Heat Pump 05 Refrigeration cycle with components.

Lets review the heat pump cycle with the actual components before moving on to the metering devices in the next video
Heat pump absorbs heat outside and brings in inside in the winter. in the summer it absorbs heat inside and rejects heat outside.
Compressor discharges High temperature, high pressure superheated vapor to the reversing valve, the pipe by itself. In AC mode the reversing valve sends the hot gas to the outside coil to reject heat 1st de-superheat (sensible). 2nd condense, change state from a vapor to a liquid, saturation, latent. 3rd to sub cool below saturation sub cooled liquid below saturation
The liquid refrigerant travels past the outdoor metering device like its not even there. then to though the bi flow liquid line filter drier, to the indoor metering device.
This metering device is engaged and it meters the refrigerant allowing for expansion. approximately 25% of the refrigerant flashes immediately changing state from a liquid to a vapor absorbing heat form the remaining 75% liquid drooping its temperature. we are now in saturation.
The saturated liquid travels thought the evaporator coil, boiling/evaporating changing state from a liquid to a vapor. The heat in the air causes the refrigerant to boil, the refrigerant boiling absorbs the heat from the air.
The coil is below dew point so moisture also condenses out of the air.
The refrigerant changing state is latent heat, absorbing heat.
The air drops in temperature, sensibly cooling, the moisture condenses out of the air latent cooling the air.
After all the refrigerant boils to a vapor its still cooler than the air temperature but the vapor gains in sensible heat, thus superheating above saturation. The low temperature, low pressure superheated vapor travels to the reversing valve where it connects the the true suction pipe pipe in the middle of the 3. to the suction accumulator and then the the compressor where the cycle is complete.
In heating mode, the reversing valve is de energized ( in most brands) and the hot gas is now sent to the inside coil now acting as the condenser.
to reject heat. the refrigerant is a higher temperature than the air in the house. 1st de-superheat (sensible). 2nd condense, change state from a vapor to a liquid, saturation, latent. 3rd to sub cool below saturation sub cooled liquid below saturation
The liquid refrigerant travels past the indoor metering device like its not even there. then to though the bi flow liquid line filter drier, to the outdoor metering device.
This outdoor metering device is engaged and it meters the refrigerant allowing for expansion. approximately 25% of the refrigerant flashes immediately changing state from a liquid to a vapor absorbing heat form the remaining 75% liquid drooping its temperature. we are now in saturation.
The saturated liquid travels thought the outdoor coil, now acting as the evaporator coil, boiling/evaporating changing state from a liquid to a vapor. The heat in the air causes the refrigerant to boil, the refrigerant boiling absorbs the heat from the air.
After all the refrigerant boils to a vapor its still cooler than the air temperature but the vapor gains in sensible heat, thus superheating above saturation. The low temperature, low pressure superheated vapor travels to the reversing valve where it connects the the true suction pipe pipe in the middle of the 3. to the suction accumulator and then the the compressor where the cycle is complete.
The fat vapor line is LT LP SH VAPOR in cooling mode flowing inside ot outside. The fat vapor line is HT HP SH VAPOR in heating mode flowing from the outside to the inside.
The small line is liquid. Refrigerant is a HP warm SubCooled liquid in each mode. in the summer it is traveling from outside to the inside. in the winter the liquid travels from the inside to the outside.

[@repairitdontwreckit4257]

The more times I hear the explanation the more it sinks in. Thanks

[@jtopp86]

This is a subject where repetition is great!

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[@mark.r8900]

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[@user-oq4nj2tm9z]

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[@bangtwister]

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[@JDKellyStudentofHVAC]

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[@wendelbobb3584]

Great explanation , any videos on the split systems