TY - JOUR
T1 - Second law analysis of an automotive air conditioning system using HFO-1234yf, an environmentally friendly refrigerant
AU - Golzari, Soudabeh
AU - Kasaeian, Alibakhsh
AU - Daviran, Samaneh
AU - Mahian, Omid
AU - Wongwises, Somchai
AU - Sahin, Ahmet Z.
N1 - Publisher Copyright:
© 2016 Elsevier Ltd and IIR
PY - 2017/1/1
Y1 - 2017/1/1
N2 - In this paper, a comparative study of the second law of thermodynamics is presented to determine the possibility of using HFO-1234yf, an environmentally friendly refrigerant, as a drop-in replacement of HFC-134a in automotive air conditioning system. For the thermodynamic analysis, a computer program is written to simulate the operating conditions of automobile air conditioning system. The thermodynamic properties of the refrigerants are extracted from the REFPROP 8.0 software. For calculating the coefficient of performance (COP), exergy destruction, exergy efficiency and entropy generation, computational models are used to evaluate the effects of different parameters on their changes. It is found that using HFO-1234yf as the air conditioning refrigerant leads to higher exergy efficiency compared to HFC-134a. Also, maximum entropy generation and exergy destruction occur in the compressor. The exergy destruction and entropy generation of the cycle components are less in the case of using HFO-1234yf refrigerant instead of HFC-134a.
AB - In this paper, a comparative study of the second law of thermodynamics is presented to determine the possibility of using HFO-1234yf, an environmentally friendly refrigerant, as a drop-in replacement of HFC-134a in automotive air conditioning system. For the thermodynamic analysis, a computer program is written to simulate the operating conditions of automobile air conditioning system. The thermodynamic properties of the refrigerants are extracted from the REFPROP 8.0 software. For calculating the coefficient of performance (COP), exergy destruction, exergy efficiency and entropy generation, computational models are used to evaluate the effects of different parameters on their changes. It is found that using HFO-1234yf as the air conditioning refrigerant leads to higher exergy efficiency compared to HFC-134a. Also, maximum entropy generation and exergy destruction occur in the compressor. The exergy destruction and entropy generation of the cycle components are less in the case of using HFO-1234yf refrigerant instead of HFC-134a.
KW - Entropy generation
KW - Exergy
KW - HFC-134a refrigerant
KW - HFO-1234yf refrigerant
UR - https://www.scopus.com/pages/publications/84992378767
U2 - 10.1016/j.ijrefrig.2016.09.009
DO - 10.1016/j.ijrefrig.2016.09.009
M3 - Article
AN - SCOPUS:84992378767
SN - 0140-7007
VL - 73
SP - 134
EP - 143
JO - International Journal of Refrigeration
JF - International Journal of Refrigeration
ER -