研究了1575翅片/m（40fpi）三角形节距管在R134a喷雾蒸发环境中的传热性能。在40.2 kW/m2（12.8—10到功率3 Btu/[h—ft2]）到19.2 kW/m2（6.1—10到功率3 Btu/[h—ft2]）的热流密度范围内测量壳程传热系数。在管束上方66.7mm（25/8英寸）和41.3mm（15/8英寸）的喷嘴高度下，对圆形和矩形喷雾模式进行了评估。结果发现，几种喷嘴结构产生了壳体- 侧面传热系数高于池沸腾试验中发现的传热系数。管束传热性能与喷嘴孔尺寸和壁面热流密度有关，与喷射方式类型和喷嘴顶部高度的关系较弱。通过收集器试验确定，节流孔尺寸直接影响与管束接触的制冷剂量。关键词:1995年，喷嘴，高度，孔口，尺寸，热流，性能，翅片管，R134a，制冷剂，传热系数，测量，测试，蒸发器，喷嘴，比较，几何循环: ASHRAE Trans。1995年，第101卷，第2部分，论文编号3917（RP-668）420-433，图6。，4个标签。，裁判。

The heat transfer performance for a 1,575 fins/m (40 fpi) triangular-pitch tube in a spray evaporation environment with R134a was investigated. Shell-side heat transfer coefficients were measured through a heat flux range of 40.2 kW/m2(12.8 × 10 to the power 3 Btu/[h×ft2]) to 19.2 kW/m2(6.1 × 10 to the power 3 Btu/[h×ft2]). Both circular and rectangular spray patterns were evaluated at nozzle heights of 66.7mm (25/8 in) and 41.3mm (15/8 in) over the tube bundle. It was found that several nozzle configurations yielded shell-side heat transfer coefficients higher than those found in the pool-boiling test. Bundle heat transfer performance showed dependence on the nozzle orifice size and wall heat flux, with only a weak dependence on the type of spray pattern and the nozzle height over the top row. It was determined with collector tests that orifice size directly affected the amount of refrigerant contacting the tube bundle.KEYWORDS: year 1995, nozzles, height, orifices, size, heat flow, performance, finned tubes, R134a, refrigerants, heat transfer coefficient, measuring, testing, evaporators, spray nozzles, comparing, geometry