The modules consist of a set of tubes with dry interior air passages and an exterior surface coated with a fibrous material to absorb and retain water. Air to be conditioned is moved through the dry air passage, releasing its heat to the cooled surfaces, and cooling the air without adding moisture. To improve the cooling capability of the indirect evaporative module, the system may use building exhaust air as the air source for the wetside air passage. This air has already been conditioned and thus is typically cooler than outside air during the cooling season. This can be especially valuable for buildings that require large amounts of outside air ventilation.
Savings can be even greater when new systems are custom-engineered or replace old systems.
This is difficult. A dirty condenser coil can result in 30 percent higher compressor energy use. Thermal Energy Storage for HVAC Systems. Tinted Window Glazings for Comfort. When you have found the type of equipment you need, print the page and bring it to your vendor.