CNF, CN, CF, and SV Series heat exchangers are sized and designed to meet a large range of system requirements, and include all connections for accessories.
In the gas pressure reduction process according to the “Joule-Thomson” effect, temperature drops considerably (approximately 0.6ºC / 33ºF per reduction bar).
This fall in gas temperature can damage the equipment due to the formation of dangerous ice crystals produced by water vapor in the gas.
Particularly in first stage stations, high pressure changes are usually involved, therefore, the gas must be heated before pressure is reduced.
It is recommended that, after reduction, gas temperature should not be below 5ºC / 41ºF.
One of the best established methods of heating gas in reduction stations is to use heat exchangers employing hot water or steam as their thermal carrier fluid.
CNF, CN, CF, and SV Series are in conformity with the Pressure Equipment Directive
PED 97/23/EC and are classified in Category Max. IV
