摘要
为了解决严寒地区单一地源热泵系统长期运行导致土壤热失衡的问题,本文构建了有效解决土壤热失衡的空气-土壤源复合式热源热泵系统。基于DeST和Trnsys对哈尔滨市某办公建筑空气-土壤源热泵系统的经济性和CO_(2)减排率展开案例研究,对全年动态冷热负荷及空气-土壤源系统运行特性展开探究,对比分析了五种不同运行策略下空气-土壤源热泵系统的经济性和CO_(2)减排率。研究结果表明当采用空气-土壤源热泵系统时,系统在地源热泵承担20%冬季供暖热负荷,空气源热泵承担80%冬季供暖热负荷的运行策略下的经济性最高,系统在地源热泵承担80%冬季供暖热负荷,空气源热泵承担20%冬季供暖热负荷的运行策略下的CO_(2)减排率最高,并能够有效解决土壤热不平衡问题。
In order to solve the problem of soil heat unbalance caused by the long-term operation of a single ground source heat pump system in severe cold area,the study constructed an air-ground source heat pump system to effectively solve the soil heat unbalance.Based on DeST and Trnsys,a case study was carried out on the economy and CO_(2) emission reduction rate of an office building air-ground source heat pump system in Harbin,and the dynamic cooling and heating loads and the operating characteristics of the air-ground source system throughout the year were explored.The economy and CO_(2) emission reduction rate of the air-ground source heat pump system under five different operation strategies were compared and analyzed.The results show that when the air-ground source heat pump system is adopted,the economy of the system are the highest under the operation strategy that the ground source heat pump bears 20%of the winter heating heat load and the air source heat pump bears 80%of the winter heating heat load.The CO_(2) emission reduction rate are the highest under the operation strategy that the ground source heat pump bears 80%of the winter heating heat load and the air source heat pump bears 20%of the winter heating heat load,which can effectively solve the soil heat imbalance.
作者
宫静
王松庆
GONG Jing;WANG Song-qing(Civil Engineering Institute,Northeast Forestry University,Harbin 150040,China)
出处
《节能技术》
CAS
2022年第4期315-320,共6页
Energy Conservation Technology
基金
国家自然科学基金资助项目(41702242)。
关键词
严寒地区
空气-土壤源热泵
负荷特性
经济性
CO_(2)减排率
severe cold area
air-ground source heat pump system
load characteristic
economy
CO_(2)emission reduction rate
