نتایج جستجو برای: cooling curve
تعداد نتایج: 181782 فیلتر نتایج به سال:
Occupancy detection can greatly facilitate heating, ventilation and cooling and lightning control for building energy saving. Sensor-based occupancy detection is usually costly and may suffer from high false positive rates. As such, occupancy detection using load curve data has been proposed. Such methods, however, normally (i) rely on tedious and nontrivial model training process and (ii) do n...
Although post-heat treatment can improve the fatigue life of selective laser melting (SLM)-fabricated cobalt chromium molybdenum (CoCrMo) alloys, effect cooling conditions on properties such alloys remains unclear. In this study, we fabricated SLM CoCrMo alloy specimens and, after heat-treating them, cooled them either via furnace-cooling (FC) or air-cooling (AC). Subsequently, analyzed their m...
Thermoelectric cooling (TEC), in particular, can be combined with a heat sink for local cooling, but they also integrated into electronic chips point-to-point cooling. The study aims to develop dynamic model of system TEC glass window. main target this is TEC. black box modelling approach producing mathematical was selected based on the ARMAX and ARX that corresponds actual state system. best f...
In this study, the Li-ion batteries temperature increase during the discharge process was measured empirically and evaluated using numerical simulation. Moreover, the battery packs cooling using the water, air and water-nano composition fluids such as water-alumina, water-copper oxide, and water-gold was studied through numerical simulation. Accordingly, the battery cooling was simulated by CFD...
Although pre-cooling is known to enhance exercise performance, the optimal cooling intensity is unknown. We hypothesized that mild cooling opposed to strong cooling circumvents skin vasoconstriction and thermogenesis, and thus improves cooling efficiency reflected in improved time to exhaustion. Eight males undertook three randomized trials, consisting of a pre-cooling and an exercise session. ...
BACKGROUND Exposure to hand-arm vibrations is a known cause of the Hand-arm vibration syndrome (HAVS), a progressive syndrome beginning with sensory loss and leading to gangrene, making timely diagnosis essential. OBJECTIVES Assessment of the usefulness of 9 diagnostic parameters claimed as being of greatest value in the diagnosis of HAVS, and examination of the complementary diagnostic value...
We present near-infrared observations of the proposed counterpart of GRB 000301c. The K’ filter (2.1μm) light curve shows a well-sampled break in the decay slope at t ≈ 3.5 days post-burst. The early time slope is very shallow (∼ −0.1), while the late time slope is steep (−2.2). Comparison with the optical (R band) light curve shows significant differences, especially in the early time decay sl...
In this research multiple-regression analysis with stepwise selection method was employed for investigating the effectof vertical building envelopes solar radiation (Evr) on cooling energy consumption (E cooling) in residential sector.The high capacity of solar energy in semi-arid climate (Shiraz) can provide a part of buildings required energy. Dependson house orientations in two directions of...
Thrust chamber cooling system is an important issue in liquid missile systems. In this paper, two more applicable systems, that is, regenerative and radiation cooling systems are studied. Regenerative cooling systems, which are mostly used in high pressure thrust chambers, are normally in two forms, tubular wall structure and double wall structure. Tubular structure has mostly a square form str...
We present general analytic expressions for GRB afterglow light curves arising from a variable external density profile and/or a variable energy in the blast wave. The former could arise from a clumpy ISM or a variable stellar wind; The latter could arise from refreshed shocks or from an angular dependent jet structure (patchy shell). Both scenarios would lead to a variable light curve. Our for...
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