With the increasing clock rate and transistor count of today’s microprocessors, power dissipation is becoming a critical component of system design complexity. Thermal and power-delivery issues are becoming especially critical for high-performance computing systems. In this work, we investigate dynamic thermal management as a technique to control CPU power dissipation. With the increasing usage...

I show how one can estimate the shape of a thermal performance curve using information theory. This approach ranks plausible models by their Akaike information criterion (AIC), which is a measure of a model’s ability to describe the data discounted by the model’s complexity. I analyze previously published data to demonstrate how one applies this approach to describe a thermal performance curve....

Energy has emerged as one of the most significant and universal concerns society will face in this century. Currently, the world relies on fossil fuels to produce 86% of its energy. However, the combustion of fossil fuels generates greenhouse gases, a major factor responsible for global warming. Because concentrated solar thermal (CST) systems offer a pathway to a cost-competitive alternative t...

An important issue in the design of systems using borehole heat exchangers is to find costeffective methods to construct the borehole heat exchanger so that heat can be injected or extracted from the ground without excessive temperature differences between the heat carrier fluid and the surrounding ground. This paper presents an overview of experiences and current activities in this field.

This study examined whether the thermo-modeling process suits the thermal properties of the material constituting mouth-formed mouthguards (MGs). Five mouth-formed MGs were compared: four commercially available MGs (SDI™, Gel Nano™, Opro Shield Gold™, and Kipsta R300™) and one prototype. Differential scanning calorimetry was used to determine melting (T(m)) and crystallization (T(c)) temperatur...

Abstract Values of energy supply and demand vary within the same timeframe are not equal. Consequently, to minimise amount wasted, there is a need use various types storing systems. Recently, one can observe trend in which phase change materials (PCM) have gained popularity as that store an excess heat energy. In this research, authors analysed paraffin wax (cheese wax)’s capability PCM materia...

the fluid flow and heat transfer in a three-dimensional microchannel filled with al2o3- water nanofluid is numerically investigated. the hybrid scheme is used to discretize the convection terms and simpler algorithm is adopted to couple the velocity and pressure field in the momentum equations. the thermal and flow fields were analyzed using different volume fractions of nanoparticles and diffe...

Thermoregulation and thermal sensitivity of performance are thought to have coevolved so that performance is optimized within the selected body temperature range. However, locomotor performance in thermoregulating crocodiles (Crocodylus porosus) is plastic and maxima shift to different selected body temperatures in different thermal environments. Here we test the hypothesis that muscle metaboli...

Corrections Page 17, Table 6: The in situ U-value from Lauriston Place for single glazing with secondary glazing has actually been 1.6 W/m 2 K instead of 2.3 W/m 2 K. Clarifications The U-values in this report are measured at the centre of the glass pane, and are not whole-window U-values; except for the U-value measured by the National Physical Laboratory, refer to Appendix 1, which is a whole...

Power has become the primary design constraint for systems ranging from server computers to handhelds. As semiconductor technology scales down, leakage power becomes significant. Leakage power is exponentially dependent on temperature. Therefore, future design studies call for temperature-aware power modeling and coupled power and thermal management due to the temperature dependence of leakage ...