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Computer Controlled Recirculating Air Conditioning Unit Didactic Equipment Vocational Training Equipment Refrigeration Training Equipment

Item No.: RA3
Computer Controlled Recirculating Air Conditioning Unit Didactic Equipment Vocational Training Equipment Refrigeration Training Equipment
Description
RA3 Computer Controlled Recirculating Air Conditioning Unit Didactic Equipment Vocational Training Equipment Refrigeration Training Equipment

DESCRIPTION
RA3 is a floor standing unit, with all the features of the RA2 plus a recirculation feature via an enclosed chamber. Some of the air exiting the chamber can be recycled back into the conditioning duct.
The RA3 is a floor standing, self contained unit comprising a square ventilation duct mounted on a mild steel frame. The duct has a clear acrylic section allowing visibility of all components.
The air out of the duct is passed into a chamber to demonstrate climate control. The exit duct from the chamber is fitted with adjustable vents allowing some of the air to be recirculated back to the duct inlet.
Additional sensors measure the temperature and RH at the chamber outlet and after the recirculated air is mixed with the inlet air as well as the flow rate of the recirculated air.
Pressure gauges and temperature sensors allow the refrigerant temperature change across the condenser and evaporator to be established.
The refrigerant flow rate is measured using a variable area flow-meter.


EXPERIMENTAL CONTENT
To investigate and understand the use of psychrometric charts, understand relative humidity (RH) measurements and the effect of temperature on RH and understand the Humidity Ratio
To investigate sensible heating of air in a duct
To investigate the humidification of air. To investigate the effect of vapor content and temperature on relative humidity
To investigate dehumidification of air by cooling
To investigate and understand the effect on enthalpy, understand relative humidity (RH) measurements and the effect of temperature on RH and understand the Humidity Ratio
To investigate and understand recirculation and the effect on the system efficiency
To investigate and understand recirculation and the effect on various aspects of the air conditioning cycle
Heat transfer across the evaporator