REFRIGERANTS


aspirators, reducing the need for regular servicing beyond required annual calibration. Cons:


Limited Detection Range: Diff usion-based detectors might have limitations in detecting leaks in larger spaces or areas with poor air circulation. They are more suitable for localised leak detection rather than comprehensive coverage of a large supermarket. Response Time: The response time of diff usion- based detectors can be slower compared to aspirated systems. This delay might not be optimal for preventing loss of refrigerant charge in a rapid leak.


Aspirated Monitoring Systems: Pros:


High Sensitivity: Aspirated systems, also known as active air sampling systems, can detect even very low concentrations of refrigerant gases. They use a pump to continuously aspirate air samples, ensuring high sensitivity and quick response to leaks. Wide Coverage: Aspirated systems are designed to cover larger areas. They use a network of sampling points, allowing them to monitor extensive spaces eff ectively. This feature makes them suitable for large supermarkets with complex refrigeration systems.


Remote Sampling: Aspirated systems can sample air from various locations, which is particularly useful in supermarkets where refrigeration units might be dispersed across diff erent sections of the store. Cons: Complexity: Aspirated systems are more complex than diff usion-based detectors. They require careful installation, calibration, and regular maintenance to ensure optimal performance. Higher Cost: Aspirated systems tend to be more expensive upfront due to their complexity and capabilities. However, their advanced features might justify the higher cost for larger supermarkets with extensive refrigeration needs.


Diff usion or Aspirated background detection? For smaller supermarkets with limited space


and straightforward refrigeration setups, diff usion-based detectors could be a suitable and cost-eff ective choice. However, for larger supermarkets with complex refrigeration systems and a need for comprehensive coverage and high sensitivity, aspirated monitoring systems are the preferred option despite their higher initial cost and installation complexity. The choice between these systems ultimately depends on the specifi c requirements, budget, and size of the supermarket.


Localised leak detection Once a refrigerant leak is detected using the


adopted background monitoring solution, it’s important to then pin-point the leak itself so an eff ective repair can be made. Portable electronic devices and ultrasonic detectors are commonly used.


Portable Electronic Leak Detectors: Portable, handheld electronic leak detectors


can detect a wide range of gases, including refrigerants. Technicians can move these devices close to potential leak points, and the detector will alarm when it detects gas concentrations above a certain threshold. They are commonly used in HVAC and refrigeration systems.


Ultrasonic leak detectors: Ultrasonic leak detectors can also be used to


detect the sound generated by a leak. They convert the ultrasonic sound waves into audible signals, helping technicians pinpoint the exact location of the leak. These detectors are benefi cial in detecting leaks in compressed air systems and vacuum systems.


Integrated IoT solutions


Cloud-based monitoring solutions collect data from sensors and devices installed in the supermarket’s refrigeration systems or external monitors. These solutions off er remote access, allowing authorised personnel to monitor the system’s status from anywhere. Cloud platforms often come with analytics tools that provide insights into system performance and trends.


BMS software can integrate refrigerant monitoring as part of its functions. BMS continuously monitors various building systems, including refrigeration. It provides real-time data and can be confi gured to send alerts via email, SMS, or in-app notifi cations when leaks are detected.


As supermarkets navigate the complexities


of environmental responsibility and compliance, investing in advanced refrigerant leak detection solutions is not just a choice but a necessity.


By adopting eco-friendly refrigerants and


leveraging cutting-edge detection technology, supermarkets can ensure both environmental preservation and operational effi ciency. Moreover, staying compliant with global


regulations not only secures the future of our planet but also fosters a positive image for the supermarket industry as a whole. Embracing these changes today paves the way for a sustainable tomorrow.


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