Experimental and theoretical investigation of regenerative total heat exchanger with periodic flow for air-conditioning systems

文化大學機構典藏 CCUR > 理工學院 > 工學院 > 機械工程系暨機械工程學系數位機電研究所 > 期刊論文 > Item 987654321/39363

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题名:	Experimental and theoretical investigation of regenerative total heat exchanger with periodic flow for air-conditioning systems
作者:	Chang, CC (Chang, Chih-Chung) Chen, SL (Chen, Sih-Li) Lin, TY (Lin, Tzu-Yuan) Chiang, YC (Chiang, Yuan-Ching)
贡献者:	機械系
关键词:	Periodic total heat exchanger Heat effectiveness Heat and mass transport
日期:	2017-09
上传时间:	2018-01-29 10:29:41 (UTC+8)
摘要:	This study experimentally investigates the theoretical performance of the periodic total heat exchanger. The total heat exchanger has a double flow-circuit heat exchange function for periodic positive-and reverse-directional pumping. The operating period parameters are 2 minutes, 3 minutes, 4 minutes, 6 minutes, and 8 minutes. Under the temperature and humidity ratio differences, 10 degrees C and 4 g kg(-1), the operating period of 3 min results in optimal performance of sensible heat effectiveness, latent heat effectiveness, and total heat effectiveness. This study also proposes the lumped system, with dimensionless analysis assumption applied to the whole, and solves it in a one-dimensional model involving the heat and mass transport equations. The dimensionless operating period dominates latent heat effectiveness, while the latent heat effectiveness decreases when the dimensionless operating period increases. (C) 2017 Elsevier Ltd and IIR. All rights reserved.
關聯:	INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID 卷: 81 頁碼: 123-133
显示于类别:	[機械工程系暨機械工程學系數位機電研究所] 期刊論文

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