摘要
某别墅拟采用空气源热泵辅助太阳能供暖系统,采用DEST软件对供暖期逐时热负荷进行模拟计算。介绍空气源热泵辅助太阳能供暖系统流程及运行策略,对太阳能集热器面积、蓄热水箱容积、循环泵(太阳能集热器侧循环泵、空气源热泵机组侧循环泵、用户侧循环泵)、空气源热泵机组进行设备选型。采用TRNSYS模拟软件建立空气源热泵辅助太阳能供暖系统模型,对用户供回水温度(以及温差)随室外温度的变化、耗电量进行模拟计算。供暖期用户供水温度基本维持在32℃左右,供水温度稳定。供回水温差与室外温度的变化相反,说明供暖系统符合运行规律。将单纯采用空气源热泵机组的供暖系统(以下简称单纯空气源热泵供暖系统)作为比较对象,以费用年值作为评价目标,比较两种供暖系统的经济性。空气源热泵辅助太阳能供暖系统、单纯空气源热泵供暖系统供暖期耗电量分别为865.84、3 434.25 kW·h/a,费用年值分别为3 484.21、3 564.33元/a,空气源热泵辅助太阳能供暖系统的经济性更优。
An air source heat pump assisted solar heating system is to be adopted in a villa,and the hourly heat load during heating period is simulated and calculated by DEST software. The flow and operation strategy of air source heat pump assisted solar heating system are introduced,and the equipment selection for solar collector area,storage hot water tank volume,circulating pumps （solar collector side circulating pump,air source heat pump unit side circulating pump and user side circulating pump） and air source heat pump unit is performed. The model for air source heat pump assisted solar heating system is established by TRNSYS simulation software,and the variation of the user supply and return water temperature （and temperature difference） with outdoor temperature and the power consumption are simulated and calculated. The supply water temperature during the heating period is basically maintained at about 32 ℃,and the supply water temperature is stable. The temperature difference between the supply and return water is opposite to change of outdoor temperature,which shows that the heating system conforms to the operation law. The heating system using only air source heat pump unit （hereinafter referred to as a simple air source heat pump heating system） is used as the object of comparison,and the annual cost is used as the evaluation target to compare the economy of the two heating systems. The power consumptions of the air source heat pump assisted solar heating system and the air source heat pump heating system are 865.84 kW·h and 3 434.25 kW·h respectively,and the annual costs are 3 484.21 yuan and 3 564.33 yuan. The air source heat pump assisted solar heating system is more economical.
作者
卞峰
梁慧媛
牛蔚然
邵珠坤
BIAN Feng;LIANG Huiyuan;NIU Weiran;SHAO Zhukun
出处
《煤气与热力》
2018年第9期19-23,共5页
Gas & Heat
关键词
空气源热泵辅助太阳能供暖系统
负荷模拟
设备选型
技术经济性
air source heat pump assisted solar heating system
load simulation
equipment selection
technical economy
