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Hello guys,
I would like to design refrigeration system of 1,5 kW cooling capacity. If take to account new f-gas regulation I decided to design system wich will run on R290. To consider compressor is easy, there is a lot of them designed to operate with propane.
My question, is there any special requirement for heat exchangers if I use propane as refrigerant?
.
NO, evaporators are fine but be careful with the fans.
The fans need to be X rated so they don't spark.
Rob
1.3.2 TYPE Ex de – FLAMEPROOF MOTORS WITH
INCREASED SAFETY TERMINAL BOX
(according to EN/IEC 60079-1 and EN/IEC 60079-7)
Ex de motors differ from Ex d motors only on the configuration
of terminals and terminal box. The terminal box with increased
safety terminals prevents from any ignition
.