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Thread: Change NH4 to R134A
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12-08-2007, 01:59 AM #1
Change NH4 to R134A
Dear Friends
A customer has the refrigeration plant close to production area. They manufacture spaguetties . They have had some leaks of ammonia in the ambient It makes the production people to hold prodution. They ask for change the refrigerant from NH3 to R135A or R22.
The refrigeration system was designed to cool water from 35°C to 18°C . It is formed for three screw compresors ,three evap condencers and three flooded shell and tube heat exchangers . The oil of the compressor are cooled by a thermosiphon system.
Could such ammonia system move to R134A or R22?
Could the heat exchange operated with R22 or R134A?
What about the oil coolers?
What about the compressors?
I appreciate your thought
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