What technology is used for ammonia refrigeration in various factories, especially the older ones?
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What technology is used for ammonia refrigeration in various factories, especially the older ones? What form of device
Conventional ammonia refrigeration makes use of screw chillers or turbine chillers; nowadays, many companies are gradually adopting the ammonia absorption refrigeration process.
New plants these days generally use centrifugal ammonia compressors for cooling, while older plants usually use screw chillers for cooling
Some older chemical plants use a combination of ammonia absorption refrigeration and screw chillers
Shell-and-tube circulating water cooling heat exchangers are sometimes divided into three or four stages
Most old factories use screw compressors!
There are 8-cylinder piston ice machines! And shell-and-tube coolers! Evaporative coolers are also used~!
We are centrifugal compressors with three-stage flash evaporation, and there is a water cooler in between