蒸发冷却和强制对流可以有效地提高奶牛在炎热气候下的性能。将蒸发与空气运动结合起来，在不完全封闭的情况下为动物降温，为利用这两种古老而常见的降温方法提供了一种新方法。预冷器以低速通过体表并被动物吸入，可充分降低热应激，从而显著提高生产和繁殖性能。引文:ASHRAE交易，第80卷，第2部分，蒙特利尔，QC

Evaporative cooling and forced convection can be used effectively to improvethe performance of dairy cattle 1n hot climates. Combining evaporation withair movement for cooling animals without complete confinement provides a newapproach in utilizing these two old and common methods of cooling. Pre-cooledair passing over the body surfaces at low velocity and inhaled by the animalsreduces heat stress sufficiently for substantial improvements in productiveand reproductive performance.