In 2001 the customer decided to replace the existing cooling-freezing plant with refrigerant R22 by a new plant with the natural refrigerants CO2 and NH3.
The ammonia parts of the plant are located in the machine room and partly on the roof (condensers). The supply of freezing on low temperature (-31°C and -51°C) shall be done with CO2.
The new plant has been completed and handed over during 2005 and has several advantages co
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