One of the most effective ways to enhance refrigeration system performance is through Vapor Quality Sensors, which provide precise, real-time insights into the evaporation process. These sensors function like an electronic sight glass, offering unparalleled monitoring and control of liquid levels in refrigeration systems.
What is a Vapor Quality Sensor?
A Vapor Quality Sensor is an advanced measurement tool designed to monitor the phase composition of refrigerant within an evaporator. Unlike traditional methods, which rely on superheat control, this sensor directly measures the gas-to-liquid ratio in the suction line, allowing for more accurate and responsive system adjustments. This innovation leads to a more stable and efficient refrigeration process, optimizing energy usage and system longevity.
Successful implementation in a German cold store
The German cold store operator needed a three-stage ammonia DX system for blast freezing, cold storage, and dock cooling. With a total cold room volume of 92,805m³, the system was initially designed as a pumped overfeed system requiring a high ammonia charge. By adopting Rod Style Sensors, the operator successfully transitioned to a DX system with a much lower charge, maintaining efficiency while improving sustainability.
After two years of reliable operation, the facility continues to benefit from the precision and efficiency of Vapor Quality Control.
The results?
• 24% energy savings, reducing energy consumption from 47kWh/m³/year to 36kWh/m³/year.
• Improved compressor protection and evaporator efficiency.
• More sustainable and cost-effective operation.
Read the full case study here.