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首页> 外文期刊>Chemical Engineering Research & Design: Transactions of the Institution of Chemical Engineers >Role of entropy generation during convective thermal processing in right-angled triangular enclosures with various wall heatings
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Role of entropy generation during convective thermal processing in right-angled triangular enclosures with various wall heatings

机译：在对流作用熵的一代热处理在直角三角形附件与各种墙加热

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摘要

Thermal energy conservation is at the heart of energy efficiency in process industries. This allows researchers to go for advances in CFD methods to track the requirement of thermal energy for various thermal processing applications. CFD models need to be incorporated into optimization principles to achieve efficient industrial process designs. In this study, entropy generation due to natural convection in right-angled triangular enclosures (cases 1-4) has been studied numerically for energy efficient processing of various fluids (Pr = 0.025, 7 and 1000). It is found that maximum value of entropy generation due to heat transfer (S_(θ,max)) occurs near the vertex of the enclosures for cases 1 and 3, near corner between left wall and bottom wall for case 2 and near lower portion of the right wall for case 4. On the other hand, maximum value of entropy generation due to fluid flow (S_(ψ,max)) is observed near middle portions of the side walls for all cases and the location of S_(ψ,max) mainly depends on the presence of high velocity gradients. The entropy generation rates and heat transfer rates were also shown for various angles. Triangular cavities with specific angles are recommended for various orocessine fluids.
机译：热节能的核心在过程行业能源效率。让研究人员去CFD的发展方法跟踪热的要求为各种热处理能源应用程序。为实现高效的优化原则工业过程的设计。熵代由于自然对流直角三角形的附件(例1 - 4)研究了数字节能处理各种体液(公关= 0.025,71000)。代由于传热(S_(θ,马克斯))发生的顶点附近的附件例1和3,左墙和之间的拐角附近下盘附近情况2和较低的部分合适的墙案例4。最大熵值代由于流体流(S_(ψ,max))是观察附近的中间部分所有情况下,侧墙的位置S_(ψmax)主要取决于的存在高速度梯度。率和传热率也显示了不同的角度。为各种orocessine角度推荐液体。

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