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首页> 外文会议>ASME heat transfer conference >AIR-SIDE PERFORMANCE CHARACTERIZATION OF AIR-TO-REFRIGERANT HEAT EXCHANGERS USING PARALLEL PARAMETERIZED CFD
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AIR-SIDE PERFORMANCE CHARACTERIZATION OF AIR-TO-REFRIGERANT HEAT EXCHANGERS USING PARALLEL PARAMETERIZED CFD

机译：基于并行参数化CFD的空气致冷剂换热器的空气侧性能表征

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摘要

The goal of the study presented in this paper is to use Computational Fluid Dynamics (CFD) to characterize the heat transfer and friction performance of fins used in air-to-refrigerant heat exchangers. Five different types of fins used in air-cooled heat exchangers (HXs) are studied using Parallel Parameterized CFD (PPCFD) approach described in this paper. The fin types considered in this paper are; Plain, Wavy, Slit, Super Slit, and Louver. 3-D CFD models are built and tested for these fin types. Based on the CFD results, air side heat transfer coefficient (HTC), Colburn j factor, Fanning f factor, and pressure drop are calculated. The results from CFD simulations are compared against experimental data from the literature for the different fin types and a good agreement is found between the two. In addition, the results from CFD simulations are used to evaluate the thermal and hydraulic performance for a wide range of heat exchanger parameters such as tube diameters, fin pitch, number of rows, and frontal air velocity. The results show the advantages of using PPCFD to efficiently develop correlations for different types of fins used in air-cooled HX, with significant reduction in engineering time. The PPCFD approach can be extended to efficiently optimize novel heat transfer surfaces.
机译：本文提出的研究目标是使用计算流体动力学（CFD）来表征空气制冷剂热交换器中散热片的传热和摩擦性能。使用本文介绍的并行参数化CFD（PPCFD）方法研究了用于风冷热交换器（HXs）的五种不同类型的散热片。本文考虑的翅片类型为：普通，波浪形，狭缝，超级狭缝和百叶窗。针对这些鳍片类型构建并测试了3-D CFD模型。根据CFD结果，计算出空气侧传热系数（HTC），Colburn j因子，Fanning f因子和压降。将CFD模拟的结果与文献中不同翅片类型的实验数据进行比较，发现两者之间有很好的一致性。此外，CFD仿真的结果可用于评估各种热交换器参数（例如管径，翅片节距，行数和正面风速）的热力和水力性能。结果表明，使用PPCFD可以有效地开发风冷HX中使用的不同类型鳍片的相关性，并显着减少了工程时间。 PPCFD方法可以扩展为有效地优化新型传热表面。

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