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Featured researches published by Sho Fukuda.


Science and Technology for the Built Environment | 2016

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

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.


International Journal of Refrigeration-revue Internationale Du Froid | 2014

Low GWP refrigerants R1234ze(E) and R1234ze(Z) for high temperature heat pumps

Sho Fukuda; Chieko Kondou; Nobuo Takata; Shigeru Koyama


Archive | 2010

Drop-in Experiments on Heat Pump Cycle Using HFO-1234ze(E) and Its Mixtures with HFC-32

Shigeru Koyama; Nobuo Takata; Sho Fukuda


24th IIR International Congress of Refrigeration, ICR 2015 | 2015

Comparative assessment of heat pump cycle operated with R32/R1234ze(E) and R32/R1234yf mixtures

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


Archive | 2012

The Circulation Composition Characteristic of the Zeotropic Mixture R1234ze(E)/R32 in a Heat Pump Cycle

Sho Fukuda; Nobuo Takata; Shigeru Koyama


7th Asian Conference on Refrigeration and Air Conditioning, ACRA 2014 | 2014

Cycle performance of low GWP refrigerant mixtures R-32/1234ze(E) and R-744/32/1234ze(E)

Sho Fukuda; Chieko Kondou; Nobuo Takata; Shigeru Koyama


Archive | 2016

Experimental Assessment on Performance of a Heat Pump Cycle Using R32/R1234yf and R744/R32/R1234yf

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


8th Asian Conference on Refrigeration and Air-Conditioning, ACRA 2016 | 2016

Comparative study on heat pump cycle using R32/R1234yf and R744/R32/R1234yf mixtures

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


24th IIR International Congress of Refrigeration, ICR 2015 | 2015

Condensation of R1234ze(Z) inside a vertical plate-fin heat exchanger

Sho Fukuda; Hongcheng Zhang; Nobuo Takata; Tatsuya Matsumoto; Shigeru Koyama


The Proceedings of the Thermal Engineering Conference | 2012

A113 The performance evaluation of high temperature heat pump cycle using HFO refrigerants

Sho Fukuda; Shotaro Yamamoto; Chieko Kondou; Nobup Takada; Shigeru Koyama

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