摘要
目的解决土壤源热泵在我国严寒地区长期运行导致该地区的土壤热失衡现象以及空气源热泵在严寒地区运行效率低下的问题。方法以沈阳市某办公建筑为例,利用DEST软件模拟该建筑的全年逐时冷、热负荷以及沈阳地区室外温度变化,以土壤热平衡为计算依据,计算土壤中的吸热与释热的热量差值以及空气源热泵的补热热量。结果设计了空气-土壤双热源热泵系统,且在我国严寒地区供暖运行工况下,得出了使用双热源热泵系统时室外最佳温度切换点的计算原理及方法,以及在沈阳地区切换使用空气-土壤双热源热泵系统的室外最佳温度点为-8℃。结论空气-土壤双热源热泵系统各自在高效率期间内正常运行,可以有效地解决严寒地区的土壤热失衡现象,更加高效节能。
To solve problem of soil heat imbalance caused by ground source heat pumps′long-term operation,low operating efficiency of air source heat pumps in severe cold areas in China,performance of air-soil dual heat source heat pump system is studied.An office building in Shenyang taken as an example,the year-by-year cold and heat load and outdoor temperature changes of this building in Shenyang area was simulated by DEST software.Based on the soil heat balance,the difference between the heat absorption and heat release in the soil,and the supplementary heat of the air source heat pump were calculated.The calculation principle and method of the optimal outdoor temperature switching point for dual heat source heat pump systems are obtained under the operating conditions of heating in severe cold areas in China.The best outdoor temperature is-8℃for the switching point to use air-soil dual heat source heat pump systems in Shenyang area.The air-soil dual heat source heat pump system operates normally during the high efficiency period,which can effectively solve the soil thermal imbalance in severe cold areas and be more efficient and energy-saving.
作者
张晓明
李通禹
陈柏龙
ZHANG Xiaoming;LI Tongyu;CHEN Bailong(School of Municipal and Environmental Engineering,Shenyang Jianzhu University,Shenyang,China,110168;Harbin Electric(Dalian)Electric Power Design Co.Ltd.,Dalian,China,116000)
出处
《沈阳建筑大学学报（自然科学版）》
CAS
CSCD
北大核心
2021年第3期528-533,共6页
Journal of Shenyang Jianzhu University：Natural Science
基金
国家自然科学基金项目(51778376)。
关键词
空气-土壤双热源热泵系统
土壤热平衡
最佳温度切换点
高效节能
Air-soil dual heat source heat pump system
soil heat balance
optimal temperature switching point
energy efficient
