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Journal articles

Experimental Validation of On-Field Measurement Method for a Heat Pump System with Internal Heat Exchanger

Abstract : Determining the on-field heating capacity and coefficient of performance (COP) of residential air-to-air heat pumps (HPs) is problematic, given that measuring accurately the enthalpy and, specifically, the mass flow rate of air is challenging. This paper validates a promising on-field performance measurement method for HPs with an internal heat exchanger (IHX) as vapor injection system using experimental data obtained from air-to-water heat pump prototype in several operating conditions. The method is based on refrigerant fluid measurements and component energy/mass balances. Nonintrusive sensors, such as surface temperature sensors, are used to estimate pressure and refrigerant mass flow rate in different types of heat pump systems, including air-to-air. Obtained results compared with intrusively measured reference values in steady-state conditions are in good agreement, suggesting that a comprehensive performance analysis can be conducted in already-installed high efficiency residential IHX air-to-water HPs, as well as internal heat exchanger air-to-air HPs.
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Submitted on : Wednesday, February 8, 2017 - 2:13:19 PM
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Maria Goossens, Philippe Riviere, Cedric Teuillieres, Cong Toan Tran, Odile Cauret, et al.. Experimental Validation of On-Field Measurement Method for a Heat Pump System with Internal Heat Exchanger. International Journal of Air-Conditioning and Refrigeration, 2016, Volume 24, Issue 02, ⟨10.1142/S2010132516500115⟩. ⟨hal-01461745⟩



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