[gone-ot]

Ah, but did you notice the HUGE change in relative humidity that's occuring "through" the cooler? The air comes in at 22-25%RH and exits at almost 80%RH...talk about sticky pooh!

At 95ºF outside air temperature and a coincident dew point temperature of 54ºF, the relative humidity of the outside air is just 25%RH. But, as that air weaves its way through the aspen pad, roughly 36 grains of water (7000 grains per pound moisture) have been evaporated into the transiting air volume, thus RAISING the relative humidity of the exiting air up to 78±%RH!

Because the human body "cools" itself by sweating, followed by subsequent evaporation of the that sweat--a one-layer swamp cooler, so-to-speak. However, at high humidity levels (>>50%RH), the sweat does not evaporate very quickly, so the skin doesn't cool down, leaving us feeling hot & sticky rather than just hot.