Modeling of the Effect of Outdoor Parameters Affecting the Performance of the Heat Pump on the Evaporator and Condenser Temperature

Year 2024, EARLY VIEW, 1 - 1

Mehmet Özdemir , Mustafa Kemal Onat , Ayhan Onat , İsmail Ekmekci

Abstract

The effect of the outdoor parameters affecting the performance of the air source heat pump, which is one of the most important alternatives to achieve the zero emission target and reduce external dependence on energy, on the condenser condensation temperature and evaporator evaporation temperature was investigated by moderated mediation analysis in cooling mode. Furthermore, as a result of the optimization study, mathematical equations based on external environmental parameters were extracted. With the optimization model used in this study, the effect of outdoor temperature, wind direction, and relative humidity on condenser condensation temperature was found to be 39,82%, 24,72%, and 7,65%, respectively. The outdoor temperature has a negative indirect effect on the evaporator evaporation temperature by 1,32%. It was discovered that relative humidity has a 0,63% effect on the interaction between outdoor temperature, wind direction, and evaporator temperature.

Keywords

Moderated mediation analiz, air source heat pump, evaporator and condenser temperature, outdoor temperature

Isı Pompasının Performansını Etkileyen Dış Ortam Parametrelerinin Evaporatör ile Kondenser Sıcaklığı Üzerindeki Etkisinin Modellenmesi

Abstract

Sıfır emisyon hedefini yakalamak ve enerjide dışa bağımlılığı azaltmak için en önemli alternatiflerden biri olan hava kaynaklı ısı pompasının performansını etkileyen dış ortam parametrelerinin kondenser yoğuşma sıcaklığı ve evaporatör buharlaşma sıcaklığı üzerindeki etkisi soğutma modunda moderated mediation analizi ile araştırılmıştır. Bu çalışmada, soğutma modunda çalışan hava kaynaklı ısı pompası için moderated mediation optimizasyon modeli kullanılarak dış ortam parametrelerine bağlı matematiksel eşitlikler elde edilmiştir. Kullanılan optimizasyon modeliyle kondenser yoğuşma sıcaklığı üzerinde dış ortam sıcaklığının %39,82, rüzgar yönünün %24,72 ve bağıl nemin %7,65 oranında etkisi olduğu bulunmuştur. Dış ortam sıcaklığı, evaporatör buharlaşma sıcaklığı üzerinde %1,32 oranında olumsuz bir dolaylı etki oluşturmaktadır. Dış ortam sıcaklığı, rüzgar yönü ve evaporatör buharlaşma sıcaklığı arasındaki etkileşim üzerinde bağıl nemin %0,63 oranında etkisi olduğu elde edilmiştir

Keywords

moderated mediation analiz, hava kaynaklı ısı pompası, evaporatör, kondenser, dış ortam sıcaklığı

