The project includes: general description of refrigeration process materials and equipment specifications, schematic diagram of ammonia refrigeration system, layout plan of process pipeline in refrigeration room, section diagram of process pipeline in refrigeration room, layout plan of water system and ammonia pump in refrigeration room, section diagram of water system and ammonia pump in refrigeration room, section diagram of water system and ammonia pump in refrigeration room, layout plan of evaporative condenser Equipment plan of refrigerating machine room