Development of Energy Science May 2014, Volume 2, Issue 2, PP.8-14
Experimental Analysis of the Photo-thermal Conversion Efficiency with a Solar Collector in Cold Area Xiaoyan Liu 1,2, Jing Huang 1#, Yongying Jia 1, Chuan Ma1 1. College of Civil and Architecture Engineering, Northeast Petroleum University, Daqing 163318, China 2. The Higher Educational Key Laboratory for Disaster Prevention, Mitigation and Protection Engineering of Heilongjiang Province, Northeast Petroleum University, Daqing 163318, China #
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Abstract The most important indicator to evaluate the merits of a solar collector is the thermal efficiency, which is an effective way to use of solar energy and achieve building energy saving if it has accurate data. This paper tested the thermal efficiency of solar collector，to measure and calculate the efficiency of two types of collector’s tank temperature changes under sunny conditions at different times throughout the day,
then plotting the efficiency curves，analyzing the application of the two types of collector in severe cold area. The
results showed that the heat-collecting capacity in unit-time of evacuate tube collector is 808.13W, the average of heat collecting efficiency is 36.71%; And flat plate solar collector is 496.94 W, the average of heat collecting efficiency is only 19.84%. These results can be explained that the research of evacuate tube collector is the focus for the severe cold area to use of solar energy technology. Keywords: Solar Energy; Collector; Experiment; Heat Collecting Efficiency
严寒地区太阳能集热器效率对比测试分析 刘晓燕 1，2，黄靖 1，贾永英 1，马川 1 1.东北石油大学 土木建筑工程学院，黑龙江 大庆 163318 2.东北石油大学 防灾减灾及防护工程黑龙江省高校重点实验室，黑龙江 大庆 163318 摘
要：评价一台太阳能集热器性能优劣的最重要指标是集热器的热效率。对集热器效率的准确测定是有效利用太阳能、实
现建筑节能的有效途径。通过对比实验，对应用于严寒地区的两种集热器的蓄热效率进行测试，对两种集热器在冬季最冷月 晴天条件下全天不同时刻水箱温度变化情况进行测定并计算，根据计算结果分别绘制出蓄热效率曲线，分析两种集热器在严 寒地区的适用情况。结果显示，真空管集热器单位时间集热量为808.13W，平均集热效率为36.71%；平板集热器单位时间集热 量为496.94W，平均效率仅为19.84%。以上结果可以说明，对真空管集热器的研究是严寒地区发展利用太阳能技术的重点。 关键词：太阳能；集热器；实验；集热效率
引言 近年来，随着世界各国对化石燃料的大规模使用，导致全球范围内气候变化，自然灾害频发，使人类的生存 环境遭到巨大的威胁，在这种形势下，太阳能等可再生能源将成为开发利用的主体[1]。太阳能以其资源丰富，能 量巨大，清洁无污染几个明显的优势将被大规模使用，而集热器作为太阳能热利用的核心部件，是开发利用太阳 -8http://www.ivypub.org/des