Constructal optimization for an organic fluid shell-and-tube heat exchanger based on entransy theory

Feng, Huijun; Wu, Zhixiang; Xie, Zhuojun; Xia, Shaojun

doi:10.1360/sst-2019-0246

Cited by 7 publications

(6 citation statements)

References 32 publications

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“…The inlet temperature of hot water has a specific influence on the ammonia-water and hot water optimal mass flow rates, but does not influence the heat transfer rate's optimal external diameter [57]. A complex function formed of the entropy generation rate and total pumping power was minimized for the condenser case, which reflects the trade-off between the entropy generation rate and total pumping power [58]. Other recent research performed in this same line can be found in [59][60][61][62].…”

Section: Designs For Otec System Componentsmentioning

confidence: 95%

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Ocean Thermal Energy Conversion and Other Uses of Deep Sea Water: A Review

Herrera

Sierra

Ibeas

2021

JMSE

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Research into renewable energy is an active field of research, with photovoltaic and wind being the most representative technologies. A promising renewable energy source is Ocean Thermal Energy Conversion (OTEC), based on the temperature gradient of seawater. This technology has two contradictory features, as its efficiency is relatively low while, on the other hand, its energy source is almost unlimited. OTEC research has focused on optimizing energy extraction, with different techniques having been used for this purpose. This article presents a review of the advances and applications of OTEC technology around the world. Throughout the document, the different uses of deep seawater are analyzed; further, the current systems which generate energy through the marine temperature gradient are reviewed, and the main advantages and disadvantages of each method are highlighted. The technical operations, construction variations, and the projects that have been developed around the world and those which are in the planning phase are also detailed. The two main conclusions are that this technology is still under development, but it is quite promising, especially for regions with little access to drinking water. Second, given the high implementation costs and low conversion efficiency, the development of this technology must be sponsored by governments.

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Section: Designs For Otec System Componentsmentioning

confidence: 95%

“…Based on constructal theory, various investigations have been developed to design both a shell-and-tube evaporator [57] and condenser [58], with the working fluid being ammonia-water. In both cases, the principal objective was to optimize the tube diameter.…”

Section: Designs For Otec System Componentsmentioning

confidence: 99%

Ocean Thermal Energy Conversion and Other Uses of Deep Sea Water: A Review

Herrera

Sierra

Ibeas

2021

JMSE

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“…[33~36] 、电磁体 [37] 、肋片 [38~43] 、热源 [44,45] 、热沉 [46~48] 、换热器 [49,50] 、蒸汽发生器 [51] 、空腔 [52,53] 、冷却流道 [54,55] 、脉管网络 [56,57] 、绝热壁 [58] 、连铸过程 [59] 、轧钢加热炉 [60,61] 、炼钢转炉 [62] 、轧后冷却过程 [63] 、钢铁生产流程 [64] 等的优化设计中得到应用.…”

Section: 工程界各种结构优化设计问题的解决方案构形理论已经在体点导热unclassified

Constructal design for flat plate collector in a solar ocean thermal energy conversion system

Shi¹,

Feng²,

Chen³

et al. 2021

Sci. Sin.-Tech.

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“…Bejan 等人 [134] 以冷凝率最大为目标对蒸汽冷凝器管束的布置方式进行了构形优化, 得到了冷凝性能最优时的最佳管束布置方式. 冯辉君等人 [135,136] 和蔡存光等人 [137] 分别对基于R245fa和氨水工质的管壳式冷凝器管径进行了优化, 优化后冷凝器综合性能得到有效提升. 传热系数.…”

Section: 将构形理论引入到船海用蒸汽动力装置的结构设unclassified