Measurement and investigation into air source heat pump exergy

Hung-Pin Cho; Ching-Wei Hsu; Ching-Song Jwo; Meng-Ying Tsai; Sih-Li Chen

doi:10.1117/12.904851

15 November 2011 Measurement and investigation into air source heat pump exergy

Hung-Pin Cho, Ching-Wei Hsu, Ching-Song Jwo, Meng-Ying Tsai, Sih-Li Chen

Proceedings Volume 8321, Seventh International Symposium on Precision Engineering Measurements and Instrumentation; 83211Y (2011) https://doi.org/10.1117/12.904851
Event: Seventh International Symposium on Precision Engineering Measurements and Instrumentation, 2011, Yunnan, China

Abstract

This study applies the second law of thermodynamics to analyze the irreversibility of air source heat pump systems. By using both T type thermocouple wires to measure the inlet and outlet temperatures of key components in the system and using pressure transmitters to measure the high and low pressure of the experiment systems, we collect data and use two control volume(CV) models to calculate the generative volume and irreversibility of entropy for each system component. According to the experiment results for both CV models (the CV of the refrigerant section and the CV of the whole control), the heat exchanger is found to have the largest irreversibility. The irreversibility error of the condenser is 4.6% and the irreversibility error of the evaporator is up to 21%. By applying the results of this study it is possible to improve the function of air source heat pump systems through improving the heat exchanger, achieving both cost and energy savings.

Citation Download Citation

Hung-Pin Cho, Ching-Wei Hsu, Ching-Song Jwo, Meng-Ying Tsai, and Sih-Li Chen "Measurement and investigation into air source heat pump exergy", Proc. SPIE 8321, Seventh International Symposium on Precision Engineering Measurements and Instrumentation, 83211Y (15 November 2011); https://doi.org/10.1117/12.904851

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KEYWORDS

Temperature metrology

Thermodynamics

Energy efficiency

Data modeling

Adaptive optics

Control systems

Fluctuations and noise

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