How The Calorex 'Aa300' Works - Calorex aa300 Technical Manual

1.0 HOW THE CALOREX 'AA300' WORKS

The Calorex 'AA300' is a packaged refrigerant type dehumidifier that is specifically designed to provide humidity
control and room heating (optional) for a swimming pool hall.
The Calorex 'AA300 is designed to be connected into an air distribution system that will provide a uniform flow of
air through out the hall. An optional fresh air entry point is available.
How a Calorex Dehumidifier Works
20ºC
Humid Air
80%
Principles of operation - air to air dehumidifier
The process of dehumidification involves moisture laden air being drawn through a refrigerated
coil (evaporator). At this point the air is rapidly cooled below its dew point, condensing the water
vapour and recovering its latent heat energy for reuse. The cooled air is then passed across a
condenser where it is reheated and returned to the room as warm, dry air.
The Calorex 'AA300' works by physically removing excess moisture from the pool hall air. This is achieved by
recirculating air from the pool hall through the unit and removing moisture from the air by use of the machines
internal refrigeration circuit.
As a by product of this process the Calorex 'AA300' will convert the energy it has absorbed into sensible heat.
This heat is added back into the return air stream and consequently provides supplementary hall heating. For every
1kw of power consumed the Calorex 'AA300 ' will return approximately 2.5kW of heat. This process is controlled
by a humidistat that measures the pool hall humidity and controls the machine to a set point that can be adjusted
to suit the clients need.
As an option the Calorex 'AA300' can be supplied with a low pressure hot water (LPHW) air heater. The LPHW
should be fed with hot water at 80ºC# and will provide space heating for the pool hall. The LPHW is integrally fitted
into the Calorex 'AA300' and is supplied with an adjustable thermostat, three way control valve and a switch relay
to control a boiler or pump. The boiler and pump are not supplied with this option.
# Note.
Consult Calorex for heat exchangers that are suitable for lower flow temperatures.
Expansion
Evaporator Condenser
Condensate
to waste
Compressor
Page 3
28ºC
Dry,
Warm Air
40%