间接蒸发冷却（IEC）是一种水基冷却技术，由于其较低的能耗（与蒸汽压缩空调相比）和缺乏增湿（与直接蒸发冷却相比），对干燥和炎热气候下的空间冷却具有吸引力。先进的IEC或混合IEC/DX（直接膨胀蒸汽压缩）系统（Elberling 2006）（Elberling 2006）（Elberling 2006）的关键部件是IEHX（间接蒸发热交换器）。需要一个实用的IEHX精确模型来描述这些冷却器的热行为，并支持HVAC设计师实施这些冷却器。本文提出了一种IEHX的热建模方法，类似于显热交换器的有效性NTU方法。描述IEHX行为的控制微分方程被转化为一组可以在短时间内稳定求解的分析方程。 对于简单的情况，该模型可以在没有任何性能数据的情况下应用，或者使用两种不同空气流量下的测量值（通常在制造商目录中提供）。利用文献中的实验数据研究了该模型的性能。作为一个实施示例，该方法被用于分析固定换热器体积和空间冷负荷约束下的板式换热式IEHX的尺寸。它产生了2-3mm的非最佳通道高度，以最好地满足湿球效率、性能系数和单位面积产冷量之间的规定权衡。引文:美国丹佛市ASHRAE会议论文

Indirect evaporative cooling (IEC) is a water-based cooling technology that is attractive for space cooling in dry and hot climates due to itslower energy consumption (compared to vapor compression air conditioners) and lack of humidification (compared to direct evaporative cooling).The key component of advanced IEC or hybrid IEC/DX (Direct eXpansion vapor compression) systems(Elberling 2006)(Elberling2006)(Elberling 2006) is the IEHX (indirect evaporative heat exchanger). A practical accurate model of an IEHX is needed to characterizethe thermal behavior of these coolers and to support their implementation by HVAC designers. This paper presents a methodology for the thermalmodeling of IEHXs that is analogous to the effectiveness-NTU method for sensible heat exchangers. The governing differential equations thatdescribe IEHX behavior are transformed to a set of analytical equations that can be solved stably within short computation times. The model canbe applied without any performance data for simple cases, or using measurements at two different air flow rates (often available in manufacturers'catalogues). The model's performance was investigated utilizing experimental data from the literature. As an implementation example, the methodwas used to analyzing the sizing of a plate regenerative-type IEHX under constraints of fixed HX volume and space cooling load. It produced anoptimal channel height of 2-3 mm to best satisfy specified trade-offs between wet bulb effectiveness, coefficient of performance, and cooling producedper unit area.