Advanced Stirling Power Generation System for CHP
West Virginia University Research Corporation (WVURC) and their partner, Infinia Technology Corporation, propose to demonstrate an advanced Stirling power generation system for residential CHP applications. A Stirling engine uses a working gas housed in a sealed environment, in this case the working gas is helium. When heated by the natural gas-fueled burner, the helium expands causing a piston to move and interact with a linear alternator to produce electricity. As the gas cools and contracts, the process resets before repeating again. Advanced Stirling engines endeavor to carefully manage heat inside the system to make the most efficient use of the natural gas energy. This project makes extensive use of additive manufacturing i.e. constructing components one layer at a time - similar to 3D printing. They propose using additive manufacturing because building the system as one piece minimizes interfacial heat losses and improves heat transfer, leading to increased efficiency.
If successful, WVURC’s project will facilitate development and commercialization of economical, efficient, and durable CHP systems for residential use. These advancements support progress toward ARPA-E’s overall goals as follows:
Innovations developed in this project could help households and businesses become more energy self-reliant and less susceptible to energy-related outages through distributed, local generation of power and heat.
Widespread adoption of high-efficiency residential CHP systems could decrease overall primary energy consumption and therefore reduce CO2 emissions associated with electricity generation by up to 10%.
Cost-effective natural gas-fueled residential CHP systems could offer consumers lower electricity and heating bills.