A two-dimensional, steady state model of convective film-wise condensation of a vapour and noncondensable gas mixture flowing downward inside a vertical tube was developed in paper .
Laminar film condensation in a vertical tube in the presence of noncondensable gas, Applied Mathematical Modelling 29: 341-359.
The centrifugal chiller also uses the vapor compression cycle and experiences certain faults encountered by package vapor compression units, such as low refrigerant charge, refrigerant overcharge, noncondensable gas in refrigerant, etc.
Moreover, the noncondensable gas tends to accumulate in the condenser.
In the LFEC, isothermal compression and expansion are approached by mixing a nonvolatile liquid with a noncondensable gas
during the compression and expansion processes.
Caremoli (1983) also developed a 2D computer code called CALICO to calculate the pressure drop, the noncondensable gas
distribution, and the heat transfer rate.
In addition, service faults, including refrigerant undercharge and overcharge and noncondensable gas, can be eliminated as well.
Refrigerant overcharge and the presence of noncondensable gas have similar symptoms with limited measurements, so it takes significant diagnosis time figure them out.
From the macroscopic and overall system point of view, the only discrimination among the seven faults of refrigerant leakage, compressor valve leakage, condenser fouling, evaporator fouling, liquid-line restriction, refrigerant overcharge, and noncondensable gas is the directional change of the overall system state variables' residuals.
So, noncondensable gas is considered to be a component-level service fault.
0] containing noncondensable gas
in an infinite volume of viscous liquid.
is transported with the steam from the geothermal resource.