Show simple item record

contributor authorYue Zhang
contributor authorBihong Lin
contributor authorJincan Chen
contributor authorCongjie Ou
date accessioned2017-05-09T00:19:40Z
date available2017-05-09T00:19:40Z
date copyrightSeptember, 2006
date issued2006
identifier issn0195-0738
identifier otherJERTD2-26538#216_1.pdf
identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/133588
description abstractAn irreversible cycle model of the Brayton heat engine is established, in which the irreversibilities resulting from the internal dissipation of the working substance in the adiabatic compression and expansion processes and the finite-rate heat transfer in the regenerative and constant-pressure processes are taken into account. The power output and efficiency of the cycle are expressed as functions of temperatures of the working substance and the heat sources, heat transfer coefficients, pressure ratio, regenerator effectiveness, and total heat transfer area including the heat transfer areas of the regenerator and other heat exchangers. The regenerative criteria are given. The power output is optimized for a given efficiency. The general optimal performance characteristics of the cycle are revealed. The optimal performance of the Brayton heat engines with and without regeneration is compared quantitatively. The advantages of using the regenerator are expounded. Some important parameters of an irreversible regenerative Brayton heat engine, such as the temperatures of the working substance at different states, pressure ratio, maximum value of the pressure ratio, regenerator effectiveness and ratios of the various heat transfer areas to the total heat transfer area of the cycle, are further optimized. The optimal relations between these parameters and the efficiency of the cycle are presented by a set of characteristic curves for some assumed compression and expansion efficiencies. The results obtained may be helpful to the comprehensive understanding of the optimal performance of the Brayton heat engines with and without regeneration and play a theoretical instructive role for the optimal design of a regenerative Brayton heat engine.
publisherThe American Society of Mechanical Engineers (ASME)
titleThe Regenerative Criteria of an Irreversible Brayton Heat Engine and its General Optimum Performance Characteristics
typeJournal Paper
journal volume128
journal issue3
journal titleJournal of Energy Resources Technology
identifier doi10.1115/1.2213272
journal fristpage216
journal lastpage222
identifier eissn1528-8994
keywordsPressure
keywordsHeat engines
keywordsCycles
keywordsPerformance characterization
keywordsHeat transfer
keywordsTemperature AND Functions
treeJournal of Energy Resources Technology:;2006:;volume( 128 ):;issue: 003
contenttypeFulltext


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record