Power Generation Publications

Fission Surface Power Final Report -Phase 1
J. Gary Wood, Andrew Buffalino, Ezekiel Holliday, L. B. Penswick, David Gedeon (2010) Phase 1 final report on the successful Fission Surface Power system for NASA.

Diesel Fuel-to-Electric Energy Conversion Using Compact, Portable, Stirling Engine-Based Systems
James Huth, Josh Collins (2007) Sunpower, Inc., Yale University and Precision Combustion, Inc. (PCI) have developed a wearable, JP8-fueled, 35 We free-piston Stirling engine (FPSE)-based soldier power source with funding support from DARPA Palm Power. The unit exhibits 21% gross fuel-to-electric conversion efficiency.

Continued Development of the Advanced Stirling Convertor (ASC)
J. Gary Wood, Kyle Wilson, Andrew Buffalino, Wayne A. Wong, Patrick Frye, Dan Matejczyk, L. B. Penswick (2007) Progress report on Advanced Stirling Convertor (ASC) Program in Phase III. Continued development of the high temperature (~850ºC) convertor using existing materials and fabrication techniques in the hot portions. Materials, methods of design and construction, testing.

Specific Power Estimations for Free-Piston Stirling Engines
Seon-Yong Kim, David M. Berchowitz(2006) Preliminary designs and specific power estimates of high efficiency, free-piston Stirling machines for 5 kWe , 10 kWe and 25 kWe outputs.

Advanced Stirling Convertor Upgrade
J. Gary Wood, Cliff Carroll, Dan Matejczyk, L.B. Penswick, E. Soendker (2006)

Commercialization Status of Free-piston Stirling Machines
Neill W. Lane (2006) Description of Sunpower’s beta type free-piston machine technology, its attributes relative to kinematic and other free-piston machines, and its commercialization status.

Advanced 80 We Stirling Convertor Development Progress
J. Gary Wood, Cliff Carroll, L.B. Penswick (2005) Progress report on Advanced Stirling Convertor (ASC) Program in Phase I and II. Efficiency improvement of ASC-1 Convertor compared to Frequency Test Bed, initial work on reliability, heater head materials and design, thermodynamic losses, and requirements for the controller.

Development of the Sunpower 35 We Free-Piston Stirling Convertor
J. Gary Wood, Neill W. Lane (2005) Progress report on Advanced Stirling Convertor (ASC) Program in Phase I. Performance analysis of the Frequency Test Bed, initial investigation of thermodynamic losses, design of ASC, and outline of projected reliability.

Advanced 80 We Stirling Convertor Phase II Development Progress
J. Gary Wood, Cliff Carroll, Dan Matejczyk, L.B. Penswick (2005) Progress report on Advanced Stirling Convertor (ASC) Program in Phase I and II. Efficiency improvement of ASC-1 Convertor compared to Frequency Test Bed, initial work on reliability, heater head materials and design, thermodynamic losses, and requirements for the controller.

Control Electronics for Palm Power 35W Free-Piston Stirling Engine
Ezekiel Holliday, Douglas E. Keiter (2005) Configuration requirements and performance test results of a high-efficiency, low-mass, soldier-wearable power system to replace batteries.

Performance Characterization of Sunpower Free-Piston Stirling Engines
Seon-Yong Kim, James Huth, James G. Wood (2005) Thermodynamic performance characterization of 35 We, 80 We and 1.1 kWe engines.

Advanced Small Free-Piston Stirling Convertors for Space Power Applications
J. Gary Wood, Neill W. Lane (2004) Results of initial power efficiency tests for a 35 We convertor and overview of development of Advanced Stirling Convertor (ASC).

Progress Update on the Sunpower 35 We Stirling Convertor
J. Gary Wood, Neill W. Lane (2004) Progress report on hardware development and performance improvement of a 35 We convertor and description of dual-opposed convertors.

Advanced Stirling Convertor Program Update
J. Gary Wood, Cliff Carroll (2004) Overview of the Advanced Stirling Convertor (ASC) development program, analysis of early performance testing of the Frequency Test Bed, and configuration requirements for ASC.

Free Piston Stirling Machine Commercialization Status at Sunpower
Neill W. Lane, J. Gary Wood, Reuven Z. Unger (2003) Description of development status, marketing strategies, and competitive advantages of Stirling engines, Stirling cryocoolers and pulse tubes.

Advanced 35 W Free-Piston Stirling Engine for Space Power Applications
J. Gary Wood, Neill W. Lane (2003) Design description and initial investigation of power efficiency and reliability of a small engine designed for space power applications.

Status of Free Piston Stirling Technology at Sunpower, Inc
J. Gary Wood (2003) Overview of the performance and specific powers of Sunpower’s machines, Sunpower’s design topology, and current engine research.

Preliminary Design of a 7 kWe Free-Piston Stirling Engine with rotary generator output
G.W. Wood, N. W. Lane, W.T. Beale (2001) Preliminary design for a linear motion free piston Stirling engine/blower coupled to a rotary turbine/generator.

Micro-Scale Biomass Power
Bowman, L., Lane, N.W. (1999) Description of a line of small modular biopower products for use in homes and small businesses.

A Biomass-Fired 1 kWe Stirling Engine Generator and Its Applications in South Africa
Lane, N.W., Beale, W.T. (1999) Description of biomass-fired Stirling engine generator (“Biowatt TM”) for 1 kW electric output and 4 kW heat. Potential for added value for local fuels, and rural electrification.

