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Article

Performance Study of Direct Integration of Phase Change Material into an Innovative Evaporator of a Simple Vapour Compression System

GREiA Research Group, Universitat de Lleida, 25001 Lleida, Spain
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Author to whom correspondence should be addressed.
Appl. Sci. 2020, 10(13), 4649; https://doi.org/10.3390/app10134649
Received: 30 May 2020 / Revised: 30 June 2020 / Accepted: 2 July 2020 / Published: 5 July 2020
(This article belongs to the Special Issue Clean Energy and Fuel Storage 2020)
This paper experimentally investigates the direct integration of 3.15 kg of phase change materials (PCM) into a standard vapour compression system of variable cooling capacity, through an innovative lab-scale refrigerant-PCM-water heat exchanger (RPW-HEX), replacing the conventional evaporator. Its performance was studied in three operating modes: charging, discharging, and direct heat transfer between the three fluids. In the charging mode, a maximum energy of 300 kJ can be stored in the PCM for the cooling capacity at 30% of the maximum value. By doubling the cooling power, the duration of charging is reduced by 50%, while the energy stored is only reduced by 13%. In the discharging mode, the process duration is reduced from 25 min to 9 min by increasing the heat transfer fluid (HTF) flow rate from 50 L·h−1 to 150 L·h−1. In the direct heat transfer mode, the energy stored in the PCM depends on both the cooling power and the HTF flow rate, and can vary from 220 kJ for a cooling power at 30% and HTF flow rate of 50 L·h−1 to 4 kJ for a compressor power at 15% and a HTF flow rate of 150 L·h−1. The novel heat exchanger is a feasible solution to implement latent energy storage in vapour compression systems resulting to a compact and less complex system. View Full-Text
Keywords: heat exchangers; thermal energy storage (TES); phase change materials (PCMs); refrigeration cycle; cooling applications; experimental study heat exchangers; thermal energy storage (TES); phase change materials (PCMs); refrigeration cycle; cooling applications; experimental study
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MDPI and ACS Style

Mselle, B.D.; Vérez, D.; Zsembinszki, G.; Borri, E.; Cabeza, L.F. Performance Study of Direct Integration of Phase Change Material into an Innovative Evaporator of a Simple Vapour Compression System. Appl. Sci. 2020, 10, 4649. https://doi.org/10.3390/app10134649

AMA Style

Mselle BD, Vérez D, Zsembinszki G, Borri E, Cabeza LF. Performance Study of Direct Integration of Phase Change Material into an Innovative Evaporator of a Simple Vapour Compression System. Applied Sciences. 2020; 10(13):4649. https://doi.org/10.3390/app10134649

Chicago/Turabian Style

Mselle, Boniface D.; Vérez, David; Zsembinszki, Gabriel; Borri, Emiliano; Cabeza, Luisa F. 2020. "Performance Study of Direct Integration of Phase Change Material into an Innovative Evaporator of a Simple Vapour Compression System" Appl. Sci. 10, no. 13: 4649. https://doi.org/10.3390/app10134649

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