MEASUREMENT OF THE EFFICIENCY OF EVACUATED TUBE SOLAR COLLECTORS UNDER VARIOUS OPERATING CONDITIONS
作者机构：Department of Biosystems EngineeringUniversity of ManitobaWinnipegCanada
出 版 物：《Journal of Green Building》 (绿色建筑学报（英文）)
年 卷 期：2012年第7卷第3期
页 面：114-130页
学科分类：0202[经济学-应用经济学] 02[经济学] 020205[经济学-产业经济学]
基 金：financial support the Biosystems Engineering technicians and Alternative Village team for their assistance
主 题：solar collector evacuated tube solar hot water
摘 要：The operating efficiency of evacuated tubes themselves under varying environmental conditions and installation scenarios,independent of water and space heating auxiliary equipment,are not readily available ***,Manitoba specific data has not been *** purpose of this research program was to measure the efficiency of evacuated tube solar collectors under various operating conditions including:the angle of inclination towards the incident solar radiation,heat transfer fluid flow rate,glazing installation,and number of evacuated *** operating conditions and configurations were chosen to represent realistic or probable installation scenarios and environmental ***,the research aimed to identify the suitability of evacuated tube solar collectors to each of the *** design values are of use for appropriate sizing of water or space heating systems,system configuration and optimization,and calculation of return on *** scope of the research project was limited to the efficiency of various configurations of a 32-tube panel,not the entire solar domestic hot water or space heating ***,factors such as heat loss in the tubing,solar storage tank,and heat exchanger efficiency were not *** findings indicated that efficiency varied by approximately 5%between the different collector configurations,as observed from the overlay graph of *** the efficiency of a collector is considered within a system it is proposed that effectiveness may be a better measure of overall performance.
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