HEAT TRANSFER CHARACTERISTICS OF WATER ENERGY STORAGE TERMINAL DEVICE FOR NEW AIR SOURCE HEAT PUMP

Shao Xuze; Zhang Hualing

doi:10.19912/j.0254-0096.tynxb.2022-1300

PDF(2199 KB)

Acta Energiae Solaris Sinica ›› 2023, Vol. 44 ›› Issue (12) : 420-424. DOI: 10.19912/j.0254-0096.tynxb.2022-1300

HEAT TRANSFER CHARACTERISTICS OF WATER ENERGY STORAGE TERMINAL DEVICE FOR NEW AIR SOURCE HEAT PUMP

Shao Xuze, Zhang Hualing

Author information +

History +

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.

Key words

air source heat pumps / energy storage / heat transfer performance / energy storage unit / terminal device

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

Shao Xuze, Zhang Hualing. HEAT TRANSFER CHARACTERISTICS OF WATER ENERGY STORAGE TERMINAL DEVICE FOR NEW AIR SOURCE HEAT PUMP[J]. Acta Energiae Solaris Sinica. 2023, 44(12): 420-424 https://doi.org/10.19912/j.0254-0096.tynxb.2022-1300

References

[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.