防护工程内信息化设备散热量大,余热会导致工程内部温度升高、设备失效甚至瘫痪。结合垂直埋管运行高效和水平埋管成本低廉的优势,采用复合埋管式地源热泵系统处理工程内余热以及口部潮湿问题,计算工程内通信机房和办公大厅的全年逐时负...防护工程内信息化设备散热量大,余热会导致工程内部温度升高、设备失效甚至瘫痪。结合垂直埋管运行高效和水平埋管成本低廉的优势,采用复合埋管式地源热泵系统处理工程内余热以及口部潮湿问题,计算工程内通信机房和办公大厅的全年逐时负荷;利用TRNSYS仿真软件构建复合埋管式与垂直埋管式热泵系统模型,比较复合埋管式热泵系统与传统的垂直埋管式热泵系统的热性能、经济效益及防潮效果。结果表明,在工程口部设定水平地埋管可有效降低口部空气相对湿度,起到防潮防湿的作用;在复合埋管式热泵系统总性能系数(coefficient of performance,COP)更高的前提下,复合埋管式热泵系统的总成本较垂直埋管式热泵系统降低了21.8%。展开更多
Aiming at the ground-coupled source heat pump that possesses the shortcomings of occupying larger land,this article studies the heat exchanged of heat exchanger in piling,and compares it with common heat exchangers bu...Aiming at the ground-coupled source heat pump that possesses the shortcomings of occupying larger land,this article studies the heat exchanged of heat exchanger in piling,and compares it with common heat exchangers buried directly. The result indicates that the heat exchanger makes the best use of structure of building,saves land,reduces the construction cost,and the heat exchanged is obviously more than exchangers buried directly. In winter condition,when W-shape pipe heat exchanger in pile foundation is 50 m deep and diameter is 800 mm,it transfers 1.2-1.3 times as large as the one of single U-shape buried directly at the flow rate of 0.6 m/s,whose borehole diameter is 300 mm. And in summer condition it does about 2.0-2.3 times as that of U-shape one.展开更多
文摘防护工程内信息化设备散热量大,余热会导致工程内部温度升高、设备失效甚至瘫痪。结合垂直埋管运行高效和水平埋管成本低廉的优势,采用复合埋管式地源热泵系统处理工程内余热以及口部潮湿问题,计算工程内通信机房和办公大厅的全年逐时负荷;利用TRNSYS仿真软件构建复合埋管式与垂直埋管式热泵系统模型,比较复合埋管式热泵系统与传统的垂直埋管式热泵系统的热性能、经济效益及防潮效果。结果表明,在工程口部设定水平地埋管可有效降低口部空气相对湿度,起到防潮防湿的作用;在复合埋管式热泵系统总性能系数(coefficient of performance,COP)更高的前提下,复合埋管式热泵系统的总成本较垂直埋管式热泵系统降低了21.8%。
基金Project(2006BAJ03A10) supported by the National Key Technology R&D Program of China
文摘Aiming at the ground-coupled source heat pump that possesses the shortcomings of occupying larger land,this article studies the heat exchanged of heat exchanger in piling,and compares it with common heat exchangers buried directly. The result indicates that the heat exchanger makes the best use of structure of building,saves land,reduces the construction cost,and the heat exchanged is obviously more than exchangers buried directly. In winter condition,when W-shape pipe heat exchanger in pile foundation is 50 m deep and diameter is 800 mm,it transfers 1.2-1.3 times as large as the one of single U-shape buried directly at the flow rate of 0.6 m/s,whose borehole diameter is 300 mm. And in summer condition it does about 2.0-2.3 times as that of U-shape one.
