EVENTS AND EXHIBITIONS
INCORPORATING COLD CHAIN
Energy use There are many options to reducing the energy usage of refrigeration and air-conditioning systems and plant, for example variable speed drives on motors, variable super heat control, defrost on demand, automatic purging of non-condensable, and electronic expansion valves to reduce the band of temperature control. The full benefit of the mentioned energy saving interventions can only be achieved if the system is operating at its designed parameters. This includes fully charged with refrigerant, temperature and pressure controls correctly set, no bypass on coiling coils, fouling of coils within allowed limits, and temperature control sensors correctly located. Some of the inaccuracies can be attributed to the improper commissioning of the plant.
The ClimaCheck system showcased by Klas Berglof analyses the performance of the plant by measuring pressures, temperatures and power input at selected locations and compares it with the optimum thermodynamic performance of the plant. With the measured parameters, the ClimaCheck calculates COP, detects irregular pressures and temperatures, and benchmarks the operating patterns unique to the system and site conditions. A close technical analysis based on a thorough understanding of the thermodynamic performance of the plant will pinpoint areas for optimisation of energy efficiency. ClimaCheck and the assessment service of Berglof have been used by leading
The award-winning Eptablue water loop system connected to a vending cabinet with a CO 2 unit. compressor manufacturers to assess field performance of new products and existing products with new refrigerants.
Refrigeration trends in retail Reduced energy use with the smallest carbon footprint was promoted by many of the exhibitors aimed at the retail trade.
The Viessmann Group, with 11 600 employees, 22 production companies in 11 countries, and a turnover of EUR2.2-billion, showcased the Tecto Refrigo series of condensing units with packaged cold rooms and a range of refrigerated vending cabinets. The R290 charged, Deli-135 cabinet caught the attention of many visitors. The selfcontained Deli-135 is ideal for convenience
At the FCE stand, Dr Luca Buglia( left) and Gianluca Di Stasio.
The Witt stand, a port of call for all industrial refrigeration engineers.
Behr’ s range of covers for retrofitting to open top refrigerated island freezers or cabinets.
Steve Long( left) and Naeem Fakir from GEA South Africa at the massive GEA stand.
Witt showcased the latest in pumps and a SAV pressure vessel package.
The large Hansen valve dominated the roof space. The line up of Bock compressors attracted many to the GEA stand.
28 www. coldlinkafrica. co. za COLD LINK AFRICA • January | February 2017