Abstract
A Dual-Purpose Underground Thermal Battery (DPUTB) innovatively integrates a ground heat exchanger with underground thermal energy storage. The DPUTB can be integrated with an Electric-Driven Heat Pump (EDHP) to enable more flexible electric load for meeting the thermal demands of a building (e.g., space cooling and space heating). A one-dimensional numerical model of the DPUTB is developed and validated against measured performance data of a small-scale DPUTB prototype. The validated DPUTB model is integrated with a heat pump model and a building energy simulation model to predict the load shifting performance and energy consumption of an integrated EDHP and DPUTB system. Preliminary simulation results indicate that the integrated system can flatten the electric load profile of a typical residential building and reduce the electric demand during peak hours by 37% on a typical summer day. In addition, the integrated EDHP and DPUTB system also reduces the daily power consumption of the building by 11% compared with a conventional residential space heating and cooling system.
| Original language | English |
|---|---|
| Title of host publication | Geothermal |
| Subtitle of host publication | Green Energy for the Long Run - Geothermal Resources Council 2019 Annual Meeting, GRC 2019 |
| Publisher | Geothermal Resources Council |
| Pages | 19-35 |
| Number of pages | 17 |
| ISBN (Electronic) | 0934412243, 9781713806141 |
| State | Published - 2019 |
| Event | Geothermal Resources Council 2019 Annual Meeting - Geothermal: Green Energy for the Long Run, GRC 2019 - Palm Springs, United States Duration: Sep 15 2019 → Sep 18 2019 |
Publication series
| Name | Transactions - Geothermal Resources Council |
|---|---|
| Volume | 43 |
| ISSN (Print) | 0193-5933 |
Conference
| Conference | Geothermal Resources Council 2019 Annual Meeting - Geothermal: Green Energy for the Long Run, GRC 2019 |
|---|---|
| Country/Territory | United States |
| City | Palm Springs |
| Period | 09/15/19 → 09/18/19 |
Funding
This manuscript has been authored by UT-Battelle, LLC under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan). 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 and Joshua Mengers, U.S. Department of Energy Geothermal Technologies Office. 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 and Joshua Mengers, U.S. Department of Energy Geothermal Technologies Office.
Keywords
- Demand side management
- Dual-purpose underground thermal battery
- Flexible load
- Heat pump
- Modeling and simulation
- Renewable power
- Thermal energy storage