Micro-Biomass Electric Power Generation
Lane, N.W, and Beale, W.T. (1997) Potential for generating biomass electric power using single or ganged free-piston Stirling engine gensets.

Free-Piston Stirling Design Features
Lane, N.W, and Beale, W.T. (1997) Review of current design features of free-piston Stirling engines of 3.0 and 1.1 kW output.

Stirling Engines for Gas Fired Micro-Cogen and Cooling
Lane, N.W., Beale, W.T. (1996) Design and performance of free-piston Stirling engine-alternators particularly suited for use as natural gas fired micro-cogen and cooling devices.

A Free-Piston Stirling Engine-Alternator for Solar Electric Power
Lane, N.W. and Beale, W.T. (1996) Adaptation of an existing 2.5 propane-fired Stirling engine for an opposed, 5kW design for solar power.

A Free-Piston Stirling Engine Using Rough Biomass
Beale, W.T. (1995) Description of the design configurations for electric power generation using biomass or other sustainable energy sources using Stirling engines.

A 5kW Electric Free-Piston Stirling Engine
Lane, N.W.; Beale, W.T. (1995) Design of a 5 kW electric, horizontally opposed, free-piston Stirling engine.

Free-Piston Stirling Engines for Domestic Cogeneration and Biomass Energy Conversion
Beale, W.T. (1995) Design and performance of Stirling engines near-term commercial production 1 to 10 kW power for natural gas and biomass-fired domestic and light industrial cogeneration

Stirling Free-Piston On-Board Charger for Electric Vehicles
Chen, G.; Beale, W.; Berchowitz, D.(1993) Design and performance of free-piston Stirling engine-alternators particularly suited for use as natural gas fired micro-cogen and cooling devices.

Small Stirling Free-Piston Engines for Cogeneration
Beale, W.; Chen, G. (1992) Description, characteristics, performance and applications of cogeneration system.

Development of a 3kW Free-Piston Stirling Engine with the Displacer Gas-Spring Partially Sprung to the Power Piston
Chen, G., McEntee, J. (1991) Description of a novel displacer drive in a 3kW Stirling engine.

Development of a High frequency Stirling Engine-Powered 3kW(e) Generator Set
Lane, N.W., Berchowitz, D.M. Shade, D., Karandikar, A.(1989) Advanced development of two opposed Stirling engines as a lightweight, quiet generator set.

Operational Characteristics of Free-Piston Stirling Engines
Berchowitz, D.M. (1988) Analysis of the effect of changes in Stirling engine operating parameters and possible control mechanisms.

Development and Performance of a 3kW(e) Air Charged Free-Piston Stirling Engine with Linear Alternator
Berchowitz, D.M.; Richter, M.; Shade, D. (1987) Efforts to develop a free-piston Stirling engine linear alternator combination for use in a quiet, Diesel fueled portable 3 kW generator set.

Solar Powered Stirling Engines and their Potential Uses in Developing Countries
Beale, W.T. (1986) Exploration of how and why low-cost Stirling machines are applicable to supplying power needs from alternative energy sources in non-industrialized areas.

Assembly drawing of “SPIKE”
Sunpower, Inc. (1984) Cutaway labelled drawing of a 1kW(e) engine.

Development and Performance of a 3 kW(e) Air Charged Free-Piston Stirling Engine with Linear Alternator
Berchowitz, D.M.; Richter, M.; Shade, D. (1984) Description of a project to build a free-piston Stirling engine/linear alternator as a quiet, portable diesel-fired generator set.

Stirling Engines in Developing Countries
Berchowitz, D.M. (1984) Appraisal of Stirling engines as a less costly replacement for internal combustion power sources.

The Development of Stirling Engines at Sunpower Inc.
Beale, W.T. (1983) Description of machines built at Sunpower from 1974 to 1983.

The Free Piston Stirling Engine: 20 Years of Development
Beale, W.T. (1983) Early development efforts of free-piston Stirling engines at Sunpower.

Design of a Low Pressure Air Engine for Third World Use
Wood, J.G., Chagnot, B.J., Richter, M. (1982) Description of a free-piston Stirling engine designed to run on local biomass fuel.

Scaling Rules for Stirling Engines
Gedeon, D.R. (1981) Formulas developed to scale a Stirling engine design for such properties as size, frequency and power.

Free Piston Stirling Engines Increase Solar/Thermal Efficiency
Taylor, G (1979) Advantageous features of free-piston Stirling engine over other engines.

The Optimization of Stirling Cycle Machines
Gedeon, D.R. (1978) Using computer simulations to predict performance of Stirling machines.

60-Cycle AC from Sunshine, Solar Stirling Engine
Lindsley, E.F. (1978) Prospects of free-piston Stirling engines as an efficient solar power source.

Some Stirling Engine Designs for Solar Energy – Concepts, Analysis and Test Results
Beale, W.T. (1977) Labelled line drawings of five Sunpower free-piston Stirling engines.

Free Piston Stirling Engines – Some Model Tests and Simulations
Beale, W.T. (1969) Preliminary investigation of free-piston Stirling engines.
James Huth, Josh Collins (2007) Sunpower, Inc., Yale University and Precision Combustion, Inc. (PCI) have developed a wearable, JP8-fueled, 35 We free-piston Stirling engine (FPSE)-based soldier power source with funding support from DARPA Palm Power. The unit exhibits 21% gross fuel-to-electric conversion efficiency.