Load Shifting Assessment of Residential Heat Pump System in Japan

Xueyuan Zhao, Weijun Gao, Yanxue Li, Yoshiaki Ushifusa

With the economic growth and increasing requirement of indoor thermal comfort, the load of building sector presents a greater variability.This paper aims at analyzing the energy consumption characteristics and influencing factors of the residential heat pump system. Firstly, we selected residential households as investigated objective in Kitakyushu, Japan, and compared the energy saving performances of heat supply systems between heat pump and natural gas boiler. The results were based on real measured residential load during winter period, and calculated the cost saving performance of residential heat pump system compared with traditional natural gas boiler. We also did a survey of residential occupation behavior for the 12 selected residential customers. The result indicated that there was low relationship between power consumption and occupation hours, and the number of family members had a significant impact on the power consumption. The results indicate that residential heat pump system presented promising energy saving and cost reduction potential.

Keywords

Heat pump system; Eco-cute;Economy analysis

References

Drysdale, B., Wu, J., & Jenkins, N. (2015). Flexible demand in the GB domestic electricity sector in 2030. Applied Energy, 139, 281-290.

Petrović, S. N., & Karlsson, K. B. (2016). Residential heat pumps in the future Danish energy system. Energy, 114, 787-797.

Love, J., Smith, A. Z., Watson, S., Oikonomou, E., Summerfield, A., Gleeson, C., ... & Stone, A. (2017). The addition of heat pump electricity load profiles to GB electricity demand: Evidence from a heat pump field trial. Applied Energy, 204, 332-342.

Poredoš, P., Čož, T., Kitanovski, A., & Poredoš, A. (2017). Thermo-economic and primary-energy-factor assessment based on the field test of an air-to-water heat pump. International Journal of Refrigeration, 76, 19-28.

Popa, V., Ion, I., & Popa, C. L. (2016). Thermo-economic analysis of an air-to-water heat pump. Energy Procedia, 85, 408-415.

Kyuden Electrical Company. (n.d.). Data book in Kyushu. Retrieved August 2018 from http://www.kyuden.co.jp/var/rev0/0149/5535/data_book_2018_all.pdf.

Zhang, J. F., Qin, Y., & Wang, C. C. (2015). Review on CO2 heat pump water heater for residential use in Japan. Renewable and Sustainable Energy Reviews, 50, 1383-1391.

Copyright (c) 2019 International Journal of Environmental Science & Sustainable Development Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.