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8 Figure 1-2. Electricity share from Coal (Mills, 2013). The U.S. Environmental Protection Agency (2007) estimates that the ITC sector consumed about 61 billion kilowatt-hours (kWh) in 2006 (1.5 percent of total U.S. electricity consumption) for a total electricity cost of about $4.5 billion. This number is expected to grow tremendously according to the growth trends documented in the above report. Figure 1-3 shows the current and future data center market size. The data from 2007-2010 is the predicted data documented in the EPA’s report. Based on the extrapolation, predictions have been made for the growth in market by historic, current and improved efficiency. On examining the data center’s energy consumption, it is realized that about 50% of consumed total electrical power is spent on cooling equipment in data centers. This is represented in the form of a pie chart in Figure 1-4. Cooling is very critical to data centers. Electronic equipment performs better in cool environment and though data centers can now work at higher temperatures, cooling is still required and consumes significant amount of resources. The heat rejected by the electronic equipments is typically wasted. This heat has the potential to bePDF Image | CO2 HEAT PUMPS FOR COMMERCIAL BUILDING APPLICATIONS
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CO2 Organic Rankine Cycle Experimenter Platform The supercritical CO2 phase change system is both a heat pump and organic rankine cycle which can be used for those purposes and as a supercritical extractor for advanced subcritical and supercritical extraction technology. Uses include producing nanoparticles, precious metal CO2 extraction, lithium battery recycling, and other applications... More Info
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