CHR Series:

Coolbreeze™ offers state of the art custom designed heat recovery units series. The CHR series may include such heat recovery systems such as Aluminium plate heat exchanger, Heat Pipe, Heat Wheel and Glycol Run Around. Coolbreeze’s™ heat recovery systems are specially designed to reduce the high cost of air conditioning ventilation air by recovering a significant amount of the thermal energy from exhaust air.

Aluminum Plate Heat Recovery System:

Coolbreeze’s™ Aluminium Plate Heat recovery system is designed to have counter flow and no cross contamination. Frosting of the plate heat exchanger may be controlled by the following methods:

1. Face and Bypass dampers modulate to keep the exhaust temperature above freezing.
2. Face and Bypass dampers modulate to control the supply air temperature off the heat exchanger and keep the exhaust temperature above freezing.
3. A two position Face and Bypass dampers are open and closed via a two position damper motor. The bypass dampers open and the face dampers close for five minutes when a differential pressure air switch senses that frost is building up on the exhaust plates of the exchanger.

Heat Pipe Recovery System:

Coolbreeze’s™ heat pipe recovery system a face and bypass or tilt applications. The heat pipe recovery system may also be used in kitchen heat reclaim systems. The tilt control application automatically regulates the heat pipe’s capacity to perform the following:

1. Winter/Summer season changeover. The heat pipe will preheat the supply air in the winter and pre-cool the supply air in the summer. 2. Regulate the supply temperature leaving the heat pipe for desired conditions.
3. Prevent frost formation on the exhaust side on the heat pipe during cold weather. A face and bypass control system may also be used to regulate the temperature, pressure drop and prevent frosting on the exhaust side the coil.

Energy Recovery System:

Coolbreeze’s™ Energy Recovery Wheel System’s are a Desiccant or Enthalpy type wheel system depending on engineering application. The Desiccant type heat wheel using a 3A desiccant material which minimises cross contamination. The Desiccant material is either natural or man-made. The Enthalpy type heat wheel transfers sensible and latent energy from one air- side to the other. The Energy Recovery Wheel systems have a purge triangular section extending from the centre of the wheel to the edge. The purge section is located on the building side of the unit. The purge section allows a small amount of outdoor air to pass through the media effectively removing all exhaust air trapped inside the wheel as the wheel rotates from the exhaust side to the supply side. This prevents any contamination of the fresh outdoor air with pollutants contained in the exhaust air stream.

Glycol Run Around Heat Recovery:

Coolbreeze™ Glycol Run Around Heat Recovery is a two or more coil system. The heat from the exhaust air is used to heat the glycol fluid in the system to provide heating to the supply air coils. The coils are selected and balanced based on the thermal loads.

Kitchen Heat Recovery:

Coolbreeze™ Kitchen Heat Recovery system utilizes heat pipe for heat recovery. The Kitchen Heat Recovery system will have the following items:

1. The exhaust side of the heat pipe is cleaned using spray nozzles upstream and downstream of the heat pipe and a chemical detergent wash. Automatically each day the heat pipe is washed with a hot water detergent from both sides with a maximum penetration of 6 inches.
2. The exhaust side is lined with 18 gauge 304L stainless steel continuously welded for water leakage.
3. The exhaust section of the heat pipe will have a 304L stainless steel drain pan.
4. A wash down control panel in galvanised or stainless steel including detergent injection system timers, solenoid valves and a fire alarm.
5. The exhaust side shall have a fire thermostat. The fire thermostat activates an audible alarm in the remote control panel and the wash system.
6. On the supply side of the heat pipe is a modulating face and bypass damper to prevent frosting on the exhaust side of the coil.
7. The supply fan discharge shall have a fire damper.
8. The exhaust air discharge shall be a minimum of 40 inch above the roof. 9. The outside air intake and the exhaust air discharge shall be a minimum of 10 feet.