energy and Building, 108, 257-266.
Al-Homoud M.S., 2005, Performance characteristics and practical applications of common building thermal insulation materials, Build Environment, 40, 353-66.
ANSI/ASHRAE, 2005, Standard 138: Method of Testing for Rating Ceiling Panels for Sensible Heating and Cooling.
Arslan O., Köse R., 2006, Thermo-economic optimization of insulation thickness considering condensed vapor in buildings, Energy and Buildings, 38, 1400-1408.
ASHRAE, 2008, Handbook-fundamentals Panel heating and cooling, ASHRAE, Atlanta.
Bojic M., Cvetkovic D., Bojic L., 2015, Decreasing energy use and influence to environment by radiant panel heating using different energy sources, Applied Energy, 138, 404-413.
Bolattürk A., 2008, Optimum insulation thicknesses for building walls with respect to cooling and heating degree-hours in the warmest zone of Turkey, Building and Environment, 43, 1055-1064.
Bolattürk A., Dağıdır C., 2013, Determination of optimum insulation thickness for buildings in Hot climate regions by considering solar radiation, J. of Thermal Science and Technology, 33, 1, 87-99.

BS EN 15377-1 Standard, 2008, Heating systems in buildings. Design of embedded water based surface heating and cooling systems. Determination of the design heating and cooling capacity.
BS EN 14037-5 Standard, 2016, Free hanging heating and cooling surfaces for water with a temperature below 120°C. Open or closed heated ceiling surfaces. Test method for thermal output.
Cvetkovi D., Bojic M., 2014, Optimization of thermal insulation of a house heated by using radiant panels, Energy and Buildings, 85, 329-336.
Çomaklı K., Yüksel B., 2003, Optimum insulation thickness of external walls for energy saving, Applied Thermal Engineering, 23, 473-479.
Çomaklı K., Yüksel B., 2004, Environmental impact of thermal insulation thickness in buildings, Applied Thermal Engineering, 24, 933-940.
De Rosa M., Bianco V., Scarpa F., Tagliafico L.A., 2014, Heating and cooling building energy demand evaluation; a simplified model and a modified degree days approach, Applied Energy, 128, 217-229.
Dikmen N., 2011, Performance analysis of the external wall thermal insulation systems applied in residences, J. of Thermal Science and Technology, 31, 1, 67-76.
Dombaycı Ö.A., Gölcü M., Pancar Y., 2006, Optimization of insulation thickness for external walls using different energy sources, Applied Energy, 83, 921-928.
Duman Ö., Koca A., Acet R.C., Çetin G., Gemici Z., 2015, A study on optimum insulation thickness in walls and energy savings based on degree day approach for 3 different demo-sites in Europe, Proceedings of International Conference CISBAT 2015 Future Buildings and Districts Sustainability from Nano to Urban Scale, Lausanne, 155-160 (doi:10.5075/epfl-cisbat2015-155-160).
Ekici B.B., Gulten A.A., Aksoy U.T., 2012, A study on the optimum insulation thicknesses of various types of external walls with respect to different materials, fuels and climate zones in Turkey, Applied Energy, 92, 211-217.
Energy and Natural Resources Ministry of Turkey, 2013, Report: General Energy Balance Table.
EN 1264-5 Standard, 2008, Water based surface embedded heating and cooling systems. Part 5: heating and cooling surfaces embedded in floors, ceilings and walls - determination of the thermal output.
Erikci Çelik S.N., Zorer Gedik G., Parlakyildiz B., Koca A., Çetin M.G, Gemici Z., 2016, The performance evaluation of the modular design of hybrid wall with surface heating and cooling system, A/Z ITU Journal of the Faculty of Architecture, 13, 12, 31-37 (DOI: 10.5505/itujfa.2016.48658).
Erikci Çelik S.N., Zorer Gedik G., Parlakyildiz B., Koca A., Çetin M.G, Gemici Z., 2016, Yüzeyden ısıtma soğutma sistemli modüler hibrid duvar tasarımı ve performansının değerlendirilmesi, 2. Ulusal yapi fiziği ve çevre kontrolü kongresi, İstanbul, 243-252.
Franc S., 1999, Economic viability of cooling ceiling systems, Energy and Building, 30, 195–201.
Hasan A., 1999, Optimizing insulation thickness for buildings using life-cycle cost. Appl. Energ., 63, 115-124.
International Energy Agency, 2013, Report: World Energy Outlook.
Jeong J.W., Mumma S.A., Bahnfleth W.P., 2003, Energy conservation benefits of a dedicated outdoor air system with parallel sensible cooling by ceiling radiant panels, ASHRAE Transactions, 109.
Kanbur B.B., Atayılmaz S.O., Koca A., Gemici Z., Teke İ., 2013, Radyant ısıtma panellerinde açığa çıkan ısı akılarının sayısal olarak incelenmesi, 19. Ulusal Isı Bilimi ve Tekniği Kongresi, Samsun, 1498-1502.
