为了评估雷诺数对喷雾蒸发环境中壳程传热性能的影响，使用R134a在1.4到7.9的过量进料比范围内进行了测试。过量供给比是指供给管束的制冷剂流量与蒸发的制冷剂流量之比。在固定制冷剂供给率下采集数据，同时将壳侧热通量从40 kW/m2（12688 Btu/[h—ft2]）变为19 kW/m2（6027 Btu/[h—ft2]）。对三角形和方形节距管束进行了测试，以确定管束几何形状对传热性能的影响。本研究使用了两个强化冷凝表面、一个强化沸腾表面和一个低翅片表面管。平面束测试与增强表面测试并行进行，以确定不同表面增强相对于光滑管的改善程度。 此外，还评估了管束深度对传热性能的影响。制冷剂通过广角实心锥形喷嘴引入试验段。为了确定与管束接触的制冷剂量，集热器测试与传热分析实验同时进行。利用收集器测试的结果，计算并报告了管束过量进料率。根据表面强化的类型，传热性能在不同程度上取决于薄膜供给率（即过量供给率）。限制液膜轴向流动的表面在管束的下排产生了较差的传热性能。其中一个强化冷凝表面的喷雾蒸发传热性能优于强化沸腾表面的浸没式蒸发器。关键词:1995年，蒸发器，制冷剂，流体流动，测试，热流，性能，管，R134a，雷诺数，几何，翅片管，比较引用: ASHRAE Trans。1995年，第101卷，第2部分，论文编号3916（RP-668），408-419，图10。，6个标签。，裁判。

Testing was conducted with R134a through an overfeed ratio range of 1.4 to 7.9 in order to evaluate the effects of Reynolds number on shell-side heat transfer performance in the spray evaporation environment. The overfeed ratio is defined as the ratio of the refrigerant flow rate supplied to the tube bundle to the refrigerant flow rate that vaporises. Data were taken with a fixed refrigerant supply rate while varying the shell-side heat flux from 40 kW/m2(12,688 Btu/[h×ft2]) to 19 kW/m2(6,027 Btu/[h×ft2]). Both triangular and square-pitch tube bundles were tested to determine the effects of bundle geometry on heat transfer performance. Two enhanced condensation surfaces, one enhanced boiling surface, and one low-finned surface tube were used in this study. Plain-surface bundle testing was conducted in parallel with the enhanced surface testing to determine the degree of improvement obtained with the different surface enhancements relative to that of a smooth tube. In addition, the effect of bundle depth on heat transfer performance was evaluated. Refrigerant was introduced into the test section with wide-angle, solid-cone nozzles. To determine the amount of refrigerant contacting the tube bundle, collector testing was performed in parallel with the heat transfer analysis experiments. Using results from the collector tests, bundle overfeed ratios were calculated and are reported. Heat transfer performance showed dependence on film-feed supply rate (i.e., overfeed ratio) to varying degrees, depending on the type of surface enhancement. Those surfaces that limited axial flow of the liquid film yielded poor heat transfer performance in lower rows of the bundle. The spray evaporation heat transfer performance for one of the enhanced condensation surfaces was better than the flooded evaporator performance for the enhanced boiling surface.KEYWORDS: year 1995, evaporators, refrigerants, fluid flow, testing, heat flow,performance, tubes, R134a, Reynolds numbers, geometry, finned tubes, comparing