Optimal temperature conditions of finite heat-recovery cycles from a non-isothermal heat source

Keisuke Takeshita, Yoshiharu Amano

研究成果: Conference contribution

抄録

In this paper, an analysis of the temperature condition producing maximal power from a sensible heat source by finite heat-recovery thermodynamic cycles is presented. Some studies have been conducted that theoretically analyzed a system utilizing thermal energy from heat sources by multiple thermodynamic cycles in cascade with the assumption of constant heat-source temperature. However, many heat sources for heat-recovery thermodynamic cycles are sensible, in which the temperature changes considerably with the cycles during heat exchange. Therefore, it is necessary to consider the temperature change of the heat source. First, a temperature condition that maximizes the power generated by a combination of single/multiple Carnot cycles from constant-specific-heat heat sources is analyzed, and the optimal temperature is derived analytically. Subsequently, simulations of the Rankine cycle and several patterns of the Kalina cycle are compared to the analytical model. These comparisons reveal that the Carnot cycle model provides an effective estimation of the temperature conditions for the heat-recovery cycles that produce maximal power from a sensible heat source.

本文言語English
ホスト出版物のタイトルECOS 2019 - Proceedings of the 32nd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems
編集者Wojciech Stanek, Pawel Gladysz, Sebastian Werle, Wojciech Adamczyk
出版社Institute of Thermal Technology
ページ1337-1348
ページ数12
ISBN(電子版)9788361506515
出版ステータスPublished - 2019
イベント32nd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2019 - Wroclaw, Poland
継続期間: 2019 6 232019 6 28

出版物シリーズ

名前ECOS 2019 - Proceedings of the 32nd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems

Conference

Conference32nd International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems, ECOS 2019
国/地域Poland
CityWroclaw
Period19/6/2319/6/28

ASJC Scopus subject areas

  • エネルギー(全般)
  • 工学(全般)
  • 環境科学(全般)

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