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ITEM |
: ABSORPTION
REFRIGERATION TRAINER |
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MODEL |
: RBA-ART |
The Labtech
Absorption Trainer will familiarize students with the principles of
Refrigeration absorption system in use today. Typically absorption system are
used in applications that require lower power usage such as refrigeration in
recreational vehicles. They are also useful in remote locations far away from
the common availability of electricity and can be easily adapted to LPG,
kerosene and solar power. Larger systems are also suited for industrial use.
The trainer
features a dual power source of LPG and electricity. The heat generated by these
source makes ammonia evaporate from a water/ammonia solution. The ammonia vapor
rises and condenses into a liquid by flowing through a finned heat exchanger.
The water is separated off and returns to the absorber. The ammonia then falls
to the condenser whereby it boils (due to the lower pressure in the evaporator)
and vaporizes thereby absorbing heat which cools the refrigerator. The vapor
then falls back the absorber vessel and is reabsorbed by the water solution and
the cycle repeats.
Features: Components are clearly laid out
and mounted onto a mobile stand that incorporates a work surface. A dual energy
source is provided which includes both electrical and an LPG source. The LPG
source includes the burner and regulator. The LPG tank need to be provided
locally due to shipping regulations and variations of tank/fitting standard in
different countries. For the electrical source, the trainer features a step down
transformer to convert the main AC into 12 VDC used to power the electric
heater. The absorption circuit diagram is silk screened onto the trainer. A
cabinet with temperature gauge monitors the cooling effect. Courseware is
included with student job sheets
Main
Components: Self contained absorption
system, refrigeration compartment with temperature meter, silk screened
refrigeration circuit diagram, LPG burner with pressure regulator, electrical
heater with 12 VDC transformer. Instrument panel includes ON/OFF switch,
voltmeter and amp meter.
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