How To Find Subcooling

How To Find Subcooling. Measure the liquid line pressure of the device. Wrap your thermocouples with insulation to obtain accurate pipe temperatures.

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Notice how it says locate the mfr's required subcooling on the dataplate, if missing, use 8° to 10° sounds like what i already said. Simply put, subcooling is the lowering in temperature of the liquid refrigerant in the condenser coil. For example, water boils at 212° fahrenheit at sea level (atmospheric pressure of 14.7 psia).

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Notice how it says locate the mfr's required subcooling on the dataplate, if missing, use 8° to 10° sounds like what i already said. The term subcooling also called undercooling refers to a liquid existing at a temperature below its normal boiling point.

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Use the dew point temperature on the pressure/temperature chart to obtain the evaporator saturation temperature for superheat, and the bubble point temperature to obtain the condenser saturation temperature to measure subcooling. Fully understanding superheat and subcooling is the key to a refrigeration system performing at its optimum level.

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That calculator is helpful for superheat charging because it's one of those ones that takes into account the indoor humidity. On a split system air conditioner, the condenser coil is in the outdoor unit.

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* from the unit data plate determine the type of refrigerant and recommended txv subcooling amount. For example, water boils at 212° fahrenheit at sea level (atmospheric pressure of 14.7 psia).

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This condition can exist at the bottom portion of a condenser, or in the liquid line where a heat exchanger is used. Subcooling is a measurement of temperature decrease of a liquid below its saturation (mixed liquid/vapor) temperature at a given pressure.

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That's really all that calculator is. On the condenser, take a pressure reading at the liquid line service port.

To Obtain The Amount Of Subcooling Subtract 109°F From 120°F.

Any additional temperature decrease is called subcooling. However most units that i have come accross do not specify the target subcooling (i speak of txv/13 seer units of course). Connect your pipe thermistor to the liquid line as close to the evaporator as possible and before the metering device.

Attach A Thermometer To The Liquid Line.

* from the unit data plate determine the type of refrigerant and recommended txv subcooling amount. Any additional cooling of the refrigerant that takes place beyond this condensing temperature is called subcooling. On a split system air conditioner, the condenser coil is in the outdoor unit.

Read The Thermocouple Temperature On The Digital Thermometer.

Start with the pressure from the thermocouple and subtract the temperature of the condenser saturation from it. This is the amount of subcooling. How to calculate subcooling step 1.

Measure The Liquid Line Temperature Of The Device.

That calculator is helpful for superheat charging because it's one of those ones that takes into account the indoor humidity. Measure the liquid line pressure of the device. Measure the liquid line temperature of the device.

Connect Your Gauge Manifold The System And Record Your High Side Pressure.

Use the refrigerant pressure/temperature chart to convert the pressure reading to the condenser saturation temperature. The difference is 11° subcooling. Using your pt chart convert your.