Receiver Function

Ammonia refrigeration systems require liquid storage at -20°C to -40°C feeding evaporators for process cooling. Final receivers provide surge volume accommodating varying evaporator loads, separate flash gas from condenser discharge maintaining pure liquid feed, and ensure adequate suction head for liquid pumps preventing cavitation in low-temperature service.

Vessel Design

Horizontal or vertical pressure vessel with insulation minimizing heat gain. Vapor space connected to condenser or accumulator. Liquid outlet feeds evaporator circuits or liquid pumps. Level instrumentation monitors inventory. Drain and relief connections complete system integration. ERGIL sizes receivers based on refrigeration capacity and surge requirements.

Low-Temperature Service

Operating temperatures -20°C to -40°C require impact-tested materials preventing brittle fracture. Operating pressure 30-150 psig matches ammonia saturation conditions. Insulation thickness minimizes refrigeration load from ambient heat gain. Design per ASME Section VIII with low-temperature material specifications.

Material Selection

Carbon steel with Charpy impact testing verifying low-temperature toughness. Materials meet ASME Section VIII requirements for temperatures below -20°C. Insulation using polyurethane foam or fiberglass with weatherproof jacketing. Proper thermal expansion provisions accommodate temperature cycling.

Applications

Industrial refrigeration systems for cold storage, food processing, ice production, chemical process cooling, and HVAC chilled water plants. Serves facilities with ammonia refrigeration capacities 50-5,000 tons of refrigeration requiring low-temperature liquid storage.

Control Integration

Level control manages liquid inventory maintaining adequate supply to evaporators. High and low-level alarms prevent overflow or liquid starvation. Temperature monitoring verifies proper refrigeration conditions. Integration with refrigeration controls optimizes system operation.

Safety Features

Pressure relief valves sized for fire exposure and blocked outlet scenarios. High-pressure alarms provide early warning. Emergency isolation valves enable system sectioning. Installation per IIAR ammonia refrigeration standards. Proper ventilation and leak detection systems.

Performance Benefits

Provides essential liquid surge capacity for stable refrigeration operation. Maintains low-temperature liquid supply to evaporators. Separates flash gas ensuring pure liquid feed. Insulation minimizes parasitic refrigeration loads. Proven low-temperature pressure vessel technology.

Construction Standards

Design per ASME Section VIII with low-temperature material specifications. Impact testing per code requirements. Relief sizing per IIAR 2 ammonia refrigeration standards. Insulation per industrial refrigeration practices. Complete documentation with material test reports and design calculations.

Operational Advantages

Reliable low-temperature ammonia storage with proper materials and insulation. Simple level-based operation integrates with refrigeration controls. Minimal maintenance beyond periodic inspection. Safe design meeting ammonia refrigeration safety standards.

ERGIL cold ammonia final receivers deliver dependable low-temperature liquid storage ensuring stable refrigeration system operation in industrial ammonia cooling applications.