上海地区土壤直接供冷技术应用效果实验研究  

Experimental Study of A Free Cooling System Using Soil as Heat Sink in Shanghai

作　　者：倪璇[1] 谭洪卫[1] 雷勇[1] 

机构地区：[1]同济大学暖通空调及燃气研究所,上海200092

出　　处：《建筑节能》2012年第10期19-23,共5页BUILDING ENERGY EFFICIENCY

基　　金：新能源及可再生能源建筑应用技术的适应性研究和示范(2010DFA72740-05)

摘　　要：在土壤直接供冷系统实验平台上对系统各项参数进行了实测,研究该系统在上海地区使用效果。结果表明,单U管供水温度保持在20～22℃,单位埋管深度供冷量为21.7 W/m;通过调节开启井口数量将室内温度控制在舒适范围条件下,系统每小时耗电量仅0.17 kW.h,能效比达到10以上;实验系统仅处理显热负荷,长期运行对土壤温度影响小,缓解热堆积现象。但系统除湿能力差。A free cooling system using soil as heat sink in Shanghai is expounded.Parameters are measured to analyze the system’s effect.The experimental results show that,each U-tube provides water with temperature ranged from 20 to 22 ℃,average heat exchange rate is 21.7W per meter.The system consumes electricity about 0.17kWh per hour;its energy efficiency rate reaches 10 while indoor air temperature can be controlled in a comfortable range.The system handles only sensitive load,heat accumulation is not evident with long term operation.But the system lacks capacity of dehumidification.

关 键 词：土壤直接供冷 实验研究 能效比 

分 类 号：TU831[建筑科学—供热、供燃气、通风及空调工程]