Investigations of the performance of a heat pump with internal heat exchanger

Robert S.

Journal of Thermal Analysis and Calorimetry, vol.147, no.15, pp.8499-8508, 2022 (SCI-Expanded, Scopus) identifier

  • Nəşrin Növü: Article / Article
  • Cild: 147 Say: 15
  • Nəşr tarixi: 2022
  • Doi nömrəsi: 10.1007/s10973-021-11130-5
  • jurnalın adı: Journal of Thermal Analysis and Calorimetry
  • Jurnalın baxıldığı indekslər: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Səhifə sayı: pp.8499-8508
  • Açar sözlər: COP, Efficiency, Heat pump, IHX
  • Açıq Arxiv Kolleksiyası: Məqalə
  • Adres: Yox

Qısa məlumat

The aim of this study was to develop a mathematical model with lumped parameters to investigate the energetic parameters of the heat pump with an internal heat exchanger (IHX). The developed mathematical model is validated with 25 tests using R134a as a working fluid. The results show that the maximum prediction error between the modeled and experimental results for the COP is 7.06%. The main objective of this paper was to investigate the COP value of a heat pump as a function of the efficiency of the internal heat exchanger and present a new equation to calculate the COP value. When the efficiency of IHX was increased from 0.65 to 0.95, the COP value increased by 5.41% under the conditions of minimum evaporation − 20 °C and maximum condensation temperature 90 °C.