Analysis and Design of an Air-Cycle Microclimate Cooling DeviceSource: Journal of Energy Resources Technology:;1996:;volume( 118 ):;issue: 004::page 293Author:M. M. Rahman
DOI: 10.1115/1.2793876Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents an innovative concept of using air-cycle technology for the development of a microclimate cooling device for use by soldiers in the battlefield. The device is an integrated heat engine and heat pump which supplies air at a prescribed temperature and humidity for personal cooling of a soldier wearing protective ensembles, generates electrical energy to power communication equipment, and produces drinking water by condensing atmospheric moisture which may be very useful in desert warfare. It consists of a centrifugal compressor, two turbines or expanders, a combustion chamber, three heat exchangers, a water separator, and an electric generator. Atmospheric air is used as the working fluid in both the engine and cooling loops and diesel is used as the fuel for combustion. A detailed thermodynamic analysis and design optimization was performed. It was found that the system efficiency increases with operating pressure ratio, attains a maximum, and decreases with further increase of pressure ratio. The system efficiency was found to be also dependent on the air-fuel ratio, and the maximum efficiency was found to occur at a specific air-fuel ratio, for any given pressure ratio. The optimum operating condition determined from the thermodynamic analysis was used to outline a detailed design of the system.
keyword(s): Cooling , Design , Cycles , Pressure , Fuels , Water , Soldiers , System efficiency , Warfare , Engines , Compressors , Heat engines , Combustion chambers , Temperature , Combustion , Fluids , Diesel , Generators , Heat pumps , Heat exchangers , Optimization AND Turbines ,
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contributor author | M. M. Rahman | |
date accessioned | 2017-05-08T23:49:52Z | |
date available | 2017-05-08T23:49:52Z | |
date copyright | December, 1996 | |
date issued | 1996 | |
identifier issn | 0195-0738 | |
identifier other | JERTD2-26468#293_1.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/116810 | |
description abstract | This paper presents an innovative concept of using air-cycle technology for the development of a microclimate cooling device for use by soldiers in the battlefield. The device is an integrated heat engine and heat pump which supplies air at a prescribed temperature and humidity for personal cooling of a soldier wearing protective ensembles, generates electrical energy to power communication equipment, and produces drinking water by condensing atmospheric moisture which may be very useful in desert warfare. It consists of a centrifugal compressor, two turbines or expanders, a combustion chamber, three heat exchangers, a water separator, and an electric generator. Atmospheric air is used as the working fluid in both the engine and cooling loops and diesel is used as the fuel for combustion. A detailed thermodynamic analysis and design optimization was performed. It was found that the system efficiency increases with operating pressure ratio, attains a maximum, and decreases with further increase of pressure ratio. The system efficiency was found to be also dependent on the air-fuel ratio, and the maximum efficiency was found to occur at a specific air-fuel ratio, for any given pressure ratio. The optimum operating condition determined from the thermodynamic analysis was used to outline a detailed design of the system. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Analysis and Design of an Air-Cycle Microclimate Cooling Device | |
type | Journal Paper | |
journal volume | 118 | |
journal issue | 4 | |
journal title | Journal of Energy Resources Technology | |
identifier doi | 10.1115/1.2793876 | |
journal fristpage | 293 | |
journal lastpage | 299 | |
identifier eissn | 1528-8994 | |
keywords | Cooling | |
keywords | Design | |
keywords | Cycles | |
keywords | Pressure | |
keywords | Fuels | |
keywords | Water | |
keywords | Soldiers | |
keywords | System efficiency | |
keywords | Warfare | |
keywords | Engines | |
keywords | Compressors | |
keywords | Heat engines | |
keywords | Combustion chambers | |
keywords | Temperature | |
keywords | Combustion | |
keywords | Fluids | |
keywords | Diesel | |
keywords | Generators | |
keywords | Heat pumps | |
keywords | Heat exchangers | |
keywords | Optimization AND Turbines | |
tree | Journal of Energy Resources Technology:;1996:;volume( 118 ):;issue: 004 | |
contenttype | Fulltext |