Kanbur B.B., Atayilmaz S.O., Koca A., Gemici Z., Teke İ., 2013, A study on the optimum insulation thickness and energy savings of a radiant heating panel mounted wall for various parameters, 7. Mediterranean congress of climatization, İstanbul, 791-797. Kaya M., İlker F., Comaklı Ö., 2016, Economic analysis of effect on energy saving of thermal insulation at buildings in Erzincan province, J. of Thermal Science and Technology, 36, 1, 47-55.
Kaynakli O., 2008, A study on residential heating energy requirement and optimum insulation thickness, Renewable Energy, 33, 1164-1172.
Kaynakli O., 2012, A review of the economical and optimum thermal insulation thickness for building applications, Renewable and Sustainable Energy Reviews, 16, 415-425.
Kaynakli O., 2013, Optimum thermal insulation thicknesses and payback periods for building walls in turkey, J. of Thermal Science and Technology, 33, 2, 45-55.
Kilkis B., 2006, Cost optimization of hybrid HVAC system with composite radiant wall panels, Applied Thermal Engineering, 26, 10-17.
Koca A., Atayilmaz O., Agra O., 2016, Experimental investigation of heat transfer and dehumidifying performance of novel condensing panel, Energy and Building, 129, 120-137.
Koca A., Gemici Z., Bedir K., 2014, Thermal comfort analysis of novel low exergy radiant heating cooling system and energy saving potential comparing to conventional systems, Book Chapter, Progress in Exergy, Energy and Environment, 38, 435-445.
Koca A., Gemici Z., Topacoglu Y., Cetin G., Acet R.C., Kanbur B.B., 2014, Experimental investigation of heat transfer coefficients between hydronic radiant heated wall and room, Energy and Buildings, 82, 211-221.
Koca A., Gemici Z., Bedir K., 2013, Thermal comfort analysis of novel low exergy radiant heating cooling system and energy saving potential comparing to conventional systems, Proceedings of the Sixth International Exergy, Energy and Environment Symposium (IEEES-6), Rize, 579-590.
Koca A., Gemici Z., Topaçoğlu Y., Çetin G., Acet R.C., Kanbur B.B., 2013, Radyant ısıtma ve soğutma sistemlerinin ısıl konfor analizleri, 11. Ulusal tesisat mühendisliği kongresi, İzmir, 2025-2042.
Koca A., 2011, Duvardan, Yerden, Tavandan Isıtma Soğutma Panellerinin Geliştirilmesi Performans Analizleri ve Örnek Bir Oda Modellenmesi, Msc Thesis, Istanbul Technical University, Istanbul, Turkey.
Miriel J., Serres L., Trombe A., 2002, Radiant ceiling panel heating-cooling systems: experimental and simulated study of the performances, thermal comfort and energy consumptions, Applied Thermal Engineering, 22, 1861-1873.
Olesen B.W., Bonnefoi F., Michel E., De Carli M., 2000, Heat exchange coefficient between floor surface and space by floor cooling – theory or a question of definition, ASHRAE Transactions, DA-00-8-2, 684–694.
Ozel M., 2011, Effect of wall orientation on the optimum insulation thickness by using a dynamic method, Applied Energy, 88, 2429-2435.
Özkan D.B., Onan C., 2011, Optimization of insulation thickness for different glazing areas in buildings for various climatic regions in Turkey, Applied Energy, 88, 1331-1342.
Özel G., Açıkkalp E., Görgün B., Yamık H., Caner N., 2015, Optimum insulation thickness determination using the environmental and life cycle cost analyses based entransy approach, Sustainable Energy Technologies and Assessments, 11, 87–91.
Rhee K., Kim W.K., 2015, A 50 year review of basic and applied research in radiant heating and cooling systems for the built environment, Building and Environment, 91, 166-190.
Seyam S., Huzayyin A., El-Batsh H., Nada S., 2014, Experimental and numerical investigation of the radiant panel heating system using scale room model, Energy and Buildings, 82, 130-141.
Sisman N., Kahya E., Aras N., Aras H., 2007, Determination of optimum insulation thicknesses of the external wall and roof (ceiling) for Turkey’s different degree-day regions, Energy and Policy, 35, 5151-5155.
Stetiu C., 1999, Energy and peak power savings potential of radiant cooling systems in U.S. commercial buildings, Energy and Buildings, 30, 127-138.
TSE 825, 2008, Standard: Thermal Insulation Requirements for Buildings.
Tye-Gingras M., Gosselin L., 2012, Comfort and energy consumption of hydronic heating radiant ceilings and walls based on CFD analysis, Building and Environment, 54, 1-13.
Ucar A., 2010, Thermo-economic analysis method for optimization of insulation thickness for the four different climatic regions of Turkey, Energy, 35, 1854-1864.
Ucar A., Balo F., 2010, Determination of the energy savings and the optimum insulation thickness in the four different insulated exterior walls, Renewable Energy, 35, 88-94
Yıldız A., Gürlek G., Erkek M., Özbalta N., 2008, Economical and environmental analyses of thermal insulation thickness in buildings, J. of Thermal Science and Technology, 28, 2, 25-34.

