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What is the expansion valve in HVAC & How it
works ????????????
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Answer Posted / dcompton
THE NAME "EXPANSION VALVE" TELLS IT ALL. WHEN LOOKING @ A
TYPICAL SYSTEM THE EXPANSION VALVE IS USED TO MAINTAIN A
CONSTANT SUPERHEAT. (A CAPPILLARY TUBE EXPANSION DEVICE
PROVIDES CONSTANT FLOW). AS LIQUID (HIGH PRESSURE,HIGH
TEMPERATURE,SUBCOOLED) REFRIGERANT FLOWS INTO THE EXPANSION
VALVE, IT FLOWS THRU A METERING ORIFICE AND IS ALLOWED TO
EXPAND INTO THE EVAPORATOR. THE REFRIGERANT THEN ABSORBS
THE LATENT HEAT OF EVAPORATION (HENCE EVAPORATOR). THE
FLOW IS REGULATED IN ACCORDANCE WITH SETTINGS & LOAD
CONDITIONS.
| Is This Answer Correct ? | 11 Yes | 3 No |
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