Abstract
In this paper, an analysis of exergy of an air conditioner having condenser of air-cooled type is presented. The prime objectives of this paper are to analyse all the four main components (condenser, expansion valve, compressor and evaporator) of vapour compression refrigeration system individually and then to quantify and identify the sites having the largest exergy losses. The exergy efficiency is also calculated at different ambient conditions, i.e. (30, 32, 34, 36 and 38 °C) with different volume flow rates of air, i.e. (0.08, 0.1, 0.12, 0.14 and 0.16 m3s).The results showed that exergy loss is highest in the compressor. The order of exergy loss is (Exergy Destruction)compressor > (Exergy Destruction)condenser > (ExergyDestruction)evaporator > (ExergyDestruction)expansionvalve. In addition, the exergy efficiency of the system varies from 31.10 to 34.52%.
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Abbreviations
- Wc:
-
Compressor work
- Qc:
-
Refrigerating effect
- Mr:
-
Refrigerant mass flow rate
- h1:
-
Refrigerantenthalpy at exit of evaporator or inlet of compressor in kJ/kg
- h2:
-
Refrigerant enthalpy at exit of compressor or inlet of condenser in kJ/kg
- h3:
-
Refrigerant enthalpy at exit of the condenser or inlet of expansion valve in kJ/kg
- h4:
-
Refrigerantenthalpy at exit of expansion valve or entry of evaporator in kJ/kg
- S1:
-
Refrigerantentropy at the exit of evaporator or inlet of compressor in kJ/kg-K
- S2:
-
Refrigerantentropy at exit of compressor or inlet of condenser in kJ/kg-K
- S3:
-
Refrigerant entropy at exit of condenser or inlet of expansion valve in kJ/kg-K
- S4:
-
Refrigerantentropy at exit of expansion valve or entry of evaporator in kJ/kg-K
- Te:
-
Evaporator temperature
- Tc:
-
Condenser temperature
- To:
-
Ambient temperature
- ηexergy:
-
Exergy efficiency
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Hussain, T., Hafiz, A., Akramuddin (2020). Exergy Analysis of an Air Conditioning System Using Air-Cooled Condenser at Different Ambient Conditions with Different Volume Flow Rates of Air. In: Yadav, S., Singh, D., Arora, P., Kumar, H. (eds) Proceedings of International Conference in Mechanical and Energy Technology. Smart Innovation, Systems and Technologies, vol 174. Springer, Singapore. https://doi.org/10.1007/978-981-15-2647-3_55
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DOI: https://doi.org/10.1007/978-981-15-2647-3_55
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