Open AccessNumerical study on the influence of internal heat exchanger in transcritical CO2 heat pumps under optimal pressure conditions
Author(s) -
Fernando Illán-Gómez,
J.R. García-Cascales,
F.J.S. Velasco,
V.F. Sena-Cuevas,
R.A. Otón-Martínez
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2116/1/012098
Subject(s) - transcritical cycle , internal heating , heat exchanger , thermodynamics , mechanics , materials science , heat pump , evaporation , inlet , mechanical engineering , engineering , physics
This paper presents a numerical study on the influence of internal heat exchanger (IHX) exchanging surface in the performance of a transcritical CO 2 heat pump water heater at different operating conditions. Five different IHX geometries and four different evaporation temperatures have been studied with water temperature ranging from 10 °C to 60 °C at the gas cooler inlet. The results show a strong influence of IHX characteristics on system’s performance.