Gonzalo Arias
17-05-2007, 07:31 PM
Dear friends:
I have a MORRIS nugget ice maker RA NIM 80. This equipment was originally purchased for fresh water, but is installed taken water from a river that is influenced by the sea tide, and for the rains, so during the year and even during the day the salinity contents varies from 2 to 25 ppt (sea water salinity is about 35 ppt). The evaporator pressure that the system can reach with a VILTER 901 (200 hp) single screw compressor is 18#(saturate temp.=3F), that is far above the typical saturate temperature of -30F used for by example a HOWE sea water ice maker.
The capacity of this equipment is about 1/3 of the fresh water rating, which looks to me so low. I will like to know the derating factor for the salty water from 2 to 25 ppt, to see if the equipment is only influenced by the salt contents or if the system components are not working fine.
Best regards
I have a MORRIS nugget ice maker RA NIM 80. This equipment was originally purchased for fresh water, but is installed taken water from a river that is influenced by the sea tide, and for the rains, so during the year and even during the day the salinity contents varies from 2 to 25 ppt (sea water salinity is about 35 ppt). The evaporator pressure that the system can reach with a VILTER 901 (200 hp) single screw compressor is 18#(saturate temp.=3F), that is far above the typical saturate temperature of -30F used for by example a HOWE sea water ice maker.
The capacity of this equipment is about 1/3 of the fresh water rating, which looks to me so low. I will like to know the derating factor for the salty water from 2 to 25 ppt, to see if the equipment is only influenced by the salt contents or if the system components are not working fine.
Best regards