METHOD AND DEVICE FOR STEP STARTING AGGREGATE AIR AMMONIA REFRIGERATION SYSTEM WITH SMALL AMOUNT OF REFRIGERANT Russian patent published in 2024 - IPC F25B1/00 F25B41/20 F25B49/02 

FIELD: refrigeration engineering.

SUBSTANCE: device for step starting an aggregate air ammonia refrigeration system with a small amount of refrigerant includes motorized valves at the inlet of the condenser coils, a main motorized compressor discharge valve, a pressure bypass control valve in the main compressor piping, check valves at the condenser outlets and a fan speed control capacitor. Motorized condenser inlet valves provide precise control of the gas flow into the condenser. The condenser coil outlet contains in-line check valves. The compressor discharge pipeline contains a single electric valve that regulates the discharge pressure during start-up. The motorized valve on the compressor discharge line also includes a bypass with a mechanical pressure regulator that provides precise control at minimum discharge pressure.

EFFECT: increase of reliability of the system at startup.

20 cl, 4 dwg