设计提出一种用于空气源热泵的可改变蓄能单元数量的冷热水蓄存型末端装置,并设置风机调节其冷热释放速率。为探究末端装置在冷热蓄放工况蓄能介质温度与室温变化时的传热特性,建立末端装置的传热计算模型并编写计算程序,搭建实验平台测试了实验数据验证计算模型的正确性。结果显示：不同数量蓄能单元的末端装置对传热特性的影响很小,在边蓄边放、自然释冷释热工况向房间放能时,末端装置的传热系数随其表面温度与实验小室室内温度之差增大而增大,而开风机增大释冷释热速率工况的传热系数约为25.2 W/（m2∙K）。
Abstract
To make full use of the electricity price in rural areas during the low-valley period and reduce the heating and cooling costs of rural buildings for energy saving and emission reduction,in this paper a cold and hot water storage terminal device for air source heat pumps is innovatively designed,which can change the number of energy storage units. Also,a fan is used to adjust its cold and hot release rate. In order to explore the heat transfer characteristics of the terminal device when the temperature of the energy storage medium and the room temperature change under the cold and hot storage and release conditions,the heat transfer calculation model of the terminal device is established and the calculation program is compiled. The experimental platform is built to obtain the experimental data and verify the correctness of the calculation model. The results show that different numbers of energy storage units have little influence on the heat transfer characteristics of the terminal device. The heat transfer coefficient of the terminal device increases with the increase of the difference between the surface temperature and the indoor temperature of the experimental chamber in the case of energy is discharged and stored simultaneously,also heat is stored and released to room naturally. In addition, the heat transfer coefficient of the terminal device is approximately 25.2 W/（m2∙K） when the fan is turned on to increase the heat release rate. The research results can provide a basis for the selection and use of the terminal device capacity in practical engineering.
关键词
空气源热泵 /
蓄能 /
传热特性 /
蓄能单元 /
末端装置
Key words
air source heat pumps /
energy storage /
heat transfer performance /
energy storage unit /
terminal device
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
[1] 郝杨洋. 北京市农村地区煤改清洁能源供热技术与政策研究[D]. 北京: 北京建筑大学, 2018.
HAO Y Y.Research on technology and policy of coal to clean energy heating in Beijing rural areas[D]. Beijing: Beijing University of Civil Engineering and Architecture, 2018.
[2] 乐慧, 李好玥, 江亿. 用空气源热泵实现农村采暖的“煤改电”同时为电力削峰填谷[J]. 中国能源, 2016, 38(11): 9-15.
LE H,LI H Y,JIANG Y.Realization of substituting coal with electricity and enhancing the efficiency of electricity allocation by using air source heat pump[J]. Energy of China, 2016, 38(11): 9-15.
[3] 张寅平. 冰蓄冷研究的现状与展望[J]. 暖通空调, 1997, 27(6): 25-30.
ZHANG Y P.Present state and perspectives of ice cool storage research[J]. Hv&Ac,1997, 27(6): 25-30.
[4] DU H, ZHOU X L, HE L X, et al.Performance analysis of solar and air source heat pump hybrid heating systems applied in Shandong rural area[J]. IOP conference series: earth and environmental science, 2019, 238: 012075.
[5] ORÓ E, DE GRACIA A, CASTELL A, et al.Review on phase change materials(PCMs)for cold thermal energy storage applications[J]. Applied energy, 2012, 99: 513-533.
[6] 焦玉洗. 蓄能型空气源热泵地板辐射供暖系统在重庆居住建筑中的应用研究[D]. 重庆: 重庆大学,2017.
JIAO Y X.Study on sensible heat storage air source heat pump for floor radiant heating system in Chongqing living building[D]. Chongqing: Chongqing University, 2017.
[7] 王汝金, 袁旭东, 贾甲, 等. 蓄热温度对水蓄热型空气源热泵系统供暖经济性的影响[J]. 制冷与空调, 2021, 21(2): 33-37.
WANG R J, YUAN X D, JIA J, et al.Influence of heat storage temperature on heating economy of air source heat pump system with water heat storage[J]. Refrigeration and air-conditioning, 2021, 21(2): 33-37.
[8] 邱珊珊, 樊洪明, 陈浩南. 翅片微热管式水蓄热系统在北京农村住宅采暖中的应用研究[J]. 建筑科学, 2019, 35(8): 43-49.
QIU S S, FAN H M, CHEN H N.Application of water heat storage device in Beijing rural residential heating system[J]. Building science, 2019, 35(8): 43-49.
[9] 陈明彪, 宋文吉, 王瑛滢, 等. 跨季节蓄冷特性与系统设计优化[J]. 太阳能学报, 2022, 43(6): 1-7.
CHEN M B, SONG W J, WANG Y Y, et al.Characteristics of seasonal cool storage technology and design optimization of system[J]. Acta energiae solaris sinica, 2022, 43(6): 1-7.
[10] 王玉来, 李永安, 芦志凯, 等. 我国北方农村地区“弃煤”供暖方案探讨[J]. 建筑节能, 2021, 49(1): 134-139.
WANG Y L, LI Y A, LU Z K, et al.Heating schemes without coal-burning in rural areas of northern China[J]. Building energy efficiency, 2021, 49(1): 134-139.
[11] 王莹莹, 康文俊, 刘艳峰, 等. 基于居民行为模式的陕西村镇民居采暖策略[J]. 太阳能学报, 2018, 39(11): 3026-3031.
WANG Y Y, KANG W J, LIU Y F, et al.A heating strategy for rural residential buildings based on behavior patterns of residents in Shaanxi province[J]. Acta energiae solaris sinica, 2018, 39(11): 3026-3031.
[12] 章熙民, 朱彤, 安青松, 等. 传热学[M]. 北京: 中国建筑工业出版社, 2014: 155-237.
ZHANG X M, ZHU T, AN Q S, et al.Heat transfer[M]. Beijing: China Architecture & Building Press, 2014: 155-237.
基金
国家重点研发计划（2018YFD1100704-01）
PDF(2199 KB)
