Comparison between a residential dual source heat pump system integrated with thermal storage and an air source heat pump system at cold climate

Liang Shi, Xiaobing Liu, Ming Qu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

This study investigates the performance of a dual-source (air and ground) heat pump system integrated with novel thermal energy storage using a high-fidelity computer simulation model developed with the Modelica program. A rule-based control strategy was developed to shift the electric demand of a typical single-family house using the integrated system. For comparison, a conventional air-source heat pump system serving the same building was also simulated. Simulation results indicate that the integrated system can shift over 93% of the electricity consumption for space heating and space cooling from peak to off-peak period on a daily basis. In addition, the annual electricity consumption can be reduced by 22% compared with the conventional air source heat pump system. Furthermore, when a time-of-use tariff is used, the electricity cost is cut by 48% for meeting the same heating and cooling loads of the building.

Original languageEnglish
Title of host publicationUsing the Earth to Save the Earth - 2021 Geothermal Rising Conference, GRC 2021
PublisherGeothermal Resources Council
Pages1085-1096
Number of pages12
ISBN (Electronic)0934412278
StatePublished - 2021
Event2021 Geothermal Rising Conference: Using the Earth to Save the Earth, GRC 2021 - San Diego, United States
Duration: Oct 3 2021Oct 6 2021

Publication series

NameTransactions - Geothermal Resources Council
Volume45
ISSN (Print)0193-5933

Conference

Conference2021 Geothermal Rising Conference: Using the Earth to Save the Earth, GRC 2021
Country/TerritoryUnited States
CitySan Diego
Period10/3/2110/6/21

Funding

This work was sponsored by the U. S. Department of Energy's Geothermal Technologies Office under Contract No. DE-AC05-00OR22725 with UT-Battelle, LLC. The authors would also like to acknowledge Ms. Arlene Anderson, U.S. Department of Energy Geothermal Technologies Office, to guide this study.

Keywords

  • Air-source heat pump
  • Groud source heat pump
  • Load shifting
  • Thermal storage

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