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OTECの有効熱エネルギーに関する研究

発表形態:
一般講演(学術講演を含む)
主要業績:
単著・共著:
発表年月:
2017年
DOI:
会議属性:
査読:
リンク情報:

日本語フィールド

著者:
安永 健;森﨑 敬史;池上 康之
題名:
OTECの有効熱エネルギーに関する研究
発表情報:
動力・エネルギー技術の最前線講演論文集 : シンポジウム 巻: 2017 号: 0 ページ: -
キーワード:
概要:

For the evaluation of the heat engines, the thermal efficiency is commonly applied in the power plants. However, the maximization of the thermal efficiency do not lead the maximization of the available power output from OTEC, which converts into the work from the finite thermal energy stored between different temperature seawaters. The maximum work efficiency based on the theoretical maximum work from the ideal heat engine has been counseled for the evaluation, however, the implication in the available thermal energy has not identified substantially. This paper theoretically reveals the available thermal energy from the ocean thermal gradient and the effective energy, which is called the exergy, using the reference of the equilibrium temperature as the dead state. By employing the finite-time thermodynamics, the available energy and the exergy calculation methods are obtained and the normalized thermal efficiency for OTEC and the exergy efficiency are proposed.

抄録:

英語フィールド

Author:
YASUNAGA Takeshi;MORISAKI Takafumi;IKEGAMI Yasuyuki
Title:
Study of Available Thermal Energy on OTEC
Announcement information:
The Proceedings of the National Symposium on Power and Energy Systems Vol: 2017 Issue: 0 Page: -
An abstract:

For the evaluation of the heat engines, the thermal efficiency is commonly applied in the power plants. However, the maximization of the thermal efficiency do not lead the maximization of the available power output from OTEC, which converts into the work from the finite thermal energy stored between different temperature seawaters. The maximum work efficiency based on the theoretical maximum work from the ideal heat engine has been counseled for the evaluation, however, the implication in the available thermal energy has not identified substantially. This paper theoretically reveals the available thermal energy from the ocean thermal gradient and the effective energy, which is called the exergy, using the reference of the equilibrium temperature as the dead state. By employing the finite-time thermodynamics, the available energy and the exergy calculation methods are obtained and the normalized thermal efficiency for OTEC and the exergy efficiency are proposed.



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