Opportunities for improving energy efficiency in existing data centres

Dublin is one of top locations for building DCs in Europe along with London, Frankfurt, Amsterdam, Paris and Sweden. In addition to this demand for new DCs there is an ongoing need for modernising of older DCs built in the early 2000s. Brendan Dervan writes on the opportunities for improvements in energy efficiency during data centre modernisation programmes. The advent of cloud computing, social media, online retail, video streaming, cloud storage and the like are driving the demand for new data centres (DCs). Dublin is one of top locations for building DCs in Europe along with London, Frankfurt, Amsterdam, Paris and Sweden. In addition to this demand for new DCs there is an ongoing need for modernising of older DCs built in the early 2000s. Besides the obvious need to employ newer ICT technologies many of DCs are approaching 20 years in operation and much of the M&E plant has reached end of life and needs to be replaced. This leads to opportunities to carry out other upgrade works including improvements in energy efficiency and resilience and various risk abatement works. Increased efficiency in power and cooling systems frees up power capacity for ICT equipment. This arti...

Implement overvoltage protection for safe operation of LED street lighting (MAGAZINE)

Outdoor SSL products operate in a decidedly harsh environment with frequent overvoltage spikes, explains Piotr Dudek, yet he provides a framework for driver specification that can allow reliable operation even in areas with frequent lightning strikes. Outdoor SSL products operate in a decidedly harsh environment with frequent overvoltage spikes, explains PIOTR DUDEK, yet he provides a framework for driver specification that can allow reliable operation even in areas with frequent lightning strikes. Energy-efficient LED light sources and associated electronic control gear or drivers offer numerous benefits such as long life, reduced maintenance, and controllable beam patterns in outdoor area-lighting applications such as street lights, but the outdoor application is environmentally harsh. In contrast to the situation with indoor lighting, the problem of possible overvoltages or surge voltages has to be addressed in the case of street lighting. A surge protection concept tailored to combat 10-kV spikes between L/N (line/neutral) and earth and 6 kV between L and N is therefore absolutely essential. The move to LED-based solid-state lighting (SSL) offers tremendous potential benefi...