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Shrinking reserves of natural resources as well as incisive environmental pollution oblige humanity to rethink its generally favored propulsion concept: in the last decade electro-mobility as a refurbished technology gained greater significance once more. Due to political course setting, many German cities are testing Electric Vehicles (EV) especially in public bus transport. To get to the bottom...
Since mechanical chillers account for a large fraction of electricity spent on cooling, data centers are looking for ways to reduce their usage. In High Performance Computing, a popular approach is to use readily available high temperature direct liquid cooling (HT-DLC) that allows for mechanical chiller free cooling of compute components. Additionally, it provides a means to re-use their waste heat...
Based on the Forest & Sullivan market survey. Data centers across the globe now consume around 100GWh of power and this number is expected to increase by 30% by 2016. With growth trends increasing and development expanding, IDC owners realize that small improvements in efficiency, from architecture design to daily operations, will yield large cost reductions over time. Cooling energy is a significant...
Cooling power occupies large portion of power consumption in a Data Center. Improving efficiency of cooling is one of the most efficient ways to reduce power consumption in a Data Center. However it is not obvious how we can find out sufficient but not too much operation of cooling facility. In this paper, we measure temperature of racks, servers and processors and power consumption of IT equipment...
IGBTs have seen a continuous gain of importance since their introduction into the market, not only from the installed number of devices but also from the served applications. The expansion from small single device applications through industrial inverters up to large traction motor drives and HVDC converters have been possible mainly thanks to the fact that the IGBT devices can be paralleled and in...
In deep submicron era, to prevent larger amount of SRAM from more frequently encountered overheating problems and react accordingly for each possible hotspots, multiple ideal run-time temperature sensors must be closely located and response rapidly to secure system reliability while maintaining core frequency. This paper presented a method to extract run-time temperature information from multiple...
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