02. 4 component flow
DESCRIPTION
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BasicBasicRefrigerationRefrigeration
SystemSystem
4 Component Flow 4 Component Flow DiagramDiagram
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The High SideThe High Side
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Condenser
Compressor
DischargeServiceValve
Thermal Expansion Valve
HT HP SHV
HT HP S.M.
HT HP SCL
Legend
HT HP SHV
HT HP S.M.
HT HP SCL
The High Side
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The Low SideThe Low Side
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Thermal Expansion Valve
Evaporator
TXV Bulb
Equalization Line
SuctionService Valve
Compressor
Flash Gas
Legend
LT LP S.M.
LT LP SHV
The Low Side
LT LP S.M.
LT LP SHV
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The SystemThe System
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High Side
AmbientAir
Low Side
ReturnAir
Supply Air
Conditioned Space
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System System PressuresPressures
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R-134a
You have a discharge Pressure of 182.00 PSIG. What do you know about the refrigerant?
Saturation Temp. = 124° F.
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R-134a
You have a Discharge Pressure of 156.10 PSIG. You find a temperature on the high side of 120° F.
What do you know about the refrigerant?
Saturation Temp. = 114° F.
Temp. Taken in this area!
HT HP SHV Superheated by 6° F.
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R-134a
You have a Discharge Pressure of 171.30 PSIG. You find a temperature on the high side of 110° F.
What do you know about the refrigerant?
Saturation Temp. = 120° F.
HT HP SCLSub-cooled by 10° F.
Temp. Taken in this area!
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R-134a
You have a Suction Pressure of 5.50 PSIG. What do we know about the refrigerant leaving the TXV?
Saturation Temp. = -2° F.
LT LP S.M.
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R-134a
You have a Suction Pressure of 5.50 PSIG. You find a temperature at the TXV Bulb of 5.0° F.
What do you know about the refrigerant?
Saturation Temp. = -2° F.
LT LP SHV Superheated by 7° F.