Economizers in HVAC systems offer several benefits. First, they reduce the need for mechanical cooling by utilizing cooler outside air or cooler tower water when outside conditions are favorable, thereby lowering energy consumption. They also help in achieving significant energy savings, especially during mild weather conditions when outside air can be used for cooling.
Maximized use of “Free Cooling” designs incorporating direct and indirect evaporative cooling concepts in addition to water and airside economizer systems to minimize or eliminate the energy consumed for mechanical cooling.
Our waterside economizer (WiSE) is an energy-saving system that uses a cooling tower, condenser, water piping, control valves, and water coils to provide cooling without compressor operation. This innovation, which can be integrated into our Dedicated Outdoor Air Systems, is often referred to as “free cooling.”
Waterside Economizer…
…shown here on the inlet to a V-Cube™ Slim vertical self-contained air conditioner. This coil provides “free cooling” when the outdoor air temperature is less than the inside air. Free cooling implies no mechanical compressors are required.
Another energy saving advantage of “free cooling” opportunities is using the return air stream to pre-cool condenser fluid and reducing the mechanical (compressor) work required to meet load requirements.
Airside Economizers…
…provide another form of “free cooling”. When outdoor conditions permit, internal dampers can bypass the pressure drop of coils and heat exchangers and outdoor air can be mixed with return air to provide space cooling.
