نتایج جستجو برای: heatsink
تعداد نتایج: 152 فیلتر نتایج به سال:
The performance of a heatsink with and without staggered fins is analyzed in the present work. The effect of flow resistance on thermal behavior of staggered plate heatsinks were analyzed in the present study. Ansys FLUENT has been used for the present simulation. Authors have used three different models with and without staggered arrangement. The result shows advantage of staggered heat sink o...
A number of harsh-environment high-reliability applications are undergoing substantial electrification. The converters operating in such systems need to be designed to meet both stringent performance and reliability requirements. Semiconductor devices are central elements of power converters and key enablers of performance and reliability. This paper focuses on a dc-dc converter for novel avion...
The practical use of a discrete vessel thermal model for hyperthermia treatment planning requires a number of choices with respect to the unknown part of the patient's vasculature. This work presents a study of the thermal effects of blood flow in a simple tissue geometry with a detailed artificial vessel network. The simulations presented here demonstrate that an incomplete discrete descriptio...
Many of the wireless energy transfer solutions have targeted portable device charging that require features such as low profile, high efficiency, robustness to changing operating conditions and, in some cases, light weight. These requirements translate into designs that need to be efficient and able to operate without a bulky heatsink. Furthermore the design must be able to operate over a wide ...
A thermal interface material (TIM) is a crucial material for transferring heat from a die to a heatsink. We developed a new TIM composed of carbon nanotubes, silicon thermal grease, and chloroform. The thermal impedance of the TIM was measured using a new device based on thermometer principles to measure thermal impedance and resistance. This device consists of an alumina substrate, titanium tu...
The development of quantum-cascade lasers (QCLs) at 2.1 THz (l’ 141 mm), which is the longest wavelength QCL to date without the assistance of magnetic fields, is reported. This laser uses a structure based on resonant-phonon depopulation, and a metal–metal waveguide to obtain high modal confinement with low waveguide losses. Lasing was observed up to a heatsink temperature of 72 K in pulsed mo...
Many of the wireless energy transfer solutions have targeted portable device charging that require features such as low profile, high efficiency, robustness to changing operating conditions and, in some cases, light weight. These requirements translate into designs that need to be efficient and able to operate without a bulky heatsink. Furthermore the design must be able to operate over a wide ...
High-power 2.3m In(Al)GaAsSb–GaSb type-I double quantum-well diode laser arrays were fabricated and characterized. Linear laser arrays with 19 100m-wide elements on a 1-cm-long bar generated 10 W in continuous-wave (CW) mode and 18.5 W in quasi-CW mode (30 s/300 Hz) at a heatsink temperature of 18 C. Array power conversion efficiency peaked at 30 A and was about 9%. Device internal efficiency w...
The LED light source with low power and high luminous efficiency has been used in the automotive industry. In this study, a 15W LED fog lamp with better visibility and low price was developed using the SMD type LED modules. To this end, the thermal performance of the fog lamp was optimized by adjusting the number of heat sink fins, heat pipes and the emissivity of the heatsink. As a result, the...
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