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.
出处
《建筑节能》
CAS
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)
关键词
土壤直接供冷
实验研究
能效比
soil free cooling
experimental study
energy efficiency rate
