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Study on Bath Water Energy Loss of Campus Dormitory Air-Source Heat-Pump Water Heater

  • Liugen LvEmail author
  • Tao Jia
  • Wenlian Zhang
  • Qianqian Jia
  • Jin Lv
  • Zhenzhen Jia
Conference paper
  • 235 Downloads
Part of the Environmental Science and Engineering book series (ESE)

Abstract

South dorms use widely hot water to bath, which is produced by air-source heat-pump water heater. In this study, taking dormitory air-source heat-pump water heater system as the object, the air temperature and wall temperature were tested to get the bath compartment thermal environment, and the outlet temperature and hot water temperature were recorded to obtain the bath water energy loss. The results show that the heat loss of bath hot water has a significant effect on the thermal environment of the compartment and improves the thermal comfort. The average rate of heat loss during the period when the bath hot water touching the body from the outlet to the ground is about 29%, the average heat loss rate of the hot water flowing from the ground to the floor drain is about 71%, and about 64% of the bath hot water is discharged directly into the floor drain. It has practical significance to improve the heat utilization efficiency of bath water.

Keywords

Southern region Air-source heat-pump water heater Bath thermal environment Bath energy loss 

Notes

Acknowledgements

The project is supported by Zhejiang Provincial Natural Science Foundation of China under Grant No. LY18E080022 and Jiaxing University Research Foundation under Grant No. 70516003.

Informed Consent Informed consent was obtained from all individual participants included in the study.

Permissions Appropriate permissions from house owners/responsible authorities were obtained for study in the investigation of university hot water supply system.

References

  1. 1.
    Shan, H., Yang, L.: Application and analysis of air source heat pump hot water system of a student apartment in Chongqing. Refrig. Air Conditioning 28(1), 46–48 (2014)Google Scholar
  2. 2.
    Zhang, J., et al.: System optimization and experimental research on air source heat pump water heater. Appl. Therm. Eng. 27(5), 1029–1035 (2007)CrossRefGoogle Scholar
  3. 3.
    Chen, Z., et al.: Performance analysis of air-water dual source heat pump water heater with heat recovery. China Technol. Sci. 55(8), 2148–2156 (2012)CrossRefGoogle Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2020

Authors and Affiliations

  • Liugen Lv
    • 1
    Email author
  • Tao Jia
    • 1
  • Wenlian Zhang
    • 1
  • Qianqian Jia
    • 1
  • Jin Lv
    • 1
  • Zhenzhen Jia
    • 1
  1. 1.School of Civil Engineering and ArchitectureJiaxing UniversityJiaxingChina

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