References

• [1] Canbaz, Ö., Yücel, N. and Albayrak, K., “Experimental Investigation of Unsteady Flow in a Vertical Shaft Axial Flow Pump”, Politeknik Dergisi, 26(2), 1025-1034, (2023).
• [2] International Energy Agency, “Word Outlook 2023 Report”, IEA Publications Typeset in France, 17-355, (2023).
• [3] International Energy Agency, “CO2 Emissions in 2022 Report”, IEA Publications Typeset in France, 1-19, (2023).
• [4] Dönmezçelik O., Koçak E. and Örkcü H. H., “Towards Net Zero Emissions Target: Energy Modelling of the Transport Sector in Türkiye”, Energy, 279, (2023).
• [5] Qu M., Qin R., Tang Y., Fan Y. and Li T., “An Experimental Study on the Improvement of Reverse Cycle Defrosting Performances for a Cascade Air Source Heat Pump Using Thermal Energy Storage Based Defrosting Method”, Procedia Engineering, 205; 818-825, (2017).
• [6] Zou H., Liu Z. and Long E., “An Experimental Study on External Ventilation to the Heating Performance of Household Air Source Heat Pump”, Frontiers in Energy Research, 9; 785461 (2012).
• [7] Sahin E., and Adıgüzel N., “Experimental Analysis of the Effects of Climate Conditions on Heat Pump System Performance” Energy, 243; 123037, (2022).
• [8] Özdemir M. and Onat A., “Optimization of the fan coil cooling system in accordance with the parameters affecting the performance of the air source heat pump using a moderated mediation model”, Thermal Science, Vol. 28, No. 2B, 1561-1576 (2024).
• [9] Eom H., Chung Y., Park M., Hong B. S. and Kim S. M., “Deep learning-based prediction method on performance change of air source heat pump system under frosting conditions”, Energy, 228; 120452 (2021).
• [10] Li Y., Li Z., Fan Y., Zeng C., Cui Y., Zhao X., Li J., Chen, J. and Shen C., “Experimental investigation of a novel two-stage heat recovery heat pump system employing the vapor injection compressor at cold ambience and high water temperature conditions”, Renewable Energy, 250; 687-694, (2023).
• [11] Ndukaife T. A. and Nnanna A. G. A., “Enhancement of Performance and Energy Efficiency of Air Conditioning System Using Evaporatively Cooled Condensers”, Heat Transfer Engineering, 40; 375-387, (2019).
• [12] Xu Z., Hao L. H., Shao S., Xu W., Wang Z., Wang Y., Sun X., Yang Q., Xu C. and Zhao W., “A semi-theoretical model for energy efficiency assessment of air source heat pump systems”, Energy Convers Manage, 228; 113667, (2021).
• [13] Long T., Qiao Z., Wang M., Li Y., Lu J., Li W., Zeng L. and Huang S., “Performance analysis and optimization of a solar-air source heat pump heating system in Tibet, China”, Energy and Buildings, 220; 110084, (2020).
• [14] Milovančević U. and Kosi, F., “Performance analysis of system heat pump - heat recuperator used for air treatment in process industry”, Thermal Science, 20; 1345-1354, (2016).
• [15] Stamatellos G., Zogou O. and Stamatelos A., “Energy Performance Optimization of a House with Grid-Connected Rooftop Pv Installation and Air Source Heat Pump”, Energies, 14; 740, (2021).
• [16] Akan T., “Renewable Energy: Moderated, Moderating or Mediating?”, Applied Energy, vol. 347; 121411, (2023).
• [17] Dec E., Babiarz B. and Sekret R., “Analysis of temperature air humidity and wind conditions for the needs of outdoor thermal comfort”, EDP Sciences, 44; 9 (2018).
• [18] Kocakulak, S., Yılmaz, S. ve Ergün, A., “Yüzey Suyu Kaynaklı Isı Pompası Sisteminin Enerji ve Ekserji Analizi”, Politeknik Dergisi, 26(3), 1049-1058, (2023).
• [19] Sezen, K. “Operation Parameters Variation of Air Source Heat Pump According to the Outdoor Temperature”, Politeknik Dergisi, 26(3), 1179-1184, (2023).
• [20] Amanda K. M., “Selecting a Within- or Between-Subject Design for Mediation: Validity, Causality, and Statistical Power”, Multivariate Behavioral Research, 58; 616-636, (2023).
• [21] www.tr.freemeteo.com/havadurumu/istanbul/hourly-forecast/today/?gid=745044&language=turkish&country=turkey, “Freemeteo”, (Kontrol: 25.02.2023).
• [22] www.mevbis.mgm.gov.tr/mevbis/ui/index.html#/Workspace, “Türkiye Cumhuriyeti Meteoroloji Müdürlüğü Veri Tabanı Sistemi”, (Kontrol: 25.02.2023).
• [23] Suleyman D., “Comparison of Normality Tests in Terms of Sample Sizes under Different Skewness and Kurtosis Coefficients”, International Journal of Assessment Tools in Education, 9, 397-409, (2022).
• [24] Tabachnick, B.G., and Fidell L. S., “Using Multivariate Statistics (seventh ed.)”, Harlow, Essex : Pearson Education, 79-81, (2018).
• [25] Clement M. L. and Garcia B., M., “A Step-By-Step Tutorial for Performing a Moderated Mediation Analysis Using PROCESS”, Tutorials in Quantitative Methods for Psychology, 18; 258-271, (2022).
• [26] Borau S. Akremi A., Gambier L. E., Kidar H. L. and Ranchoux C., “Analysing Moderated Mediation Effects: Marketing Applications”, Recherche et Applications En Marketing, 30; 88-128 (2015).
• [27] Casement M. D., Keenan K. E., Hipwell A. E., Guyer A. E and Forbes E., “Neural reward processing mediates the relationship between insomnia symptoms and depression in adolescence”, Sleep, 39; 439-447, (2016).
• [28] Kim B. J., Jo S. Y. and Jeong J. W., “Energy Performance Enhancement in Air-Source Heat Pump with a Direct Evaporative Cooler-Applied Condenser”, Case Studies in Thermal Engineering, 35; 102137 (2022).
• [29] Malwe P. D., Shaikh J. and Gawali B., S., “Exergy Assessment of a Multistage Multi-Evaporator Vapor Compression Refrigeration System Using Eighteen Refrigerants”, Energy Reports, vol. 8; 153-162, (2022).
• [30] Yang M., Wu X., Zhou W., Liu X., Qiang R. and Huang F., “Experimental Study on Effects of Different Water Flow Rates on Heat Transfer Characteristics of Evaporator”, Journal of Physics, 2418; 1, (2023).
• [31] Meng Z., Cui X., Zhang H., Liu Y., Wang Z. and Zhang F., “Study on Drying Characteristics of Yam Slices under Heat Pump-Electrohydrodynamics Combined Drying”, Case Studies in Thermal Engineering, 41; 102601, (2023).
• [32] Jianhui N., Liang Z. L., Tianshu L., Haichao W. and Shuxue X., “A newly designed air-source heat pump system with liquid subcooling defrosting: Simulation and experiment”, Applied Thermal Engineering, 242, 122472, (2024).