Experimental Investigation of the Effects of Temperature and Relative Humidity on Performance of a Heat Pump

Authors

  • Erol Şahin
  • Nesrin Adıgüzel Ataturk University

Keywords:

Relative Humidity, Heat Pump, Thermodynamic Efficiency , Exergy Analysis , Exergy Efficiency

Abstract

This study was aimed at investigating the effects of temperature and relative humidity of atmospheric air on the exergy efficiency and thermodynamic efficiency of a heat pump. For this purpose, an experimental rig was set up and experiments were carried out. The results obtained were put through exergy calculations. Two heat pumps, heaters, and steam engines were employed in the experimental rig. The first heat pump was used for drying and cooling the air. Then, heat and water vapor were imparted to the air in the channel in order to get it to have desired humidity and temperature. The effects of this conditioned air on the second heat pump were determined by temperature, humidity, pressure, and flow rate measurements. Exergy efficiencies and thermodynamic efficiency ratios of the system and its components were determined with the measured values. The COPCM value of the system was observed to decrease with the increase of the relative humidity in the air. The highest COPCM value was at lowest relative humidity values of 30% and 40%. It was graphically shown that the COPCM value remained at low levels when the relative humidity rose to 70% - 80%.

 

Author Biography

  • Erol Şahin

     

     

References

Cengel AY, Boles MA. Thermodynamics: An Egineering Aproach. New York: Mc Graw- Hill (2019). 987 p.

Kılıç H. Güneş enerji destekli ısı pompasının tasarımı, imalatı ve performans deneyleri. Gazi Üniversitesi: Yüksek Lisans Tezi (2006).

Mirza M. Isı pompalı kurutucunun ısıl tasarımı, Yüksek Lisans Tezi, Ege Üniversitesi (2006).

Fatouh M, Metwally MN, Helali AB. Herbs drying using a heat pump dryer, Energy Conversion and Management (2006).

Güngör A, Özbalta N. Kurutmanın Temelleri ve Endüstriyel Kurutucular Kurs Notları, IX: Ulusal Tesisat Mühendisliği Kongresi (2009).

Ceylan İ, Aktaş M, Doğan H. Determination of the drying time of timber in a heat pump dryer. Gazi University Faculty of Engineering and Architecture Fac. Journal (2007) 78:97–103.

Kara O. Desing of air-conditioning system with dehumidification. Master Thesis. Çukurova Universty. Adana (2009).

Kılıç E. Soğutma, havalandırma, nem alma sistemlerinin incelenmesi. Yüksek lisans tez, Yıldız Teknik Ünivesitesi, Fen Bilimleri Enstitüsü (2011).

Altın M, Aktakka S, Günerhan H. Farklı iklim bölgelerine ait ısıtma-soğutma tasarım sıcaklıklarının dikkate alınarak bir ısı kazanım sisteminin tasarımı. In: 11. Ulusal Tesisat Mühendisliği Kongresi, 17/20 Nisan 2013 Bildiri Kitabı (2013). p. 1055–1070.

Günay C. Nemli havadaki su buharının sayısal olarak incelenmesi.Yüksek lisans tezi, İstanbul Teknik Üniversitesi. Fen Bilimleri Enstitüsü (2014).

Alkan A, Kolip A, Hosoz M. Experimental energy and exergy performance of an automotive heat pump using R1234yf. Journal of Thermal Analysis and Calorimetry (2020).

Zhang Q, Liu X, Zhang T, Y. Performance optimization of a heat pump driven liquid desiccant dehumidification system using exergy analysis. Energy (2020) 204:117891.

Chen J, Zhang Z, Zhang G, Wang D. Energy, exergy, economic and environmental analysis of a novel direct-expansion solar-assisted flash tank vapor injection heat pump for water heater. Energy Conversion and Managament (2022) 254:115239.

Al Sayyab A, Esbri J, Badiloni A. Energy, exergy, and environmental (3E) analysis of a compound ejector-heat pump with low GWP refrigerants for simultaneous data center cooling and district heating. International Journal of Refrigeration (2022) 133:672.

Şahin E. İklim Şartlarının Isı Pompası Sistemi Performansına Etkilerinin Teorik ve Deneysel Analizi, Doktora Tezi: Atatürk Üniversitesi, Fen Bilimleri Enstitüsü (2021).

Sahin E, Adiguzel N. Experimental analysis of the effects of climate conditions on heat pump system performance. Energy (2022) 243:123037.

Çakır U. Isı pompalarının kondenser ve evaporatörde kullanılan akışkana göre ekserjetik olarak karşılaştırılması, Doktora Tezi: Atatürk Üniversitesi, Fen Bilimleri Enstitüsü (2011).

Dincer İ, M.A R. Exergy as a driver for achieving sustainbility. Int. J. Green Energy (2004) 1(1):1–9.

Downloads

Published

2023-07-15

How to Cite

Experimental Investigation of the Effects of Temperature and Relative Humidity on Performance of a Heat Pump. (2023). International Journal of Innovative Research and Reviews, 7(1), 1-11. https://www.injirr.com/article/view/119