为了合理设计蒸发器并建立相关关系，有必要获得详细的试验数据。试验数据应给出传热和压降率，作为相关参数的函数（如质量流率、蒸汽质量、压力、热流密度）。有关视觉观察的信息（例如流型、管道表面湿润的程度、油的行为）也非常有用。已经对卤代烃制冷剂进行了许多此类研究，并在已发表的论文、报告、博士论文等中提供了各种各样的实验数据。氨蒸发器的情况非常不同。很多实验工作是在很久以前完成的，当时影响传热和压降的参数还不完全清楚。 因此，这些研究中公布的数据不包含质量流量和蒸汽质量等重要参数，因此无法对其进行分析和概括。克莱斯和施温德就是这样的例子。据作者所知，对于含有油的氨蒸发器，公众可以接触到的唯一可分析的数据是沙阿在一篇论文中以图形显示的数据。Noel在一篇论文中发现了一些无油氨的可分析数据，但其范围仅限于过冷沸腾区。引文:新墨西哥州阿尔伯克基市阿什雷学报第84卷第2部分

For rational design of evaporators and for developing correlations for the same, it is necessary to have detailed test data. The test data should give heat transfer and pressure drop rates as a function of pertinent parameters ( such as mass flow rate, vapor quality, pressure, heat flux). Information on visual observations ( for example flow patterns, extent of pipe surface wetted, behavior of oil) are also very useful.Many such studies have been carried out for halocarbon refrigerants and a wide variety of experimental data are available in published papers, reports, doctorate theses, etc. The situation for ammonia evaporators is very different. Much of the experimental work was done long ago when the parameters affecting heat transfer and pressure drop were not known fully. Consequently, the published data from those studies do not contain important parameters such as mass flow rate and vapor quality, thus making it impossible to analyze and generalize them. Examples of such work are those of Cleis and Schwind. To the author's knowledge, the only analyzable data for ammonia evaporators containing oil, which are accesible to the general pUblic, are those shown graphically in a paper by Shah. Some analyzable data for oil-free ammonia are to be found in a paper by Noel but their range is confined to subcooled boiling region.