نتایج جستجو برای: thermal control
تعداد نتایج: 1531378 فیلتر نتایج به سال:
by Walfre Franco Theoretical, numerical and experimental studies of hydraulic, thermal and control aspects in fluid networks are presented. First, a one-dimensional differentialalgebraic nonlinear model, based on first principles, representing the time-dependent behavior in networks is developed. A thermal-hydraulic analysis of a small network with three common control strategies for heating an...
This work presents the results of a project aimed at verifying the applicability of industrial model predictive control (MPC) to thermal Power Plants. The research is motivated by the need to improve the efficiency of power plants so as to cope with the high levels of competition induced by the deregulation of the energy market. A detailed plant simulator, already used for operators training an...
An assessment of the thermal control mechanisms applicable to solid breeder blanket designs under ITER-like operating conditions is presented in this paper. Four cases are considered: a helium gap; a sintered block Be region; a sintered block Be region with a metallic felt at the Be-clad interface; and a Be packed bed region. For these cases, typical operating conditions are explored to determi...
In this paper the authors propose and verify an approach to control heat flow in machine tool components. Thermal deformations are a main aspect that affects the accuracy of machining. Due to goals of energy efficiency, thermal basic loads should be reduced. This leads to inhomogeneous and time variant temperature profiles. To counteract these negative consequences, material with high melting e...
One of the most prominent industrial applications of heat transfer science and engineering has been electronics thermal control. Driven by the relentless increase in spatial density of microelectronic devices, integrated circuit chip powers have risen by a factor of 100 over the past twenty years, with a somewhat smaller increase in heat flux. The traditional approaches using natural convection...
this study investigated the impact of explicit instruction of morphemic analysis and synthesis on the vocabulary development of the students. the participants were 90 junior high school students divided into two experimental groups and one control group. morphological awareness techniques (analysis/synthesis) and conventional techniques were used to teach vocabulary in the experimental groups a...
The continual increase in microprocessor transistor densities has led to major challenges in on-chip temperature management. Examining how emerging architectural paradigms scale from a thermal-aware design perspective is critical for sustaining high-performance computing. In this paper we explore a novel dynamic thermal management technique for simultaneous multithreaded processors. Unlike prio...
Thermal expansion properties of solids are of fundamental interest and control of thermal expansion is important for practical applications but can be difficult to achieve. Many framework-type materials show negative thermal expansion when internal cages are empty but positive thermal expansion when additional atoms or molecules fill internal voids present. Here we show that redox intercalation...
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