How To Check Superheat At Evaporator. The refrigerant gains superheat as it travels through the evaporator, basically starting at 0. Using superheat and subcooling data in troubleshooting:
For example, after all the water has evaporated and the gas reaches 213 degrees f, it is said to be superheated by 1 degree f. • the vapor will continue to pick up heat from the load as it passes through the remainder of the evaporator coil. This is measured at the outlet of the evaporator.
Record the actual temperature at the txv bulb with a probe.
Defective, plugged, or undersized metering device. When it is still in the process of boiling it will be in a mixed state and will be at saturation temperature for that given pressure. For example, after all the water has evaporated and the gas reaches 213 degrees f, it is said to be superheated by 1 degree f. 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.