有限容积的湖水源热泵冬季供暖运行分析  

Operating analysis on finite volume of lake-water source heat pump in winter heating

作　　者：童明伟[1] 秦增虎[1] 张二峰[1] 

机构地区：[1]重庆大学低品位能源利用技术及系统教育部重点实验室,重庆400044

出　　处：《重庆大学学报（自然科学版）》2012年第8期6-10,共5页Journal of Chongqing University

基　　金：国家'十一五'科技支撑计划重点项目(2007BAB21B02-1-1)

摘　　要：分析了在冬季采暖时重庆大学主教学楼增设湖水源热泵的可行性,对湖水水温水质情况进行了测定,发现水质富营养化较为严重,在湖水进入换热器之前需要对湖水进行净化处理。分析了湖体的热承载能力,并在冬季供暖运行工况下对湖体的逐时温度进行了模拟计算。当重庆1月份内气温平均为5～8℃时,湖水作为蒸发器的循环水不断向热泵机组提供能量,假定湖水初始温度为13.7℃,对1月份逐时水温运行的数值模拟表明:到第24d的时,湖水的温度已降低到4.04℃,蒸发器表面就可能出现结冰而引起机组的冰堵,这将危及换热设备安全,因此必须设置辅助加热器才能保证主楼的采暖。The feasibility of the main teaching building of Chongqing University additional lake water source heat pump during the winter heating is analyzed and the water temperature and quality of the artificial lake are determined, that the water is more serious eutrophication, and it must be purified before the water enters heat exchangers. Heat carrying capacity of lake is analyzed and hourly temperature of the lake is simulated during the winter heating operating conditions. When the average temperature is 5 - 8℃ in January in Chongqing,the lake as an evaporator cycle water provide energy to heat pump constantly, assumed initial temperature of water is 13.7 ℃ ,hourly water temperature is simulated in January. The water temperature has dropped to 4.04 ℃ at 24 d, the evaporator surface may be frozen and cause the phenomenon of ice- clogging, which will endanger the safety of heat transfer equipment, therefore, auxiliary heater must be set to ensure the main building heating.

关 键 词：湖水源热泵 热承载能力 热交换 数值模拟 

分 类 号：TU831.8[建筑科学—供热、供燃气、通风及空调工程]