A new frosting map of variable-frequency air source heat pump in severe cold region considering the variation of heating load

被引：36

作者：

Wei, Wenzhe ^{[1
]}

Ni, Long ^{[1
]}

Li, Shuyi ^{[1
]}

Wang, Wei ^{[2
]}

Yao, Yang ^{[1
]}

Xu, Laifu ^{[3
]}

Yang, Yahua ^{[3
]}

机构：

[1] Harbin Inst Technol, Sch Architecture, Key Lab Cold Reg Urban & Rural Human Settlement E, Minist Ind & Informat Technol, Harbin, Peoples R China

[2] Beijing Univ Technol, Coll Architecture & Civil Engn, Dept Bldg Environm & Facil Engn, 100 Pingleyuan, Beijing 100124, Peoples R China

[3] Nanjing TICA Climate Solut CO Ltd, Nanjing, Peoples R China

来源：

RENEWABLE ENERGY | 2020年 / 161卷

基金：

中国国家自然科学基金;

关键词：

Air source heat pump; Frosting map; Heating load; Severe cold region; Variable-frequency; VAPOR INJECTION; PERFORMANCE; SYSTEM; EXCHANGER; TEMPERATURE; OPTIMIZATION; GROWTH;

D O I：

10.1016/j.renene.2020.07.087

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

During experiments on investigating the application feasibility of variable-frequency air source heat pump with vapor injection (ASHPVI) in severe cold region, it was found its frosting performance varied significantly from that in former investigations, e.g. in a severe frosting condition (0 degrees C, 80%), the experimental unit was frost-free. To investigate the frosting characteristics of variable-frequency ASHPVI for space heating in severe cold region, a test rig was built and used to supply heating for a lab in two heating seasons. A new frosting map was developed through summarizing its running performance under frosting condition. Results showed the frosting map of variable-frequency ASHPVI was affected by heating load. Owing to the consideration of heating load, the critical relative humidity decreased from 80.60% to 62.75% when outdoor temperature (OT) dropped from 1.0 degrees C to -26.5 degrees C, opposite to the change trend in former investigations. Besides, compared with values obtained in cold region, the upper and lower limits of OT of frosting region in severe cold region were both lower, and its critical relative humidity was higher. Moreover, the highest frosting speed appeared at OT of approximately -10 degrees C in severe cold region, but not at 0 degrees C as previously thought. (C) 2020 Elsevier Ltd. All rights reserved.

引用

页码：184 / 199

页数：16

共 45 条

[41] An experimental study of frost distribution and growth on finned tube heat exchangers used in air source heat pump units [J].

Zhang, Long ;

Jiang, Yiqiang ;

Dong, Jiankai ;

Yao, Yang ;

Deng, Shiming .

APPLIED THERMAL ENGINEERING, 2018, 132 :38-51

[42] Investigation on the performance of ASHP heating system using frequency-conversion technique based on a temperature and hydraulic-balance control strategy [J].

Zhou, Chaohui ;

Ni, Long ;

Wang, Jun ;

Yao, Yang .

RENEWABLE ENERGY, 2020, 147 :141-154

[43] Air-source heat pump heating system with a new temperature and hydraulic-balance control strategy: A field experiment in a teaching building [J].

Zhou, Chaohui ;

Ni, Long ;

Li, Jun ;

Lin, Zeri ;

Wang, Jun ;

Fu, Xuhui ;

Yao, Yang .

RENEWABLE ENERGY, 2019, 141 :148-161

[44] Developing a new frosting map to guide defrosting control for air-source heat pump units [J].

Zhu, J. H. ;

Sun, Y. Y. ;

Wang, W. ;

Deng, S. M. ;

Ge, Y. J. ;

Li, L. T. .

APPLIED THERMAL ENGINEERING, 2015, 90 :782-791

[45] A novel Temperature-Humidity-Time defrosting control method based on a frosting map for air-source heat pumps [J].

Zhu, Jiahe ;

Sun, Yuying ;

Wang, Wei ;

Ge, Yijing ;

Li, Lintao ;

Liu, Jingdong .

INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID, 2015, 54 :45-54

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