Propylene System

[sagittarius]

Besides the above puzzle, I have the same thinking to the ammonia system.The present water in the R717 system maybe cause the same trouble,don't it?But in the R717 system there isn't filter-dryer.What happend?
solubility of water with refrigerants?

[US Iceman]

The present water in the R717 system maybe cause the same trouble, don't it? But in the R717 system there isn't filter-dryer. What happened?

Ammonia is hygroscopic. It will absorb water just like a drier will. The ammonia will continue to absorb water until it reaches a saturated point. As the ammonia continues to absorb water the pressure/temperature relationship is changed. You have to run lower and lower evaporating pressures to obtain the same temperature without the water being present.

Driers are available for ammonia, but not normally used.