Details

Primary Language

English

Subjects

Mechanical Engineering

Journal Section

Research Article

Authors

Aliihsan Koca
Türkiye

Gürsel Çetin This is me
Türkiye

Eser Velişan This is me
Türkiye

Publication Date

October 31, 2017

Submission Date

November 10, 2016

Acceptance Date

February 7, 2017

Published in Issue

Year 2017 Volume: 37 Number: 2

IZ

https://izlik.org/JA97XA44RU

Cite

RIS / Bibtex

APA

Koca, A., Çetin, G., & Velişan, E. (2017). A NEW METHOD FOR THE OPTIMIZATION OF INSULATION THICKNESS FOR RADIANT WALL HEATING SYSTEMS. Isı Bilimi Ve Tekniği Dergisi, 37(2), 75-88. https://izlik.org/JA97XA44RU

AMA

1.Koca A, Çetin G, Velişan E. A NEW METHOD FOR THE OPTIMIZATION OF INSULATION THICKNESS FOR RADIANT WALL HEATING SYSTEMS. Isı Bilimi ve Tekniği Dergisi. 2017;37(2):75-88. https://izlik.org/JA97XA44RU

Chicago

Koca, Aliihsan, Gürsel Çetin, and Eser Velişan. 2017. “A NEW METHOD FOR THE OPTIMIZATION OF INSULATION THICKNESS FOR RADIANT WALL HEATING SYSTEMS”. Isı Bilimi Ve Tekniği Dergisi 37 (2): 75-88. https://izlik.org/JA97XA44RU.

EndNote

Koca A, Çetin G, Velişan E (October 1, 2017) A NEW METHOD FOR THE OPTIMIZATION OF INSULATION THICKNESS FOR RADIANT WALL HEATING SYSTEMS. Isı Bilimi ve Tekniği Dergisi 37 2 75–88.

IEEE

[1]A. Koca, G. Çetin, and E. Velişan, “A NEW METHOD FOR THE OPTIMIZATION OF INSULATION THICKNESS FOR RADIANT WALL HEATING SYSTEMS”, Isı Bilimi ve Tekniği Dergisi, vol. 37, no. 2, pp. 75–88, Oct. 2017, [Online]. Available: https://izlik.org/JA97XA44RU

ISNAD

Koca, Aliihsan - Çetin, Gürsel - Velişan, Eser. “A NEW METHOD FOR THE OPTIMIZATION OF INSULATION THICKNESS FOR RADIANT WALL HEATING SYSTEMS”. Isı Bilimi ve Tekniği Dergisi 37/2 (October 1, 2017): 75-88. https://izlik.org/JA97XA44RU.

JAMA

1.Koca A, Çetin G, Velişan E. A NEW METHOD FOR THE OPTIMIZATION OF INSULATION THICKNESS FOR RADIANT WALL HEATING SYSTEMS. Isı Bilimi ve Tekniği Dergisi. 2017;37:75–88.

MLA

Koca, Aliihsan, et al. “A NEW METHOD FOR THE OPTIMIZATION OF INSULATION THICKNESS FOR RADIANT WALL HEATING SYSTEMS”. Isı Bilimi Ve Tekniği Dergisi, vol. 37, no. 2, Oct. 2017, pp. 75-88, https://izlik.org/JA97XA44RU.

Vancouver

1.Aliihsan Koca, Gürsel Çetin, Eser Velişan. A NEW METHOD FOR THE OPTIMIZATION OF INSULATION THICKNESS FOR RADIANT WALL HEATING SYSTEMS. Isı Bilimi ve Tekniği Dergisi [Internet]. 2017 Oct. 1;37(2):75-88. Available from: https://izlik.org/JA97XA44RU