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Rapid growth of internet services and mobile devices has led to more and larger cloud data centers. The hyper scale cloud data center consumes enormous amount of electricity and cause pressure to operation cost and infrastructure management. The industry has made great progress in improving power usage effectiveness through innovation and infrastructure upgrade. Recent research is focusing on dynamically...
This paper investigates the significance of thermal management energy consumption on the range of electric vehicles. It is necessary to combine consumption models of powertrain components such as the electric machine, power electronics and high voltage battery that take into account trip-based information containing a predicted speed profile and elevation data with a thermal management system that...
In recent years, the demand for compute capability has increased rapidly, and data centers all over the world are consuming much more power than before. Data centers across the globe consume around 100 GWh and it is expected to increase by 30% by 2016. In 2012, the increase in data center energy consumption in the United States and China was 800MWh and 500MWh respectively, based on Forest & Sullivan...
Air-cooled Data Centers absorb heat in central room air conditioners or air handlers and most commonly reject the heat through cooling towers to ambient air. The energy efficiency of the overall cooling system is determined by the energy efficiency of its components, its thermodynamic design and layout, and the protocol for its control, operation and its operational set points. The current work is...
The paper describe the theoretical and practical information of the thermoelectric Peltier modules. The aim of this work is to design thermoelectric cooling unit. Mobil cooling unit is intended to transport blood and blood platelets. Both materials have different storage temperature. Mobil cooling unit ensures the constant temperature by way of thermoelectric module in case the power supply is available...
One of the novel methods for the thermal management of multi-core processors is power multiplexing (also known as core hopping) which involves dynamical change of the locations of active cores within the chip at fixed time intervals. The power multiplexing technique helps in reducing the number of hotspots on the chip by providing a spatially uniform thermal profile which in turn lowers the maximum...
Advanced thermal management system (TMS) has the potential to increase the life of the cooling system components as well as decrease fuel consumption and carbon emissions. In the hybrid electric armored vehicle (HEAV), the combination of prime power and stored energy powers the vehicle driving system and advanced weapons subsystems. Because of the complicated energy transfer and the substantial heat...
This paper studies hot spot and thermal coupling problems in future multicore architectures as CMOS technology scales from 65 nm feature size to 15 nm. We demonstrate that the thermal coupling between neighboring cores will dramatically increase as the technology scales to smaller feature sizes. The simulation studies were based on solving the heat equation using the analytical Green's function method...
This paper presents some observations and recommendations about thermal management based on my experience as a researcher, teacher, and consultant. These comments are focused mainly on air cooling, at the system and board level. It is important to integrate the testing and CFD approaches to problems and have their results interpreted by someone well-schooled in heat transfer. Data doesn't solve a...
Server's capabilities are increasing at or beyond the rate of performance improvement gains predicted by Moore's Law for the silicon itself. The challenge for the information technology (IT) owner is housing and operating all of this computational power in the data center. With more computational power in each unit volume, the industry is experiencing a significant increase in power density and hence...
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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