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Experimental study of an air source transcritical CO2 heat pump with indirect dedicated mechanical subcooling for space heating applications

delete2026-07-07
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OA
AI
R
Rufino Esono Biyogo-Obono
F
Fernando Illán Gómez *
F
F.J.S. Velasco
E
Emanuele Sicco
J
José Ramón García Cascales
DOI：10.1016/j.tsep.2026.104824delete
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Abstract

Abstract

En 中文
• Indirect dedicated mechanical subcooling (IDMS) evaluated in a CO2 heat pump. • IDMS improves performance if the base system operates under low efficiency conditions. • COP improves up to 5.7% at temperatures above 45°C, little gain or degradation below. • Gas cooler pressure reductions between 3.9 and 11.4% found at temperatures below 55°C. • Compressor discharge temperature reduction in all conditions studied.
Keywords:
Transcritical heat pump
CO2
Mechanical subcooling
Internal heat exchanger
Energy efficiency
Space heating

Journal

Thermal Science and Engineering Progress cover
Thermal Science and Engineering Progress
IF:
5.4
Papers:
4.4K
Citations:
1.1W

Organization

D
dipartimento politecnico di ingegneria e architettura
Scholars:
4
Papers: 2
Citations: 0
E
etsii
Scholars:
7
Papers: 2
Citations: 0
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