Ramgen Supersonic Shock Wave Compression & Engine Tech

Ramgen Supersonic Shock Wave Compression and Engine Technology
Project No.: FC26-06NT42651 & FE0000493

Photograph of a Rampressor Rotor

Photograph of a Rampressor Rotor

Ramgen Power Systems is developing a supersonic shock wave compression technology, similar in concept to an aircraft’s ramjet engine, for use in a stationary compressor. The objective of the project is to design unique stationary power plant compressor products (air and carbon dioxide [CO2]) based upon aerospace shock wave compression theory. Ramgen’s compressor design, known as a Rampressor, features a rotating disk that operates at high peripheral speeds to generate shock waves that compress the CO2. Compared to conventional compressor technologies, shock compression offers several potential advantages: high compression efficiency; high single-stage compression ratios; opportunity for waste heat recovery; and low capital cost. For example, Ramgen's shock compression has the potential to develop compression ratios from 2.0 to 15.0 per stage with an associated adiabatic efficiency of 85 to 90 percent. For CO2 applications, Ramgen anticipates using a nominal two-stage 100:1 compression ratio, featuring a matched pair of 10:1 compression stages with an intercooler located between the stages. If successful, a single stage smaller footprint compressor with competitive operating efficiency and a reduced cost will be evolved. An Integrated Supersonic Component (ISC) engine is being simultaneously developed from proof-of-concept to field demonstration. The ISC engine portion utilizes and supports the development of the supersonic shock wave CO2 compression technology.

Related Papers and Publications:


  • For further information on this project, contact the NETL Project Manager, Robin Ames.