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Performance analysis of low GWP refrigerants in a novel direct expansion solar assisted ejector heat pump system.

Number: 0018

Author(s) : ZOU L., LIU Y., YU J.

Summary

A novel direct expansion solar assisted ejectorexpansion enhanced heat pump cycle (DX-SEEHP) for heat pump drying applications is proposed. A thermodynamic analysis model of the cycle is established and the performance of DX-SEEHP and conventional ejector expansion heat pump system (EEHP) is comprehensively analysed. Compared to the EHP, the research shows that the DX-SEHP with R134a refrigerant has a 23.64%-39.82% increase in heating performance COPh and 32.79%-33.96% increase in volumetric heating capacity for the given condensing temperature range (Tc from 60 ℃ to 80 ℃ ). Finally, the cycle performance of five low-GWP (GWP<1000) alternative refrigerants (R1234yf, R1234ze(E) and R1233zd(E)) are presented and compared with
R134a. Among them, R1234yf shows excellent thermal performance with the highest COPh 5.40 and high Qcv 4691.11 kJ·m-3, being the best alternative refrigerant to R134a.

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Pages: 13 p.

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Details

  • Original title: Performance analysis of low GWP refrigerants in a novel direct expansion solar assisted ejector heat pump system.
  • Record ID : 30031027
  • Languages: English
  • Subject: Technology, HFCs alternatives
  • Source: 3rd IIR conference on HFO Refrigerants and low GWP Blends. Shanghai, China.
  • Publication date: 2023/04/05
  • DOI: http://dx.doi.org/10.18462/iir.HFO2023.0018

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