Open AccessComparative Analysis of Heat Pump System with IHX Using R1234yf and R134a
Author(s) -
Róbert Sánta
Publication year - 2021
Publication title -
periodica polytechnica. mechanical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.259
H-Index - 16
eISSN - 1587-379X
pISSN - 0324-6051
DOI - 10.3311/ppme.18390
Subject(s) - heat pump , refrigerant , gas compressor , coefficient of performance , heat exchanger , air source heat pumps , internal heating , work (physics) , thermodynamics , nuclear engineering , hybrid heat , mechanics , environmental science , mechanical engineering , engineering , materials science , physics
This research presents an energy performance analysis of the heat pump system with internal heat exchanger (IHX). The mathematical model of the heat pump outlined in this paper has been created by the author, it is steady-state with lumped parameters. The experimental validation of the model has been carried out using R1234yf and R134a as refrigerant. The aim of this work is to compare the energy performance in a wide range of operating conditions of a monitored heat pump system using both refrigerants. Finally, the heating capacity for R1234yf was lower from 0.63 % to 7.54 % compared with R134a, while the compressor power was similar from 0.12 % to 3.51 %. The COP values of R1234yf were lower than those obtained of R134a, ranging from 1.39 % to 4.22 %.