Cold Link Africa March / April 2020 | Page 23

PROJECT INCORPORATING COLD CHAIN In store pipe runs needed to be light because of confined space and exposure to consumers. Low Temperature cabinets have double glazed glass doors with heaters. levels of CO 2 by different coloured lights. by the Guardian Controls Plant The plant room sensor also activates an Management System with visual exhaust fan in the event of a severe CO 2 monitors for management staff and leakage. The trading area has no CO 2 with remote access by senior staff of sensors. In the most unlikely event of the Mainstream Refrigeration. The RH and entire CO 2 charge of 500kg discharging ambient temperature in the store is also into the trading area, because of its size, monitored by the Guardian Controls PMS the concentration will not exceed the to keep store management informed of safety limit for human occupancy. shopper comfort. Being close to the Table Bay Hotel, SAFETY AND NOISE POLLUTION the noise level of the roof mounted The CO 2 safety levels, operating gas coolers at the V&A store was of parameters, temperature alarms, concern and was overcome by fitting power usage, cabinet temperatures ebmpapst Axitop and EC variable are all monitored and controlled speed fans. COLD LINK AFRICA • March/April 2020 In the event of a severe CO 2 leak in the plant room a fan automatically exhausts the CO 2 from ground level via a duct. A CO 2 sensor is mounted close to the inlet to the exhaust duct. www.coldlinkafrica.co.za 23