摘要
空气源热泵是纳入GB 55015—2021《建筑节能与可再生能源利用通用规范》中的可再生能源利用技术之一。在北方清洁取暖电气化、长江流域供暖常态化、建筑能耗超低化趋势的推动下,空气源热泵供暖应用迅速增长。由于空气源热泵供热能力和建筑热负荷需求随室外温度变化趋势相反,空气源热泵供暖设计中的平衡点确定对系统容量、供暖性能和投资运行费用具有重要影响,本文分析了低温型和常规型空气源热泵供暖产品在不同地区、不同节能等级、不同建筑类型建筑中应用的性能和经济平衡点变化,结果显示热泵初投资影响使经济平衡点普遍高于性能平衡点;且在相同应用情境下,低温型热泵的平衡点普遍低于或等于常温型热泵,全生命周期成本更低,供热季节性能系数更高,具有更好的应用性能。
Air source heat pump technology is one of the renewable energy utilization technologies included in GB 55015-2021 Code for Energy Efficiency and Renewable Energy Application in Buildings. Driven by the trend of electrification of clean heating in North China, normalization of heating in the Yangtze River Basin, and ultra-low energy consumption of buildings, the application of air source heat pumps in China has increased rapidly. Since the heating capacity of the air source heat pump and the heating load demand of the building vary with the outdoor temperature, the determination of the balance point in the design of air source heat pump has a great impact on the system capacity, heating performance and investment and operation costs. This paper analyzes the changes in performance and economic balance point of low-temperature and conventional air source heat pump heating products in different areas, different energy-saving levels, and different building types. The results show that the economic balance point is generally higher than the performance balance point due to the influence of the initial investment of heat pump, and in the same application scenario, the balance point of low-temperature heat pumps is generally lower than or equal to that of normal temperature heat pumps, with lower life-cycle costs, higher heating seasonal performance factor, and better application performance.
作者
杨灵艳
王仕杰
周权
路宾
张瑞雪
YANG Lingyan;WANG Shijie;ZHOU Quan;LU Bin;ZHANG Ruixue(China Academy of Building Research y Beijing 100013,China;Jianke EET Co.,Ltd.,Beijing 100013,China)
出处
《建筑科学》
CSCD
北大核心
2022年第2期32-39,共8页
Building Science
基金
国家重点研发计划项目“空气源热泵多维供暖特性研究”(2019YFE0103000)。
关键词
空气源热泵供暖
性能平衡点
全生命周期经济平衡点
动态负荷模拟
air source heat pump heating
energy balance point
economic balance point of the life cycle
dynamic load simulation
