ACR Journal

Bock LG compressor range gea.com/vap The solution for low-GWP HFO refrigerants. The new Bock LG compressors – with optimized driving gear especially designed for low-GWP HFO refrigerants. Reliable, robust and more durable in the demanding application with HFO refrigerants. We call this The °Clever Art of Cooling . NEW 05 NEWS Airedale's DeltaChill R32 chiller boosts BREEAM credits Airedale International’s DeltaChill R32 air cooled chillers are now eligible for 3 BREEAM credits. The manufacturer says this highlights the range’s energy ecient qualities and will help contractors achieve environmental targets on new-build projects. BREEAM aims to reduce the life cycle impact of new buildings on the environment by awarding credits for products used within the building’s design which reduce the building’s carbon footprint. DeltaChill R32 is now eligible for 2 credits due to the direct eect life cycle CO 2 equivalent emissions (DELC) of ≤ 100 kgCO2e/kW and 1 credit due to all systems being hermetically sealed, with a tested leakage rate of less than 3g/year. Airedale uses its own annual refrigerant leakage rate, which specifically relates to Airedale products, as opposed using to the generic leakage value stated in BREEAM guidelines for DELC calculations. All units undergo a leak test using a device which would detect any escaping gas on a brazed joint that would equate to more than 1g / year. Using these results, Airedale says it is able to calculate a more accurate estimate for the annual leakage rate. This calculated value was significantly lower than the default value provided by BREEAM and means the DELC calculated value for R32 DeltaChill units is under 100kg CO2e/kW, thus making it eligible for 2 credits, which is added to the 1 credit given for systems being hermetically sealed. MITSUBISHI ELECTRIC ADDS COMMERCIAL CO 2 HEAT PUMP Mitsubishi Electric has introduced a new commercial heating system running on CO 2 (R744) refrigerant, which it says delivers hot water at up to 90°C and can help businesses increase the eciency of hot water production whilst reducing their carbon footprint. The 40kW Ecodan QAHV high temperature air source heat pump is designed for commercial sanitary hot water applications in hotels, leisure centres, hospitals, care homes, restaurants, schools and universities. “This new unit is the perfect choice for organisations looking to meet their carbon reduction plan, and oers a low carbon solution that utilises the natural and stable refrigerant CO 2 ,” said James Chaplen, Senior Product Manager responsible for the QAHV. “These high performing units deliver an environmentally clean solution that enables compliance to strict local planning laws and helps to boost BREEAM points.’’ Capable of flow temperatures from 55°C up to 90°C, the QAHV can produce large delta T’s when it maintains an inlet water temperature lower than 29°C. This also enables it to achieve a Coecient of Performance (COP) of 3.88. Seasonal eciencies of the QAHV when producing sanitary hot water at 65°C have also been calculated to be 3 which, when compared to a typical gas boiler, can equate to overall carbon savings of up to 78%. These high levels of eciency also provide significant savings in running costs and carbon emissions against direct electric heating systems.