Search results for "Thermal management"
showing 6 items of 6 documents
Batteries for Aerospace: A Brief Review
2018
This paper presents a brief overview on batteries for aerospace application. In particular, More Electric Aircraft (MEA) and All Electric Aircraft (AEA) concepts are introduced at first, together with their main advantages and drawbacks. Subsequently, opportunities and issues related to the employment of batteries on aircrafts are presented and briefly discussed. Reference is then made to aircraft power system architectures and battery technologies, as well as on the state-of-the-art of battery management systems, state-of-charge and state-of-health estimations, and thermal management.
Metabolic Status and Reaction to Heat of Normal and Tumor Tissue
1995
The occurrence of differential heating and differential thermal sensitivity between malignant tumors and normal tissues is thought to be due to limited heat dissipation and energy depletion in many solid tumors which in turn results from an inadequately functioning tumor microcirculation (Jain and Ward-Hartley 1984; Song 1984, 1991; Vaupel and Kallinowski 1987; Reinhold 1988; Vaupel et al. 1988a; Vaupel 1990). As a consequence of the latter pathophysiological condition, supply and drainage function are restricted in many solid tumors or, at least, in some tumor areas, thus creating a hostile metabolic microenvironment characterized by tissue hypoxia, acidosis, and energy depletion. Thermal …
Layered gadolinium hydroxides for low-temperature magnetic cooling
2015
Layered gadolinium hydroxides have revealed to be excellent candidates for cryogenic magnetic refrigeration. These materials behave as pure 2D magnetic systems with a Heisenberg-Ising critical crossover, induced by dipolar interactions. This 2D character and the possibility offered by these materials to be delaminated open the possibility of rapid heat dissipation upon substrate deposition.
Q -switched and modelocked all-fiber lasers based on advanced acousto-optic devices
2011
The interest in all-fiber lasers is stimulated by the inherent advantages they have over bulk lasers in aspects such as heat dissipation and robustness. The performance of Q-switched and modelocked fiber lasers can benefit enormously from the development of all-fiber configurations. A fiber laser with strictly all-fiber components can fulfil the requirements of mechanical stability, low maintenance, enhanced power efficiency, simplified assembly process, and low cost. In this framework, recent developments infiber acousto-optic devices are reviewed that have demonstrated new possibilities for actively Q-switched distributed feedback fiber lasers, modelocking lasers and doubly active Q-switc…
Design and test of a prototype silicon detector module for ATLAS Semiconductor Tracker endcaps
2005
The ATLAS Semiconductor Tracker (SCT) will be a central part of the tracking system of the ATLAS experiment. The SCT consists of four concentric barrels of silicon detectors as well as two silicon endcap detectors formed by nine disks each. The layout of the forward silicon detector module presented in this paper is based on the approved layout of the silicon detectors of the SCT, their geometry and arrangement in disks, but uses otherwise components identical to the barrel modules of the SCT. The module layout is optimized for excellent thermal management and electrical performance, while keeping the assembly simple and adequate for a large scale module production. This paper summarizes th…
Thermal Analysis of the Solar Orbiter PHI Electronics Unit
2020
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