When outdoor temperature climbs past 32°C, a poultry house without evaporative cooling delivers inlet air at nearly the same temperature as outside. Birds then eat less, shell quality drops, and mortality rises in severe cases. The proven fix is a pad-and-fan system: wet cellulose pads on the inlet wall, exhaust fans pulling air through them, and ...
On a 38°C dry-bulb day with a 24°C wet-bulb temperature, a cooling pad running at 90% saturation efficiency can deliver air at roughly 25°C. The same system at 65% saturation efficiency will deliver air at about 29°C. That four-degree gap translates directly into poultry house productivity, worker comfort, or greenhouse crop quality. Saturation ef...
After a hot week in July, a poultry farm manager notices the indoor temperature creeping up even though the evaporative cooler is running at full speed. The airflow at the outlet feels weaker, and a musty smell hangs around the intake side. The fault is almost always the evaporative cooling pad, the corrugated cellulose media that does the actual ...
By 11 a.m. on a clear July day, the temperature inside a 40 x 100 ft greenhouse can climb past 38°C even with side vents open. After installing exhaust fans and an evaporative cooling pad, a grower expects the incoming air to drop to around 27°C. When that does not happen, the common response is to add another fan. In most real cases, the problem...
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