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Influence of air temperature and flow conditions on the system performance in the use of R152a in automobile heat pump systems

Year 2019, , 106 - 115, 24.03.2019
https://doi.org/10.18185/erzifbed.427756

Abstract

In this study, the use of R152a in an automobile heat pump system was experimentally investigated under different air temperatures and air flow rates. System performance was determined by changing the air flow rates and temperatures entering the indoor and outdoor units. Operating conditions of R134a and R152a, which used in air conditioning and heat pump systems, are compared. It was determined that the heating capacity of the R152a was higher than that of R134a.  It was also seen that the heating capacity of R152a increased with the decreased of the air flow rates at the indoor unit.  Besides, it was observed that the effect of air flow conditions on the performance parameters was higher than environmental conditions. Finally, it was determined that R152a can be used as an alternative refrigerant in automotive air conditioning systems when the necessary improvements made.

References

  • Ciconkov R., (2018), “Refrigerants: There is still no vision for sustainable solutions”, International Journal of Refrigeration, 86, 441-448.
  • European Parliament and of the Council, (2014) “Regulation 2014/517/EU”, Official Journal of the European Union: Fluorinated Greenhouse Gases, Strasbourg, EU.
  • Ghodbane, M., (1999). “An Investigation of R152a and Hydrocarbon Refrigerants in Mobile Air Conditioning”, SAE Technical Papers, Paper Code: 1999-01-0874.
  • Hosoz, M., Direk, M., Yigit, K. S., Canakci, M., Turkcan, A., Alptekin, E., Sanli, A., (2015), "Performance Evaluation of an R134a Automotive Heat Pump System for Various Heat Sources in Comparison with Baseline Heating System", Applied Thermal Engineering, 78, 419-427.
  • Lee H., Lee M., (2016). “Steady state and start-up performance characteristics of air source heat pump for cabin heating in an electric passenger vehicle”, International journal of refrigeration, 69, 232-242.
  • Lemmon, E.W., Huber, M.L., McLinden, M.O. (2014). “REFPROP, NIST Standard Reference Database 23, v.9.1.National Institute of Standards. Gaithersburg.
  • Meng, Z., Zhang, H., Qiu, J., Lei, M. (2016). “Theoretical analysis of R1234ze (E), R152a, and R1234ze (E)/R152a mixtures as replacements of R134a in vapor compression system”, Advances in Mechanical Engineering, 8(11), 1-10.
  • Meng Z., Zhang H., Lei M., Qin Y., Qiu J., (2018), “Performance of low GWP R1234yf/R134a mixture asa replacement for R134a in automotive air conditioning systems”, International Journal of Heat and Mass Transfer, 116, 362-370.
  • Scherer, L.P., Ghodbane, M., Baker, J.A., Kadle, P.S. (2003). “On-Vehicle Performance Comparison of an R-152a and R-134a Heat Pump System”, SAE Technical Papers, Paper Code: 2003-01-0733.
  • Wanga Z., Wei M., Guo C., Zhao M., (2017). “Enhance the heating performance of an electric vehicle AC/HP system under low temperature”, Energy Procedia 105, 2384-2389.
  • Wang D., Yu B., Hu J., Chen L., Shi J., Chen J., (2018). “Heating performance characteristics of CO2 heat pump system for electrical vehicle in a cold climate”, International Journal of Refrigeration, 85, 27-41.

Otomobil Isı Pompası Sistemlerinde R152a’nın Kullanımında Çevre ve Akış Şartlarının Sistem Performansı Üzerine Etkisi

