Power Usage Effectiveness Revised – Part Two, Accounting for Water Use

August 5, 2015 Jack Pouchet

In the previous installment we began to explore ‘missing energy’ associated with the current release of PUE, namely the lack of accountability for the energy associated with owning, maintaining, and operating stand-by generators and the evaporative energy content of the water used in the cooling system. One unintended consequence has been the pursuit and reporting of PUE’s in the realm of 1.10 derived solely on utility sourced electrical energy. These PUEs fail to account for generator fuel and the energy associated with the water used in evaporative cooling. We captured Standby Generator Energy (SGE) in part one and today introduce…

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