Comparative assessment on irreversible losses in heat pumps using R744/R32/R1234yf and R744/R32/R1234ze(E)

Sho Fukuda; Hideki Kojima; Chieko Kondou; Nobuo Takata; Shigeru Koyama

doi:10.1080/23744731.2016.1206452

Comparative assessment on irreversible losses in heat pumps using R744/R32/R1234yf and R744/R32/R1234ze(E)

Sho Fukuda, Hideki Kojima, Chieko Kondou, Nobuo Takata, Shigeru Koyama

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

Abstract

This article presents an experimental assessment of coefficient of performance and irreversible loss in the heat pump cycle using hydro-fluoro-olefin base ternary mixtures: YF300 (R744/R32/R1234yf; 4/44/52 mass%), YF200 (R744/R32/R1234yf; 5/28/67 mass%), ZE300 (R744/R32/R1234ze(E); 4/43/53 mass%), and ZE200 (R744/R32/R1234ze(E); 9/29/62 mass%). The smaller volumetric capacity of YF200 and ZE200 increases the irreversible loss caused by the pressure drop with increasing heat load. ZE200, which has a temperature glide of approximately 22 K, increases the irreversible loss in the condenser, evaporator, and expansion valve. The experimental results indicate that YF300 and ZE300 could be potential alternatives to R410A and R32.

Original language	English
Pages (from-to)	1118-1127
Number of pages	10
Journal	Science and Technology for the Built Environment
Volume	22
Issue number	8
DOIs	https://doi.org/10.1080/23744731.2016.1206452
Publication status	Published - Nov 16 2016

All Science Journal Classification (ASJC) codes

Environmental Engineering
Building and Construction
Fluid Flow and Transfer Processes

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title = "Comparative assessment on irreversible losses in heat pumps using R744/R32/R1234yf and R744/R32/R1234ze(E)",

abstract = "This article presents an experimental assessment of coefficient of performance and irreversible loss in the heat pump cycle using hydro-fluoro-olefin base ternary mixtures: YF300 (R744/R32/R1234yf; 4/44/52 mass%), YF200 (R744/R32/R1234yf; 5/28/67 mass%), ZE300 (R744/R32/R1234ze(E); 4/43/53 mass%), and ZE200 (R744/R32/R1234ze(E); 9/29/62 mass%). The smaller volumetric capacity of YF200 and ZE200 increases the irreversible loss caused by the pressure drop with increasing heat load. ZE200, which has a temperature glide of approximately 22 K, increases the irreversible loss in the condenser, evaporator, and expansion valve. The experimental results indicate that YF300 and ZE300 could be potential alternatives to R410A and R32.",

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AU - Takata, Nobuo

AU - Koyama, Shigeru

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