Experimental investigation of flow boiling heat transfer and pressure drops characteristic of R1234ze(E), R600a, and a mixture of R1234ze(E)/R32 in a horizontal smooth tube

Experimental investigation of flow boiling heat transfer and pressure drops characteristic of R1234ze(E), R600a, and a mixture of R1234ze(E)/R32 in a horizontal smooth tube

The saturated flow boiling heat transfer coefficients and frictional pressure drops characteristics of R1234ze(E), R600a, and L-41b (R1234ze(E)/R32 (27/73 mass %)) inside an 8 mm inner diameter horizontal tube were investigated. The experiment was carried out at the saturation temperature of 20°C wi...

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Main Authors: Jinyou Qiu, Hua Zhang, Xiaoming Yu, Yingxia Qi, Jiangfeng Lou, Xi Wang
Format: Article
Language:English
Published: SAGE Publishing 2015-09-01
Series:Advances in Mechanical Engineering
Online Access:https://doi.org/10.1177/1687814015606311
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spelling doaj-275ea467813d4d89b7a7bdf3d34263102020-11-25T02:48:48ZengSAGE PublishingAdvances in Mechanical Engineering1687-81402015-09-01710.1177/168781401560631110.1177_1687814015606311Experimental investigation of flow boiling heat transfer and pressure drops characteristic of R1234ze(E), R600a, and a mixture of R1234ze(E)/R32 in a horizontal smooth tubeJinyou Qiu0Hua Zhang1Xiaoming Yu2Yingxia Qi3Jiangfeng Lou4Xi Wang5School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai, ChinaSchool of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai, ChinaSchool of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai, ChinaSchool of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai, ChinaSchool of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai, ChinaHaier Group Technology and Development Center, Qingdao, ChinaThe saturated flow boiling heat transfer coefficients and frictional pressure drops characteristics of R1234ze(E), R600a, and L-41b (R1234ze(E)/R32 (27/73 mass %)) inside an 8 mm inner diameter horizontal tube were investigated. The experiment was carried out at the saturation temperature of 20°C with heat flux ranging from 5.0 to 10.0 kW·m −2 and mass flux ranging from 200 to 400 kg·m −2 ·s −1 . The influence of mass flux, heat flux, and quality on the heat transfer coefficients and frictional pressure drops were examined and discussed. The results show that the local heat transfer coefficients of R1234ze(E) are averagely 33% and 18% lower than those of R600a and L-41b, respectively. The frictional pressure drops of R1234ze(E) are 21% lower than those of R600a but 6% greater than those of L-41b. Meanwhile, the experimental data of local heat transfer coefficients and frictional pressure drops are compared with some well-known correlations available in literatures.https://doi.org/10.1177/1687814015606311
collection DOAJ
language English
format Article
sources DOAJ
author Jinyou Qiu
Hua Zhang
Xiaoming Yu
Yingxia Qi
Jiangfeng Lou
Xi Wang
spellingShingle Jinyou Qiu
Hua Zhang
Xiaoming Yu
Yingxia Qi
Jiangfeng Lou
Xi Wang
Experimental investigation of flow boiling heat transfer and pressure drops characteristic of R1234ze(E), R600a, and a mixture of R1234ze(E)/R32 in a horizontal smooth tube
Advances in Mechanical Engineering
author_facet Jinyou Qiu
Hua Zhang
Xiaoming Yu
Yingxia Qi
Jiangfeng Lou
Xi Wang
author_sort Jinyou Qiu
title Experimental investigation of flow boiling heat transfer and pressure drops characteristic of R1234ze(E), R600a, and a mixture of R1234ze(E)/R32 in a horizontal smooth tube
title_short Experimental investigation of flow boiling heat transfer and pressure drops characteristic of R1234ze(E), R600a, and a mixture of R1234ze(E)/R32 in a horizontal smooth tube
title_full Experimental investigation of flow boiling heat transfer and pressure drops characteristic of R1234ze(E), R600a, and a mixture of R1234ze(E)/R32 in a horizontal smooth tube
title_fullStr Experimental investigation of flow boiling heat transfer and pressure drops characteristic of R1234ze(E), R600a, and a mixture of R1234ze(E)/R32 in a horizontal smooth tube
title_full_unstemmed Experimental investigation of flow boiling heat transfer and pressure drops characteristic of R1234ze(E), R600a, and a mixture of R1234ze(E)/R32 in a horizontal smooth tube
title_sort experimental investigation of flow boiling heat transfer and pressure drops characteristic of r1234ze(e), r600a, and a mixture of r1234ze(e)/r32 in a horizontal smooth tube
publisher SAGE Publishing
series Advances in Mechanical Engineering
issn 1687-8140
publishDate 2015-09-01
description The saturated flow boiling heat transfer coefficients and frictional pressure drops characteristics of R1234ze(E), R600a, and L-41b (R1234ze(E)/R32 (27/73 mass %)) inside an 8 mm inner diameter horizontal tube were investigated. The experiment was carried out at the saturation temperature of 20°C with heat flux ranging from 5.0 to 10.0 kW·m −2 and mass flux ranging from 200 to 400 kg·m −2 ·s −1 . The influence of mass flux, heat flux, and quality on the heat transfer coefficients and frictional pressure drops were examined and discussed. The results show that the local heat transfer coefficients of R1234ze(E) are averagely 33% and 18% lower than those of R600a and L-41b, respectively. The frictional pressure drops of R1234ze(E) are 21% lower than those of R600a but 6% greater than those of L-41b. Meanwhile, the experimental data of local heat transfer coefficients and frictional pressure drops are compared with some well-known correlations available in literatures.
url https://doi.org/10.1177/1687814015606311
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AT huazhang experimentalinvestigationofflowboilingheattransferandpressuredropscharacteristicofr1234zeer600aandamixtureofr1234zeer32inahorizontalsmoothtube
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