ENERGY SAVING


unexpected temperature rise accelerates bacterial growth and spoilage, leading to massive stock losses and threats to public health. Pharmaceuticals and vaccines also require strict temperature control to ensure their efficacy and safety before they reach the consumer. Door controls ensure this stability by drastically limiting the thermal impact of access. Reduced Maintenance and Downtime: The ice build-up caused by air infiltration does more than just reduce efficiency – it creates a maintenance burden. Frequent ice accumulation necessitates regular manual scraping or costly, energy- intensive defrost cycles, leading to significant downtime for the facility. By minimising warm air ingress, effective door controls reduce the frequency of maintenance issues, protecting the lifespan of all refrigeration components. Compliance and Safety: Cold storage facilities must adhere to stringent regulations like the Hazard Analysis and Critical Control Point (HACCP) system. Door controls are a key factor in proving compliance by maintaining the required temperature envelope. Furthermore, door safety features, such as emergency release mechanisms, secure locking systems, and quick exit capability, are essential to protect personnel working in the often-harsh, temperature-controlled environment.


Behavioural controls and automation Even the most technically superior, well-insulated door is only as good as the operating policy governing it. Human error


– staff inadvertently leaving a door ajar while moving pallets or being distracted – is a constant source of energy waste. This is where active door control systems become paramount.


Door Open Alarms are an example of a simple but highly effective behavioural control. These systems use sensors to monitor door position and trigger an immediate, loud, and sometimes custom-voiced audible alarm if the door remains open past a pre-set threshold time. This immediate feedback compels staff to close the door, instituting a ‘Good Cold Room Door Policy’ where human behaviour is managed by technology.


In conclusion, door controls are the active, dynamic barrier that sustains the entire cooling environment. From the basic construction of insulated panels and airtight seals to advanced high-speed mechanisms and audible alarm systems, every aspect of door control is focused on one goal: maintaining the critical thermal separation with maximum efficiency. By investing in these technologies, businesses not only slash energy costs and reduce their carbon footprint but also secure their most valuable assets – their temperature- sensitive products – ensuring quality, safety, and long-term profitability.


X https://gbcontrols.co.uk/


'A cold room door is not just a physical barrier; it is the most significant thermal weak point in the entire


structure.'


RS-51 (R470B)


NEW LOW GWP DROP- IN REPLACEMENT FOR R404A & R507 GWP BELOW 750


GWP more than 80% below R404A & ca half R448A & R449A


Non-flammable & low toxicity


Lowest GWP replacement for R404a & R507 on the market Similar performance to R404A & R507 Lower discharge pressure than R448A & R449A Compatible with R404A & R507 lubricants


Minimal changes needed to equipment when replacing R404A or R507 Suitable in OEM & retrofit applications


RS-51 can replace R404A and R507 in many of the applications where these refrigerants are found including supermarkets, cold stores, freezers, ice machines, refrigerated transport, beer cellars, freezer cabinets, transportation of foodstuffs, freeze dryers & others


RS-53 (R470A)


THE ONLY NON- FLAMMABLE DROP-IN REPLACEMENT FOR R410A ON THE MARKET


R410A split air-conditioning unit converted to RS-53 & operating satisfactorily without any problems


Low direct GWP (less than half) Drop-in replacement for R410A in existing equipment


Non-flammable & low toxicity Similar energy efficiency to R410A Minimal changes to hardware during retrofitting Close match for R410A in cooling capacity


Similar discharge pressure & temperature to R410A


Compatible with lubricants commonly used with R410A


RS-20(R480A) LOW GWP


REPLACEMENT FOR R134a


GWP BELOW 300 No changes to equipment required GWP below 300 & 80% less than R134a Non-flammable & low toxicity Similar performance to R134a


An almost perfect performance match to replace R134a in vehicle air conditioning Similar discharge pressure & temperature Equivalent cooling capacity


Suitable to replace R134a across the board of applications including, but not restricted to, refrigerated transport, cold stores, supermarkets, cellar cooling, dairy chillers, vending machines etc


www.refsols.com Refrigerant Solutions hp ACR Mar25.indd 1 25/2/25 11:00


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