Replacement chillers reduce energy costs in City of London HQ

Meier
The replacement of two Hitachi chillers with two Hitachi Samurai 400 kW chillers at the UK headquarters of Xchanging in the City of London is expected to reduce energy consumption for chilled water by over 60 MWh a year, corresponding to over 7 t of carbon a year. Xchanging is an international business processing company with interests in insurance, financial service and other sectors. Extensive use of IT results in high internal heat gains. The chillers were specified by consulting engineers Parker Wilson Consulting and supplied by Walter Meier (Climate UK). The energy savings are made possible by continuous capacity control of the new chillers and being able to make better use of free cooling — enhanced by the introduction of inverter control on the supply air-handling plant. Graham Wilson of Parker Wilson explains, ‘The inclusion of inverters in the installation enables additional savings to be achieved through finer control of motor speeds in relation to chiller performance. Based on a conservative estimate of the chillers being fully modulated by 15% of their capacity, the Carbon Trust calculates this will deliver a further annual energy savings of 112 GWh, with a further carbon saving of over 13 t a year.
For more information on this story, click here: Nov08, 128
Related links:
Related articles:



modbs tv logo

Can I use my Air Conditioning system?

If your system hasn't been used in months it's an important question. 

New air-cooling system from Weiss Technik has unique four-stage safety concept and innovative thermal disinfection

The Coronavirus outbreak has increased awareness of hygienic room climate issues, ventilation and air-conditioning systems in public buildings. If planned poorly or not serviced properly, air conditioning units can quickly turn into transmitters of disease-causing germs.

Calendar
  • Calendar Icon
    11 November, 2020, 10:00 - 12 November, 2020, 16:00
    elemental
  • Calendar Icon
    20 November, 2020, 19:00 - 23:59
    CSA Awards