TY  - JOUR
T1  - Exergetic Investigation of a R1234yf Automotive Air Conditioning System with Internal Heat Exchanger
AU  - Direk, Mehmet
AU  - Mert, Mehmet Selçuk
AU  - Yüksel, Fikret
AU  - Keleşoğlu, Alper
PY  - 2018
DA  - May
DO  - 10.5541/ijot.357232
JF  - International Journal of Thermodynamics
PB  - Uluslararası Uygulamalı Termodinamik Derneği İktisadi İşletmesi
WT  - DergiPark
SN  - 1301-9724
SP  - 103
EP  - 109
VL  - 21
IS  - 2
LA  - en
AB  - This study presents the exergeticinvestigation of an automotive air conditioning (AAC) system with therefrigerant R1234yf experimentally. The air-conditioning system is based on theconventional mechanical compression refrigeration cycle. An internal heatexchanger (IHX) has been added to the system in order to provide performanceenhancement. The influence of the IHX investigated at different compressorspeeds and air stream temperatures. Experimental measurements were collected byusing a data-acquisition system, and the results were obtained by performingexergetic analysis. The exergy destruction, exergy efficiency and the totalexergy destruction per cooling capacity were calculated. The analysis resultswere compared with a baseline system which operates with the refrigerant R134a.Furthermore, an empirical correlation was proposed for the determination of thetotal exergy destruction per cooling capacity for various compressor speeds forevaluating the system performance without doing further experiments. As aresult, the exergetic efficiency of the system was improved by introducing IHXto the system. Moreover, it was observed that the temperature rise in the air streamdecreased the exergy efficiency and increased the total exergy destruction percooling capacity.
KW  - Automobile air conditioning; exergy analysis; internal heat exchanger; R1234yf.
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UR  - https://doi.org/10.5541/ijot.357232
L1  - https://dergipark.org.tr/en/download/article-file/480554
ER  -