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A measure of the volume of loose materials moisture thermodynamic method Analysis. VI assumed volume of gas through the adiabatic expansion process, the volume becomes V. , While the volume of gas through the V2 a V after the adiabatic compression process. Volume changes (V2 a V), pressure into P2, in the literature [3] shows that: = (Dan To] 1 two ....) A \. DEK-type stern 10 vii v iv iv ... P) a l32 measurement of such in April 2000 by the tense of 14) and (15) can be obtained 『V2 a V a / (V2 a V) a \: ± II V1 + V2 a V and from (1) may PlV1P0tV2 a V) to organize 』o (16) and (17) can be T2/tr ~ = ToP2 [1 + (V)]『 =!:] a -! Wong: ! lV1 + V2 a VJ-P2 [1 + (V2V)] assume that when the pressure is P2, U-tube liquid column height difference at both ends of h1. Then P2 = P0 +2 pgh1V1 + (V2 a V): V0 + h1 + V2 a V equation (3), (4),ugg milano, (19), (20) generation (1  , obstruction (Po +2 pgh) ( V0 + hs) + P0 (V2 a V.) / V0 + h1 + V2V \ 'a-_ \-J from (21) available h1, which was 1 and (V2 A V2), its generation-type (16),tory burch sale, can be T2. A '. ,, \ 'A pump, 0D, and snail Mourning snapped 500,600 temperature and the material roll jmL volume curve measurement and analysis of 5 (15) (16) (17) (1 (19) (ao) (21) Circuit 3 error curve 1 a by (22) calculated a theoretical error of 2 in the device measured error V】: 929 × 10 a ra3,ugg boots günstig, = 827 × 10 ~ ra3, U-shaped tube inner diameter of 0.004m, the smallest scale ruler as 1mm. By the U-shaped pipe wall caused by uneven error: As = 0.03s, 0 = 2 = 1mL, AP0 = 0.5P. . Experimental samples to a diameter of 0.5mm ceramic ball, the standard volume measured by the water displacement method, measurement error is 1%. During the experiment T, and T the temperature difference between the measured volume of the material shown in Figure 2. Figure 2 shows little difference in temperature, the gas can in a short time to reach thermal equilibrium with the outside world. Check e = e1 + I-F + IeJ + Ij +1 I 【22) device measurement error curve shown in Figure 3. Figure 3 shows the measured error and error theory have a certain bias, because the field experiment 2 ∞ 0 Ⅲ iv bared hiss. No. 2l No. 2 Cai Liang, etc.: A Measure of hygroscopic material Lattice volume as appropriate thermodynamic method 133 during temperature changes, pressure change and observation error, and so the result of comprehensive sets of factors. When the measured volume of material greater than 171mL, the relative error of less than 5%, greater than 361mL, the relative error is less than 3%, showing that the device can achieve good measurement results refer to the text spine: 1] MuthukumarappanKVolumetricChangesinRiceKeme ~ DuringDesorptionandAdsorption [J ]. TransactionsoftheASAE, 1992,35 (1): 235 [2: Yuan Weiping apply value analysis, etc. [M], Nanjing: Southeast University Press,ugg prezzo, 1992 [3J and other engineering thermodynamics Pang Ming Lu M] Beijing: Higher Education Press Du, 1985AThermodynamicMethodfortheVolumetryofHygroscopicandIncompactMaterialCAILiang, YUWei -ping, SHIMing-hen (DepartmentofPowerEngin ~ ring, SoutheastUniversity, Naming210018) Abstract: Athermodynamicmethodforthevoluraetryofhygroscopicandincompactmaterialisintroducedinthispaper. Experimentaldevicewassetup. Thermodynamicprocessanderroranalyzingarealsodiscussed. Keywords: Hygroscopicmaterial; Incompactmaterial; Volumetry
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