本研究的目标如下:对水平管淹没式蒸发器进行文献综述，尤其是在空调和制冷应用领域。使用水平方向对单管和管束几何形状执行平滑管和增强表面管实验。评估氨的不同温度和流量条件，以确定最佳（最佳性能）条件。量化表面强化对壳程传热系数的影响。量化可混溶润滑剂对壳程传热系数的影响。开发适合在ASHRAE手册中发布的相关性/图表。任务一包括文献检索；任务二包含了实验工作。

The objectives of the present research are as follows:Undertake a literature survey on horizontal tube flooded evaporators, especially in the area of air-conditioning and refrigeration applications.Perform smooth tube and enhanced surface tube experiments for both single tube and tube bundle geometries using a horizontal orientation.Evaluate different temperatures and flow conditions for ammonia to establish optimum (best performance) conditions.Quantify the effects of surface enhancement on shell-side heat transfer coefficient.Quantify the effects of miscible lubricant on shell-side heat transfer coefficient.Develop correlations/charts suitable for publication in ASHRAE Handbooks.Task I included a literature search; Task II encompassed the experimental effort.