CAJ | 학술논문

以南京某混合土壤热泵系统为例,分析比较不同冷热源运行策略、围护结构及空调末端系统对建筑能耗的影响.该混合土壤热泵系统以冷却塔为辅助散热设备,使得通过地埋管换热器向土壤散出的热量和从土壤中取出的热量相等.利用能耗模拟软件EnergyPlus对该厂房建筑进行了全能耗分析,并对冷却塔及地埋管换热器换热量进行计算.然后提出2种运行方法对冷却塔进行启停控制.比较墙面与屋顶不同颜色时建筑能耗特性,结果表明:供冷季节黑色外围护结构的建筑冷负荷是白色外围护结构的1.2倍;建筑保温性能相同时,以风机盘管为空调末端,热泵机组的年能耗比辐射地板系统大44.7 GJ.
이남경모혼합토양열빙계통위례,분석비교불동랭열원운행책략、위호결구급공조말단계통대건축능모적영향.해혼합토양열빙계통이냉각탑위보조산열설비,사득통과지매관환열기향토양산출적열량화종토양중취출적열량상등.이용능모모의연건EnergyPlus대해엄방건축진행료전능모분석,병대냉각탑급지매관환열기환열량진행계산.연후제출2충운행방법대냉각탑진행계정공제.비교장면여옥정불동안색시건축능모특성,결과표명:공랭계절흑색외위호결구적건축랭부하시백색외위호결구적1.2배;건축보온성능상동시,이풍궤반관위공조말단,열빙궤조적년능모비복사지판계통대44.7 GJ.
A hybrid ground-coupled heat pump(HGCHP)project in Nanjing,China is chosen to analyze the building energy-consumption properties in terms of different control strategies,building envelope and the terminal air-conditioning system.The HGCHP uses a supplemental heat rejecter to dissipate extra thermal energy to guarantee underground soil heat balance.The software EnergyPlus is employed to simulate the project and design the heat flow of the cooling tower and the borehole heat exchanger(BHE).Then two feasible control strategies for the cooling tower and the borehole heat exchanger are proposed.The energy-saving potential of the building envelope is analyzed in terms of the surface color of the wall/roof.With the same terminal system,it is found that in the cooling season the heat flow of the insulated building with black wall/roof is 1.2 times more than that with white wall/roof.With the same insulated building and gray wall/roof,it is concluded that the heat pump units for a primary air fan-coil system show an annual energy consumption increase of 44.7 GJ compared with a radiant floor system.