Year 2019, , 106 - 115, 24.03.2019
https://doi.org/10.18185/erzifbed.427756

Abstract

Bu çalışmada, bir otomobil ısı pompası sisteminde R152a soğutucu akışkanının kullanımı farklı hava sıcaklık ve hızlarında test edilmiştir. Deneylerde iç ve dış üniteye (yoğuşturucu ve buharlaştırıcı) giren hava akımı hız ve sıcaklıkları değiştirilerek, sistemin ısıtma durumundaki performansı belirlenmiştir. Klima ve ısı pompası sistemlerinde yaygın olarak kullanılan R134a soğutucu akışkanı çalışma şartları ile R152a’nın çalışma şartları karşılaştırılmıştır. Sonuç olarak, R152a soğutucu akışkanı ile çalıştırılan sistemin ısıtma kapasitesinin R134a’ya göre daha yüksek olduğu belirlenmiştir. İç ünite girişindeki hava debisinin artmasıyla ile R152a’nın ısıtma kapasitesi değerlerinin azaldığı görülmüştür. Ayrıca, hava akış şartlarının performansa olan etkisinin sıcaklık şartlarına göre daha yüksek olduğu belirlenmiştir. R152a’nın gerekli iyileştirmeler yapıldığında otomobil iklimlendirme sistemlerinde uygun alternatif bir soğutucu akışkan olabileceği belirlenmiştir.

References

  • Ciconkov R., (2018), “Refrigerants: There is still no vision for sustainable solutions”, International Journal of Refrigeration, 86, 441-448.
  • European Parliament and of the Council, (2014) “Regulation 2014/517/EU”, Official Journal of the European Union: Fluorinated Greenhouse Gases, Strasbourg, EU.
  • Ghodbane, M., (1999). “An Investigation of R152a and Hydrocarbon Refrigerants in Mobile Air Conditioning”, SAE Technical Papers, Paper Code: 1999-01-0874.
  • Hosoz, M., Direk, M., Yigit, K. S., Canakci, M., Turkcan, A., Alptekin, E., Sanli, A., (2015), "Performance Evaluation of an R134a Automotive Heat Pump System for Various Heat Sources in Comparison with Baseline Heating System", Applied Thermal Engineering, 78, 419-427.
  • Lee H., Lee M., (2016). “Steady state and start-up performance characteristics of air source heat pump for cabin heating in an electric passenger vehicle”, International journal of refrigeration, 69, 232-242.
  • Lemmon, E.W., Huber, M.L., McLinden, M.O. (2014). “REFPROP, NIST Standard Reference Database 23, v.9.1.National Institute of Standards. Gaithersburg.
  • Meng, Z., Zhang, H., Qiu, J., Lei, M. (2016). “Theoretical analysis of R1234ze (E), R152a, and R1234ze (E)/R152a mixtures as replacements of R134a in vapor compression system”, Advances in Mechanical Engineering, 8(11), 1-10.
  • Meng Z., Zhang H., Lei M., Qin Y., Qiu J., (2018), “Performance of low GWP R1234yf/R134a mixture asa replacement for R134a in automotive air conditioning systems”, International Journal of Heat and Mass Transfer, 116, 362-370.
  • Scherer, L.P., Ghodbane, M., Baker, J.A., Kadle, P.S. (2003). “On-Vehicle Performance Comparison of an R-152a and R-134a Heat Pump System”, SAE Technical Papers, Paper Code: 2003-01-0733.
  • Wanga Z., Wei M., Guo C., Zhao M., (2017). “Enhance the heating performance of an electric vehicle AC/HP system under low temperature”, Energy Procedia 105, 2384-2389.
  • Wang D., Yu B., Hu J., Chen L., Shi J., Chen J., (2018). “Heating performance characteristics of CO2 heat pump system for electrical vehicle in a cold climate”, International Journal of Refrigeration, 85, 27-41.
There are 11 citations in total.

Details

Primary Language Turkish
Subjects Engineering
Journal Section Makaleler
Authors

Mehmet Direk

Fikret Yüksel

Publication Date March 24, 2019
Published in Issue Year 2019

Cite

APA Direk, M., & Yüksel, F. (2019). Otomobil Isı Pompası Sistemlerinde R152a’nın Kullanımında Çevre ve Akış Şartlarının Sistem Performansı Üzerine Etkisi. Erzincan University Journal of Science and Technology, 12(1), 106-115. https://doi.org/10.18185/erzifbed.427756