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Refrigeration system with NH₃ in the primary circuit and glycol in the secondary circuit. The system consists of the following components: 1. 2 refrigeration compressors for compressing NH₃, of which: - 1 x reciprocating compressor (Sabroe, 2008) with a capacity of 75 kW (used during normal operation) - 1 x screw compressor (Stal, 1991) with a capacity of 75 kW (used as a standby unit) 2. Plate heat exchanger (Alfa Laval, 1997) for evaporating NH3 whilst simultaneously cooling glycol. 100 m³/h of glycol is cooled from 0°C to -3°C. The glycol transports the cold into the process. 3. Condenser for the liquefaction of NH₃ (Evapco, 2002) with a condensation capacity of 620 kW, installed outdoors. 4. NH3 collection tank (EM-Polar, 2009) with a volume of approx. 3 hl 5. Glycol tank, vertical, clad 6. 2 centrifugal pumps for pumping glycol 7. Control cabinet with touch panel as HMI. 8. Various pipework, valves, sensors
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Additional title: NH₃-glycol cooler as a secondary cooling system; manufactured between approximat
Cooling capacity appr: 300 kW
Operation / Control: Simatic S7-1500 (manufactured in 2022)
Features: 2 x refrigeration compressors; plate heat exchanger (evaporator/glycol cooler); condenser; NH₃ tank; glycol tank; 2 x glycol pumps; control cabinet with touch panel; various pipes, valves and sensors