一种分仓真空管太阳能热水器运行特性实验研究  

Experimental Study on the Operating Characteristic of a Trichotomous Vacuum Tube Solar Water Heater

作　　者：邢秀兰[1] 高文峰[1] 刘滔[1] 林文贤[1] 刘佰红 胡小芳[1] 

机构地区：[1]云南师范大学太阳能研究所教育部可再生能源材料先进技术与制备重点实验室,云南昆明650092

出　　处：《云南师范大学学报（自然科学版）》2015年第4期11-18,共8页Journal of Yunnan Normal University:Natural Sciences Edition

基　　金：国家自然科学基金资助项目(51266016;51469035)

摘　　要：对一种分仓真空管太阳能热水器在晴天和多云天两种典型天气条件下进行了实验测试与分析,并与常规真空管太阳能热水器测试对比.结果显示无论是在晴天还是在多云天气下,分仓真空管太阳能热水器三个仓在当天运行条件下温度分层都比常规真空管太阳能热水器的明显,顶部和中部水温相差不大,但与底部水温相差较大.每个仓底部存在冷水区,但高温仓内的较明显.夜间温降期间,低温仓温度分层最严重,高温仓底部水温有明显的先升温后平缓的趋势.In this paper,an experimental study has been carried out to examine the operating characteristic of a trichotomous vacuum tube water heater,which has three separate water tanks,under typical sunny and cloudy weather condition,which is also compared to that of a regular solar water heater.The results show that the temperature stratification of in the trichotomous solar water heater is stronger than that in the regular solar water heater,no matter it was under the sunny or cloudy weather conditions.In the trichotomous vacuum solar water heater,the temperature difference between the top and the middle is small,but there is a large temperature difference between the top and the bottom.In each water tank,there is a cold water zone in the bottom region,which is particularly evident in the high temperature water tank.During the nighttime cooling period,the temperature stratification in the low temperature water tank in the trichotomous solar water heater is the strongest,while in the bottom region of the high temperature water tank,the water temperature has the trend to rise initially but gradually become stable subsequently.

关 键 词：分仓真空管太阳能热水器 日有用得热量 平均热损因数 热性能 

分 类 号：TK515[动力工程及工程热物理—热能工程]