Experimental analysis on a novel solar collector system achieved by   supercritical CO2 natural convection

doi:10.1016/j.enconman.2013.08.059

CORC > 北京大学 > 工学院

	Experimental analysis on a novel solar collector system achieved by supercritical CO2 natural convection
	Chen, Lin ; Zhang, Xin-Rong
刊名	energy conversion and management
	2014
关键词	Solar collector Supercritical fluid Natural convection System efficiency Carbon dioxide HEAT-TRANSFER WATER-HEATER CARBON-DIOXIDE CIRCULATION LOOP RANKINE-CYCLE FLOW ENERGY PERFORMANCE POWER PUMP
DOI	10.1016/j.enconman.2013.08.059
英文摘要	Solar collector has become a hot topic both in scientific research and engineering applications. Among the various applications, the hot water supply demand accounts for a large part of social energy consumption and has become one promising field. The present study deals with a novel solar thermal conversion and water heater system achieved by supercritical CO2 natural circulation. Experimental systems are established and tested in Zhejiang Province (around N 30.0 degrees, E 120.6 degrees) of southeast China. The current system is designed to operate in the supercritical region, thus the system can be compactly made and achieve smooth high rate natural convective flow. During the tests, supercritical CO2 pipe flow with Reynolds number higher than 6700 is found. The CO2 fluid temperature in the heat exchanger can be as high as 80 degrees C and a stable supply of hot water above 45 degrees C is achieved. In the seasonal tests, relative high collector efficiency generally above 60.0% is obtained. Thermal and performance analysis is carried out with the experiment data. Comparisons between the present system and previous solar water heaters are also made in this paper. (C) 2013 Elsevier Ltd. All rights reserved.; Thermodynamics; Energy & Fuels; Mechanics; Physics, Nuclear; SCI(E); EI; 7; ARTICLE; zhxrduph@yahoo.com; 173-182; 77
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/154381]
专题	工学院
推荐引用方式 GB/T 7714	Chen, Lin,Zhang, Xin-Rong. Experimental analysis on a novel solar collector system achieved by supercritical CO2 natural convection[J]. energy conversion and management,2014.
APA	Chen, Lin,&Zhang, Xin-Rong.(2014).Experimental analysis on a novel solar collector system achieved by supercritical CO2 natural convection.energy conversion and management.
MLA	Chen, Lin,et al."Experimental analysis on a novel solar collector system achieved by supercritical CO2 natural convection".energy conversion and management (2014).