Abstract
Due to increasing energy demand, exergy analysis becomes necessary to use energy-efficient systems by minimizing losses. India is one of the largest markets of air source heat pump system. Taking this criterion into consideration, this study aims to investigate the performance of air source heat pump system. To identify the losses, exergy destruction in each component was determined. It was noticeable that exergy destruction of compressor was highest (40.76%) because of its non-isentropic compression and friction losses, followed by the expansion valve (36.03%), evaporator (15.72%) and condenser (7.5%). Effect of condenser temperature on second law efficiency varied linearly with decreasing nature. Effect of evaporator temperature on overall efficiency was studied. Coefficient of performance of the actual system (4.28) deviated from the theoretical COP (5.23) because of pressure loss in condenser and evaporator.
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- h :
-
Specific enthalpy (kJ/kg)
- \( \dot{m} \) :
-
Mass flow rate (kg/s)
- \( \dot{Q} \) :
-
Rate of heat transfer (kW)
- T :
-
Temperature (K)
- s :
-
Specific entropy (kJ/kg k)
- \( \dot{W} \) :
-
Rate of work (kW)
- \( \dot{X} \) :
-
Exergy destruction rate (kW)
- \( \eta \) :
-
Exergy efficiency
- c:
-
Compressor
- o:
-
Ambient temperature
- con:
-
Condenser
- evap:
-
Evaporator
- Exp:
-
Expansion device
References
Gang, P., Guiqiang, L., Jie, J.: Comparative study of air-source heat pump water heater systems using the instantaneous heating and cyclic heating modes. Appl. Therm. Eng. 31(2–3), 342–347 (2011)
Mi, B., Luo, Q., Chen, G.: Exergy analysis of air source heat pump water heater. In: 4th International Conference on Sensors, Measurement and Intelligent Material (2015)
Zhang, J., Wang, R.Z., Wu, J.Y.: System optimization and experimental research on air source heat pump water heater. Appl. Therm. Eng. 27(5–6), 1029–1035 (2007)
Ding, Y., Chai, Q., Ma, G., Jiang, Y.: Experimental study of an improved air source heat pump. Energy Convers. Manag. 45(15–16), 2393–2403 (2004)
Fei, L., Pingfang, H.: Energy and exergy analysis of a ground water heat pump system. Physics Procedia 24, 169–175 (2012)
Cengal, Y., Boles, M.: Thermodynamics An Engineering Approach, 8th edn
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Trapasia, N., Patel, K., Patel, R. (2020). Exergy Analysis—A Useful Concept of Sustainability for Air Source Heat Pump System. In: Deb, D., Dixit, A., Chandra, L. (eds) Renewable Energy and Climate Change. Smart Innovation, Systems and Technologies, vol 161. Springer, Singapore. https://doi.org/10.1007/978-981-32-9578-0_22
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DOI: https://doi.org/10.1007/978-981-32-9578-0_22
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Publisher Name: Springer, Singapore
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Online ISBN: 978-981-32-9578-0
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