Comparison of conceptual designs for 25 kWe advanced Stirling conversion systems for dish electric applications

Two designs that were developed as part of the advanced Stirling conversion system (ASCS) project managed by NASA Lewis Research Center are described. Each design features a free-piston Stirling engine, a liquid metal heat pipe receiver, and a means to provide about 25 kW of electric power to a utility grid while meeting the US Department of Energy's long term performance and cost goals. An independent assessment showed that both designs are manufacturable.<<ETX>>