The results show that temperature difference of fresh air under mode 2,3,4 increases 1.0～2.4℃,compared to mode 1.Also,efficiency of heat exchanger raises 7.6%～16.2%.
Analyses of the EAWJ seasonal variation and the atmospheric meridional temperature gradient in the mid-upper troposphere indicate that the EAWJ center always corresponds to the largest meridional temperature gradient in the mid-upper troposphere,suggesting that the seasonal variation of EAWJ is a response to the meridional temperature difference.
Analyzes the principle and questions of pressure difference control and temperature difference control of two control modes in central air-conditioning system.
The range of flow parameters include inlet Reynolds number(Re =20000~80000),rotation number (Ro=0-0.3) and difference in temperature( ΔT = 20 ~ 100 K).
When the difference in temperature between the tube side and shell side is 54℃ ,the difference in expansion is 2. 22 mm, the maximum stress of the tube sheet is 294 MPa, in the range of allowance stress.
When the difference in temperature between the tube side and shell side is 54℃ ,the difference in expansion is 2. 22 mm, the maximum stress of the tube sheet is 294 MPa, in the range of allowance stress.
Results: The result of correlation analysis for cerebral apoplexy and air pressure,air temperature showed : the correlation coefficient of cerebral apoplexy and difference in temperature,difference in pressure,daily range of pressure had high reliability.
and was 0 2698(P<0 005),0 47675(P<0 0005) respectively to metamorphic rock,friable rock of quaternary system,and was 0 2562(P<0 01) to annual mean temperature differential.
The test results showed that with belt water-shower cooling, the rosin resin products in the shape of 10 mm square and 1. 5～2.0 mm thick can be continuously obtained under such operating conditions as the resin liquid temperature 260～270℃ , heat transfer temperature differential 90～100℃. and total heat transfer coefficient 200～300 W/m2 ·K.
as using regenerative baking - air and gas preheat to 1 273 K, the temperature of baked lining is up to 1 300 K and temperature differential of lining circle is less than 20 K.
SST fluctuated periodically in the last glacial maximum,and the SST was 23.60~26.86 ℃ in winter,and 28.45~29.63 ℃ in summer,with seasonal temperature differences of 2.34~5.09 ℃.
SST was 23.48~27.57 ℃ in winter,28.82~29.73 ℃ in summer and 2.16~5.34 ℃ in seasonal temperature differences in the MIS 3.Six obvious short-term SST descending events have been recognized in the last glacial.
SST varied greatly since the last glacial. The post-glacial SST was estimated to be 24.85~26.23 ℃ in winter,and 28.81~29.36 ℃ in summer,with seasonal temperature differences of 2.66~4.47 ℃.
Results In the patients with abnormal thermographic results, the mean body surface temperature differences were 1.13±0.34, 1.46±0.58, and 2.34±1.20 in the mild, moderate, and severe subgroups, respectively (P<0.0001, ANOVA).
The experiment results show that the realization of thermal isolation structure in substrate-free FPA increases the temperature rise of the deflecting leg effectively, whereas the noise equivalent temperature difference (NETD) is about 200 mK.
At supercritical pressure, the temperature difference between the wall and the fluid increased near the pseudo-critical temperature, but the increase of wall temperature was less than that of departure from nucleate boiling at sub-critical pressure.
When pressure is closer to the critical pressure, the temperature difference between the wall and the fluid increased greatly near the pseudo-critical temperature.
The model used involves the nonequilibrium thermodynamic properties of superparamagnetic systems, such as the difference in temperature between the spin subsystem and the lattice caused by a sweeping magnetic field.
In the improved model, the effects of seawater bubbles, droplets and difference in temperature of air and sea interface (DTAS) on the emissivity of sea surface covered by whitecaps are discussed.
This is in accord with the north-south difference in primary production noted by other workers which, in turn, seems atributable to the north-south difference in temperature structure.
The daily carbon dioxide absorptions of the ecosystems increase with increased diurnal temperature differences and higher diurnal temperature differences result in higher carbon dioxide exchanges.
The photophoretic motion of a solid spherical particle in a viscous fluid is described theoretically in the Stokes approximation for small Péclet and Reynolds numbers and large temperature differences near the particle.
The droplet drift proceeds in a viscous incompressible liquid under conditions of arbitrary temperature differences between the particle surface and a region away from it.
温差
temperature difference
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