The solid refrigerant is packed into a metal tube, along with an inert liquid like water or oil. A hydraulic piston applies pressure to the liquid, which in turn passes it along to the refrigerant.

A pocket card called “Pressure Temperature Chart” is available from the company. This foldable, pocket-size card contains a saturation chart that provides data on psig vs. temperature. Another chart ...

The change in pressure differential across the fixed metering device forces the refrigerant into the evaporator at differing rates. Because of the variable flow rate of the refrigerant into the ...

The processes governing condensation in refrigerants are critical to modern thermal management and energy systems. Condensation heat transfer, which involves the phase change from vapour to liquid ...

Palmer Wahl has added differential pressure chart recorders to its existing line of mechanical circular chart recorders.