夏热冬冷地区地埋管换热器直接供冷系统模拟  

Simulation of Direct Cooling System of Buried Pipe Heat Exchanger in Hot Summer and Cold Winter Areas

作　　者：鲍晓峰 胡平放[1] 朱娜 雷飞[1] 邢路 王建东 杨阳 林祖栋 BAO Xiaofeng;HU Pingfang;ZHU Na;LEI Fei;XING Lu;WANG Jiandong;YANG Yang;LIN Zudong

机构地区：[1]华中科技大学环境学院,湖北武汉430074 [2]绿城乐居建设管理集团有限公司,浙江杭州310000

出　　处：《煤气与热力》2021年第8期21-24,V0042,V0043,共6页Gas & Heat

基　　金：国家自然科学基金“地源热泵-辐射末端空调系统与建筑热环境协同优化研究”(51678262)。

摘　　要：以武汉某办公房间为模拟对象,采用模拟方法,研究夏热冬冷地区地埋管换热器直接供冷系统(末端采用毛细管辐射供冷系统)的供冷期工作时段适用时间(预期平均评价值大于-1.5且小于1.5的时间)。采用相同模拟方法,确定合肥、南昌、上海、南京、杭州等夏热冬冷城市的供冷期工作时段适用时间。对于武汉:供冷期工作时段室内平均温度为28.2℃。供冷期工作时段有350 h室内温度低于27℃,均分布在供冷初末期:供冷初期有208 h,供冷末期有142 h。供冷期工作时段毛细管平均进水温度为22.2℃,平均出水温度为23.7℃,平均进出水温差为1.5℃。以PMV值为评价指标,供冷期工作时段适用时间有359 h,绝大多数分布在供冷初末期:供冷初期有279 h,供冷末期有79 h。对于合肥、南昌、上海、南京、杭州:以PMV值为评价指标,供冷期工作时段适用时间绝大多数分布在供冷初末期,供冷初末期工作时段适用时间分别为358、281、495、436、429 h。Taking an office room in Wuhan as the simulation object,the simulation method is used to study the applicable time(the predicted mean vote(PMV)is greater than-1.5 and less than 1.5)of the buried pipe heat exchanger direct cooling system(capillary radiant cooling system at the end)during working hours of the cooling period in the hot summer and cold winter areas.The same simulation method is used to determine the applicable time during working hours of the cooling period in hot summer and cold winter cities such as Hefei,Nanchang,Shanghai,Nanjing and Hangzhou.For Wuhan,the average indoor temperature during the cooling period is 28.2℃.During the working hours of the cooling period,the indoor temperature is lower than 27℃ for 350 hours,which are distributed in the initial and final stages of cooling period:208 hours in the initial stage of cooling period and 142 hours in the final stage of cooling period.During the working hours of the cooling period,the average inlet water temperature of the capillary is 22.2℃,the average outlet water temperature is 23.7℃,and the average inlet and outlet water temperature difference is 1.5℃.Taking PMV as the evaluation index,the working hours of the cooling period are applicable time for 359 hours,most of which are distributed in the initial and final stages of cooling period:279 hours in the initial stage of cooling period and 79 hours in the final stage of cooling period.For Hefei,Nanchang,Shanghai,Nanjing and Hangzhou,using PMV as the evaluation index,most of the applicable time during working hours during the cooling period are distributed in the initial and final stages of cooling,and the applicable times are 358,281,495,436 and 429 hours respectively.

关 键 词：地埋管换热器 直接供冷 毛细管辐射供冷供热 夏热冬冷地区 办公建筑 

分 类 号：TU831.6[建筑科学—供热、供燃气、通风及空调工程]