Open Access iconOpen Access

ARTICLE

crossmark

Field Investigation and Comparison Analysis of Low-Grade Heat Pump Technologies in Building Space Heating Projects

Yanxue Li1,*, Weijun Gao1,2, Xiaoyi Zhang2, Wenya Xu1, Yingjun Ruan3, Yinzhong Wang4

1 Innovation Institute for Sustainable Maritime Architecture Research and Technology, Qingdao University of Technology, Qingdao, 266033, China
2 Faculty of Environmental Engineering, The University of Kitakyushu, Kitakyushu, 808-0135, Japan
3 Institute of Mechanical Engineering, Tongji University, Shanghai, 200092, China
4 Dongying Electric Power Company, Dongying, 257000, China

* Corresponding Author: Yanxue Li. Email: email

(This article belongs to the Special Issue: Advanced Heat Pump Technologies for Renewable Energy Utilization)

Energy Engineering 2022, 119(1), 63-81. https://doi.org/10.32604/EE.2022.016209

Abstract

The building sector contributes a large ratio of final energy consumption, and improving building energy efficiency is expected to play a significant role in mitigating its carbon dioxide emission. Herein, we collected the on-site measurement data to investigate the techno-economic performances of different heat pump types that exist in building space heating projects in Qingdao, China. An in-depth analysis revealed the temperature variations of measured low-grade heat sources over the whole heating supply period, and urban sewage water shows high stable heat energy quality compared with seawater and geothermal heat resources. Operational behaviors including cycling inlet and outlet temperature of the selected heat pumps were illustrated, and analysis evaluated detailed effects of operational parameters on energy efficiency performances. Then the relationship between COPs distributions of heat pumps and operational conditions was examined further, and the positive effect of the rising temperature of heat sources on energy efficiency improvement of heat pump is highlighted when the heating supply temperature is higher. Furthermore, we analyzed the economic and carbon emission performance of the heat pump system, and results show that electricity price plays a vital role in the lifespan energy cost saving potential, and the heat pump could serve as a promising approach in reducing CO2 related to the building space heating. Finally, we recommended suggestions for improving the overall energy efficiency and cost competitiveness of decentralized heat pump systems for building space heating.

Keywords


Cite This Article

APA Style
Li, Y., Gao, W., Zhang, X., Xu, W., Ruan, Y. et al. (2022). Field investigation and comparison analysis of low-grade heat pump technologies in building space heating projects. Energy Engineering, 119(1), 63-81. https://doi.org/10.32604/EE.2022.016209
Vancouver Style
Li Y, Gao W, Zhang X, Xu W, Ruan Y, Wang Y. Field investigation and comparison analysis of low-grade heat pump technologies in building space heating projects. Energ Eng. 2022;119(1):63-81 https://doi.org/10.32604/EE.2022.016209
IEEE Style
Y. Li, W. Gao, X. Zhang, W. Xu, Y. Ruan, and Y. Wang "Field Investigation and Comparison Analysis of Low-Grade Heat Pump Technologies in Building Space Heating Projects," Energ. Eng., vol. 119, no. 1, pp. 63-81. 2022. https://doi.org/10.32604/EE.2022.016209



cc This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
  • 1622

    View

  • 823

    Download

  • 0

    Like

Share Link