skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Base technology Stirling engine military applications assessment. Final technical report, 1 June 30-September 1983

Abstract

The design of an advanced Stirling engine is considered for potential use in Air Force mobile electric power generator sets. The prospects for acceptable reliability appears good due to new approaches to recognized Stirling problem areas; sealing, heater head and control. The present design appears suitable for a 30kW set, but Air Force needs would be best suited by development of a 60kW unit. Standardization would be facilitated by using the 60kW Stirling engine and associated auxiliaries in a 30kW set. Final design drawings have been completed in the 30kW engine but construction and tests are required to establish that both design criteria for the engine and mobile power requirements are met. Originator-supplied keywords include: Heat pipe, and Combustor control.

Authors:
Publication Date:
Research Org.:
Argonne National Lab., IL (USA)
OSTI Identifier:
6177824
Report Number(s):
AD-A-147087/1/XAB
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; ELECTRIC GENERATORS; STIRLING ENGINES; TECHNOLOGY ASSESSMENT; COMBUSTORS; CONTROL SYSTEMS; HEAT PIPES; ENGINES; HEAT ENGINES; 330201* - External Combustion Engines- Stirling Cycle

Citation Formats

Daley, J.G. Base technology Stirling engine military applications assessment. Final technical report, 1 June 30-September 1983. United States: N. p., 1983. Web.
Daley, J.G. Base technology Stirling engine military applications assessment. Final technical report, 1 June 30-September 1983. United States.
Daley, J.G. 1983. "Base technology Stirling engine military applications assessment. Final technical report, 1 June 30-September 1983". United States. doi:.
@article{osti_6177824,
title = {Base technology Stirling engine military applications assessment. Final technical report, 1 June 30-September 1983},
author = {Daley, J.G.},
abstractNote = {The design of an advanced Stirling engine is considered for potential use in Air Force mobile electric power generator sets. The prospects for acceptable reliability appears good due to new approaches to recognized Stirling problem areas; sealing, heater head and control. The present design appears suitable for a 30kW set, but Air Force needs would be best suited by development of a 60kW unit. Standardization would be facilitated by using the 60kW Stirling engine and associated auxiliaries in a 30kW set. Final design drawings have been completed in the 30kW engine but construction and tests are required to establish that both design criteria for the engine and mobile power requirements are met. Originator-supplied keywords include: Heat pipe, and Combustor control.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 1983,
month =
}

Technical Report:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that may hold this item. Keep in mind that many technical reports are not cataloged in WorldCat.

Save / Share:
  • This paper reports on the potential military applications of the Stirling engine. In the applications considered here, the major advantages cited for the Stirling engine are multifuel capability, efficiency, and low noise levels. These potential advantages are small compared to current diesels. Diesels are already able to burn broadcut fuels, have high efficiency, and can be adequately muffled. Their major disadvantages are size, weight, and cost. These disadvantages are only severe in vehicular and mobile-power applications where the competition is open-cycle internal combustion engines (diesel, spark-ignition, or turbine). In underwater and space-power applications where closed-cycle engines are a necessity, themore » use of Stirling engines shows more promise.« less
  • This study assesses the applicability of oil cleaning technology to industrial boilers and is one of a series of technology assessment reports to aid in determining the technological basis for a New Source Performance Standard for Industrial Boilers. The status of development and performance of alternative oil cleaning techniques were assessed and the cost, energy, and environmental impacts of the most promising processes were identified.
  • The report gives results of an evaluation of fabric filtration on Boiler 108. The operating characteristics of the reverse-air baghouse controlling emissions from Boiler 108 were determined via data (collected by Navy personnel) on boiler and baghouse operation (hours of operation, coal feed rate, steam load, air load, baghouse inlet temperature, and baghouse module pressure drop), and periodic inspection and testing of selected bags. Tests of physical characteristics of the fiberglass bags revealed normal deterioration of fabric strength with increasing time of exposure to flue gas. Fill fibers were more affected than warp fibers. A long plateau in bag lifemore » was observed; fabric characteristics after 1500 hours of actual operation and after 7600 hours did not differ greatly. Statistical analyses of fabric test data indicated effects on fabric due both to length of exposure time and position in the baghouse, and interaction of those effects. Other analyses indicated that exposure time was the dominant effect. Operating costs for reverse-air and induced-draft fans were calculated for 1983, 1984, and 1985.« less
  • The overall objective of this project is to create a prototype reference data system, built around the ASPEN process simulation system, which will include those thermophysical properties of coal liquids necessary to calculate vapor-liquid equilibrium (VLE) and perform heat and material balance (HMB) calculations. An important emphasis of the project is applicability to coal liquids from the SRC-II process. The properties that are most often needed for VLE and HMB calculations are K-values, enthalpies and densities of both vapor and liquid mixtures. Vapor and liquid enthalpies are generally expressed in terms of departures from the ideal gas enthalpy at themore » same temperature. This means that a model is required for the calculation of the ideal gas heat capacities of all components present, and that other models are needed to estimate the departures as functions of temperature, pressure and composition. K-values are generally expressed in terms of liquid and vapor fugacities. Models are therefore also required to estimate these quantities as functions of temperature, pressure and composition. A variety of models and correlations are available for the calculation of the required thermophysical properties in the ASPEN process simulation system. All models and correlations of the types mentioned depend on parameters which are characteristic of the components present in a mixture. For example, the RKS equation of state uses three pure component parameters - critical temperature, critical pressure and acentric factor - and one binary interaction parameter for each pair of components.« less
  • The analysis, design, fabrication, and experimental testing of a twin-spool turbocharger was conducted for the Cummins NTC-475 diesel engine. Two major designs of the twin-spool turbocharger were fabricated and tested: 1) Compact design, concentric shaft-to-shaft bearing coupled turbocharger incorporating a) split 40/sup 0/ backswept impeller, b) split AiResearch Ti8A85 turbine rotor, c) adjustable vaned compressor diffuser, and d) nozzleless AiResearch turbine (volute) housing; and 2) Independently supported (shafts dynamically de-coupled) concentric shaft design incorporating a) separate structures for bearing support of the inner shaft b) split 25/sup 0/ backswept compressor impeller, c) split T18A40/Ti8A85 turbine rotor/exducer combination, and d) dividedmore » volute, adjustable-nozzle turbine housing. While bench tests were performed on both designs, engine testing was successfully carried out using the latter designs. Tests indicated that the second twin-spool configuration gave performance comparable to the originally equipped two-stage turbocharger system of the NTC-475 diesel engine (rated BHP of 425 hp at 2100 RPM, best BSFC of 0.35 at engine lug) with the added benefit of extending engine lugging range to 1200 RPM (from 1300 RPM, as originally equipped). This configuration gave peak compressor efficiency of about 75% and peak turbine efficiency of about 80%, both attributed to the reduction inducer angle of attack and exducer exit swirl angle made possible by the twin-spool concept.« less