Waste Heat Reuse

Servers have a wide range of energy use, depending on traditional use or specialized for applications, with a typical server using around 350 watts of power.  This average server also produces about 1,200 BTUs of heat every hour and for years many of us have aimed at capturing and reusing this heat.  With potentially 50 servers or more in a rack, this…

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Energy Codes & Standards

In the United States there are two main documents that pertain to energy.  The main one is the model code International Energy Conservation Code (IECC), developed by the International Code Council.  47 states have adopted it, as well as the District of Columbia, Puerto Rico, and the U.S. Virgin Islands.  The other is Standard 90.1,…

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Lights Out

Lighting in the data center has been a target in data centers for a while, as they can have upwards of 1.5 watts per square foot of white space.  While this power density may seem small by comparison with the computing loads, any lighting with over 1.0 watts per square foot is likely higher than…

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Energy Management Systems

Have you heard the phrase ‘you can’t manage what you can’t measure?’ This is true for your data center, and having an energy management system in place with your hands on the reigns gives you a good means to measure and manage. An energy management system (EMS) is to let you see where your energy…

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Warmer Chilled Water on Existing Systems

So we are looking to save energy, and one of those ways is increasing the chilled water temperature.  But how does that save anything?  Increasing the chilled water temperature brings it closer to the condenser water temperature and thereby reduces the amount of work (lift) a chiller has to perform.  Since the chiller usually has…

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Investing in Fuel Cells

Fuel cells have been providing energy to the data center industry for over a decade, with many performing far beyond expectations.  They were chosen for their reliability with constant loads and efficiency, operating to supplement or replace part of power drawn from the utility.  Another touted benefit is their environmental impact, reducing the carbon footprint…

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