A two-stage evaporative cooling system can deliver cool indoor air with a relative humidity in the 50 %-65% range, while direct evaporative cooling systems typically condition the air at around 70% relative humidity.
According to the American Society of Heating and Engineers (ASHRAE), advanced two-stage evaporative coolers can use 60% -75% less electricity than conventional refrigerant-based AC systems.
As part of a heating, ventilation, and air conditioning system, an air handling unit, also known as an air handler, is a piece of equipment that is used to condition and circulate air. A blower, heating and cooling elements, filter chambers, sound attenuators, and dampers are commonly found in this big metal box.
There are many different types of cabinets with a range of airflow patterns and permissible uses, and such hoods are available in both horizontal and vertical designs. For these cabinets, NSF49 is the widely acknowledged regulatory standard.
A heat recovery system is designed to supply conditioned air to the occupied space to maintain a certain temperature.
A heat recovery unit is basically composed of a directly driven fan, an exhauster and a heat exchanger, all perfectly assembled and joined inside a thermal and noise insulated structure.
Dry Scrubbing is one of the latest technologies which has been developed and is used in effective waste removals. It can be used to remove sulfur dioxide, hydrochloric acid, etc. from the environment.