TY - JOUR
T1 - Techno-economic analysis on frosting/defrosting operations for an air source heat pump unit with an optimized multi-circuit outdoor coil
AU - Song, Mengjie
AU - Tso, Chiyan
AU - Chao, Christopher Yuhang
AU - Wu, Chili
N1 - Funding Information:
The authors acknowledge the financial support from the National Natural Science Foundation of China (No. 51606044 ), Natural Science Foundation of Guangdong Province (No. 2017A030313300 ), and Science and Technology Planning Project of Guangdong Province, China (No. 2014B090903007 ) for the work reported in this paper. The first author is also grateful for the financial support of the Japan Society for the Promotion of Science (JSPS).
Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2018/5/1
Y1 - 2018/5/1
N2 - Air source heat pump (ASHP) units are used in applications around the world. After optimizing the multi-circuit outdoor coil by installing water collecting trays between circuits and adjusting the refrigerant distribution by using valves located at each circuit, system frosting/defrosting operation performances could be effectively improved. Before practical industry-scale application of trays and valves, their economic performances should be evaluated. However, in current literature, techno-economic analysis on operation performance of ASHP units is rare, which limits the development of innovative technologies. Therefore, a techno-economic analysis on frosting/defrosting operations is carried out in this study. Firstly, the frosting/defrosting experiments are introduced, followed by a series of assumptions and calculations. Then, the economic analysis results are provided in detail. Compared with a traditional ASHP unit, the total running costs of the modified unit in the heating season could save as much as 3681.75 CNY, or 10.33%, and the total cost decreased by 3516.75 CNY, or 4.67%, over 15 years of service life. The payback period of the additional initial cost is less than 8 months. Contribution of this work plays an important role in the evaluation and application of new technologies in the HVAC field.
AB - Air source heat pump (ASHP) units are used in applications around the world. After optimizing the multi-circuit outdoor coil by installing water collecting trays between circuits and adjusting the refrigerant distribution by using valves located at each circuit, system frosting/defrosting operation performances could be effectively improved. Before practical industry-scale application of trays and valves, their economic performances should be evaluated. However, in current literature, techno-economic analysis on operation performance of ASHP units is rare, which limits the development of innovative technologies. Therefore, a techno-economic analysis on frosting/defrosting operations is carried out in this study. Firstly, the frosting/defrosting experiments are introduced, followed by a series of assumptions and calculations. Then, the economic analysis results are provided in detail. Compared with a traditional ASHP unit, the total running costs of the modified unit in the heating season could save as much as 3681.75 CNY, or 10.33%, and the total cost decreased by 3516.75 CNY, or 4.67%, over 15 years of service life. The payback period of the additional initial cost is less than 8 months. Contribution of this work plays an important role in the evaluation and application of new technologies in the HVAC field.
KW - Air source heat pump
KW - Frosting/defrosting operation
KW - Multi-circuit outdoor coil
KW - Payback period
KW - Techno-economic analysis
UR - http://www.scopus.com/inward/record.url?scp=85042227589&partnerID=8YFLogxK
U2 - 10.1016/j.enbuild.2018.01.060
DO - 10.1016/j.enbuild.2018.01.060
M3 - Journal article
AN - SCOPUS:85042227589
SN - 0378-7788
VL - 166
SP - 165
EP - 177
JO - Energy and Buildings
JF - Energy and Buildings
ER -