天棚辐射混凝土板显热蓄能特性研究  

Sensible Heat Storage of the Radiant Concrete Ceiling

作　　者：李娜[1] 裴智超[1] 王永红[1] 袁东立[1] 

机构地区：[1]中国建筑科学研究院,北京100013

出　　处：《建筑节能》2011年第3期48-51,共4页BUILDING ENERGY EFFICIENCY

摘　　要：普通天棚混凝土板利用混凝土板的显热特性蓄能。与常用的墙体蓄能(潜热蓄能)不同,混凝土板显热蓄能能力小,但由于其不增加初投资、对现有建筑无需改造等优点,其减少空调系统运行费用的潜力不可忽视。通过Fluent模拟和数据分析,给出天棚辐射混凝土板的蓄能能力随特征温差及管间距变化的曲线。对于某一节能建筑,利用天棚辐射混凝土板的显热蓄能特性每年可以减少3.00元/m2的运行费用,相当于空调系统运行费用的14.7%。The energy storage of ordinary radiant concrete ceiling is analyzed,which uses sensible-heat for storing and releasing energy.Different from the general energy storage way using latent-heat of phase-change materials for the envelope,the sensible heat storage capability of concrete ceiling is small,and there is no more investment,no rebuilding demand for the existing houses.Its potential of operation cost-saving on air-conditioning system shall be focused.The curves of heating storage for the concrete ceiling are presented,changing with the temperature difference and pipes＇ distance,through Fluent simulating and data analysis.Concrete ceiling＇s storage capability can reduce the running-charge by 3.00 yuan/㎡（14.7% to the total air-conditioning running charge for a energy-saving building）.

关 键 词：天棚辐射混凝土板 显热蓄能 节能建筑 

分 类 号：TU831[建筑科学—供热、供燃气、通风及空调工程]