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Archive for September 20th, 2013

Solar PV energy for new IT building?

Friday, September 20th, 2013

Construction on the IT Division’s new building commences early in 2014. In line with the goal of constructing and operating a “green” building, the IT Division has, along with the Facilities Management Division, ensured that the design incorporates the necessary for solar PV arrays on the roof and integration into the energy supply. IT has requested the Centre for Renewable and Sustainable Energy Studies (CRSES) to model solar power generation for the building and to calculate the financial pay back period.

The intention is that, based on the models, the IT Division will approach the Finance Division for a loan to incorporate solar energy generation into the building construction project.

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Posted in ICT Building, Renewable Energy | No Comments »

New electricity meters in the main data centre

Friday, September 20th, 2013

The IT Division, with the help of Facilities Management, has installed two new energy meters in the main data centre (DC) that will enable us to monitor energy consumed by all equipment within the DC, including the cooling and ventilation systems. The meters will enable us to calculate the Power Usage Effectiveness (PUE) of the DC, which is the ratio of energy consumed by all equipment to that consumed by computing and networking equipment.

The DC’s PUE is in the range 2 to 2.5 depending on external ambient temperature. This means that for every watt going to the computers, another watt or more is going to cooling and ventilation equipment. Various interventions will be undertaken to reduce PUE and minimise energy consumption. At present the DC consumes between 1.1 and 1.3 GWh per annum and the energy bill is now the responsibility of the IT Division.

Under the new electricity accounting regime, the monetary value of energy savings will accrue to the IT Division for one year, and can be invested in further energy efficiency.

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Posted in Energy efficiency, Energy efficiency: data centre | No Comments »