How to Measure Non Condensable Gases in Condenser

Presumably this is a refrigerant condenser. If so, you can measure the outlet temperature from the condenser, look up the corresponding saturated refrigerant pressure, and compare it with the inlet pressure to the condenser. The difference in these two pressures represents the proportion of noncondensable gases.

(It can be a bit more complicated if the liquid draining from the condenser is subcooled, which can occur from unsuitable piping that causes the lower part of the condenser to be filled with liquid, rather than free draining.)

Some manufacturers of condensers and noncondensable purgers have good literature on this. (E.g., BAC and Evapco condensers, Armstrong and Hansen purgers. I have no connection to these, but have used them satisfactorily.)

Similar principles apply to steam condensers, but I am not familar with details.

thanks for reply,

as u mentioned is not refigerant it is from turbine .so need some special device.

Start with the temperature, pressure and flowrate of these gases.

Follow it with the line size.

Then consider measuring devices that will fit it and will give the reading of the measurement that is required.

I have an old ultrasonic transducer that was used to charge AC systems and the device was able to detect bubbles in the liquid line during charging. If you want to detect them, this may be of assistance, if you are trying to measure the volume, then you need to get a glass cyclinder and actually measure the amount of gasses over the liquid material. Woody Enjoy