ACR Journal

acrjournal.uk CMYK / .ai CMYK / .ai CMYK / .ai 11 NEWS Digital refrigeration manifolds from testo • Buy a testo 550 or 557 refrigeration manifold and get a free Wera multitool included. Worth over £45! • Hurry! Offer only available until 31 August 2020 Available from participating dealers only Please see website for terms and conditions www.testo. com/e -UK/w era WHO CHANGES COVID-19 VENTILATION STANCE The Building Engineering Services Association (BESA) says facilities managers should ensure ventilation strategies are still fit for purpose after the World Health Organisation (WHO) acknowledged the threat posed by airborne transmission of the coronavirus, following months of warnings from ventilation and air quality experts. WHO ocials said “evidence was emerging” that Covid-19 can spread through the air in enclosed spaces. A number of scientists have pointed out that building ventilation systems will be crucial in limiting the chances of “super spreader” events in enclosed environments that could spark a second wave of the pandemic. BESA said this supported the position taken by many indoor air quality experts that facilities managers should be revisiting their ventilation strategies to minimise possible transmission risks as more buildings reopen following the lockdown period. The WHO’s original position was that Covid-19 did not remain in the air, but was transmitted via droplets emitted when people cough or sneeze falling onto surfaces. AQUAFORCE CHILLERS WIN COUNCIL VOTE Carrier water-cooled screw chillers, with a combined cooling capacity of more than 1.4MW, have been installed at Wiltshire County Council’s headquarters. Two high performance AquaForce 30XW-V variable speed units were selected for the project in Trowbridge. The chillers are based on inverter-driven twin-rotor screw compressors, which allow the cooling capacity to be precisely matched to the changing building load, significantly reducing power input. Automatically adjusting the capacity results in Eurovent- certified industry leading values for European Seasonal Energy Eciency Rating (ESEER) of up to 8.