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Coupled Solar Geothermal Storage System (CSGSS) for Single Residences and District Heated Communities

Award Information
Agency: Department of Energy
Branch: N/A
Contract: DESC0020709
Agency Tracking Number: 0000251865
Amount: $199,916.85
Phase: Phase I
Program: SBIR
Solicitation Topic Code: 10a
Solicitation Number: DEFOA0002146
Solicitation Year: 2020
Award Year: 2020
Award Start Date (Proposal Award Date): 2020-06-29
Award End Date (Contract End Date): 2021-06-28
Small Business Information
Rockledge, FL 32955
United States
DUNS: 175302579
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Daniel Kromer
 (321) 305-5353
Business Contact
 Michael Rizzo
Phone: (321) 631-3550
Research Institution

Concerns about carbon emissions and global warming have increased interest in nonfossil-fuel heating options. Air-source heat pumps (ASHPs) offer an electrical heating option. However, on colder days, when heating demands are highest, both the efficiency and heating capacity of ASHPs decrease significantly. This places significant stress on the electrical grid, already stressed by increasing use of intermittent renewable energy source. Geothermal heat pumps (GHP) use the ground, with relatively constant temperature, as a heat source and are therefore are able to provide heat efficiently and with relatively low electrical usage, regardless of weather conditions. However, GHPs both require significant up-front investment and place additional electrical demand on the grid compared with fossil-fuel heating options. Mainstream engineering corporation (MEC) is proposing a coupled solar geothermal storage system (CSGSS) that will further reduce the electrical usage of GHPs, while also reducing the initial cost of the system. The CSGSS uses solar-thermal collectors to both provide domestic hot water and heat the ground, thereby increasing the efficiency of the heat pump and providing nearly carbon/electrical free hot water. From the prospect of the individual home owners, the CSGSS will decrease the initial cost of ownership for both GHPs and solar-thermal hot water systems, while also reducing monthly electrical bills. This will increase economic incentive for these two technologies, resulting in reduced carbon emissions, with minimal impact on the electrical grid. Additionally, the CSGSS system increase the efficiency of both systems beyond the benefit of the two technologies individually, further decreasing overall electrical demand.

* Information listed above is at the time of submission. *

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