Due to the superlinear dependence of leakage power consumption on temperature, and spatial variations in on-chip thermal profiles, methods of leakage power estimation that are known to be accurate require detailed knowledge of thermal profiles. Leakage power depends on the integrated circuit (IC) thermal profile and circuit design style. Here, we show that piecewise linear models can be used to...

Power is rapidly becoming the primary design constrain for systems ranging from server computers to handhelds. In this paper we study microarchitecture-level power modeling and management with temperature and voltage scaling. We develop an accurate temperature-dependent leakage power model and efficient temperature calculation, and show that leakage energy and total energy can be different by u...

in this article, modeling and optimization of power consumption of two–stage compressed airsystem has been investigated. to do so, the two – stage compressed air cycle with intercooler offajr petroleum company was considered. this cycle includes two centrifugal compressors, ashell, and a tube intercooler. for modeling of power consumption, actual compressors isentropicefficiencies and intercool...

objective: the main objective pursued in this paper is to investigate the energy consumption for drying of potato slices using vacuum-infrared drying method. methods: drying of potato slices with the thicknesses of 1, 2 and 3 mm were conducted at vacuum levels of zero (without vacuum), 20, 80 and 140 mm [hg], infrared radiation at power levels of 100, 150 and 200 w in the three repetition. resu...

The equivalence between a noise source in combination with a resistance, and a thermal bath, is a part of fluctuation theory. This observation was the motivation for the author’s 1960 calculation of the power flow between modes of vibration excited by random noise sources. The resulting relation between power flow and uncoupled energy of vibration is therefore more than a thermal analogy; it is...

Thermal lensing in an end-pumped Nd : YLF rod, under lasing and nonlasing conditions, has been investigated. Under lasing conditions, a weak thermal lens, with dioptric power varying linearly with pump power, was observed. Under nonlasing conditions, where higher inversion densities were involved, hence relevant to Q-switched operation or operation as an amplifier, a much stronger thermal lens ...

This paper focuses on the comparison of the state-ofthe-art high power devices. A behavioral power loss model is developed to conduct electro-thermal simulation of these devices. The junction temperature is observed through simulation. The high power devices are compared for pulse application based on losses and thermal handling capability. Moreover, device operation condition (current, voltage...

We describe a simple design, laser-diode-pumped cw Nd:YAG active-mirror laser and present a thermal analysis of the crystal. A cw output power of 2.4 W and an M(2) beam quality value of less than 1.9 at an incident pumping power of 8.9 W were obtained. From the thermal analysis we predict that the output power can be increased by increasing the pump beam diameter and the pump power at a constan...

We report on the first hard X-ray detection of the Geminga pulsar above 10 keV using a 150 ks observation with the NuSTAR observatory. The double-peaked pulse profile of non-thermal emission seen in the soft X-ray band persists at higher energies. Broadband phase-integrated spectra over the 0.2–20 keV band with NuSTAR and archival XMM-Newton data do not fit to a conventional twocomponent model ...

The utility solar power plants were reviewed and classified by two basic groups: direct thermal concentrating solar power (CSP) and photovoltaic (PV). CSP as Parabolic Trough Collector (PTC) of 100 MW solar power plants (SPP) is suggested and suitable to provide solar thermal power for Qatar. Although, LFC had enough experience for small projects, it is still need to work in large scale plant s...