Takayuki Kishi, Mizuo Kudo, Hiromasa Iisaka (auth.), R. W.'s Advances in Cryogenic Engineering PDF

By Takayuki Kishi, Mizuo Kudo, Hiromasa Iisaka (auth.), R. W. Fast (eds.)

ISBN-10: 1461364868

ISBN-13: 9781461364863

ISBN-10: 1461533686

ISBN-13: 9781461533689

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P 2 I 6. P. R . T 8 _- - 3 W 2 ( A 82 ) I (15) 8 ) - - - Q m1(As1 Hh n1- e) + Q m2(A,2)·(h n2+ e) 3 (16) K c =(K1 +K2 )/ ( 2·n·(r~-r~)(P8 -P0 ) I 3·hct) =K - - 1 ( A 81 ) I (h n1 - e) + K 2 ( A 82 ) I (h n2 + e) (17) where, W1, W2, K1, K2, Om1 and Om2 are dimensionless characteristics of a single bearing and all other symbols used in the above equations are as defined in Appendix 2. 05< As <5 . 6 shows the relationship between the restrictor pressure ratio Po/Ps and As. 7. 2. The solid line in the figure represents the combined chracteristics and the broken line represents the individual characteristics, respectively.

A lower blowdown pressure would have increased the efficiency of the expander with a slight decrease in cooling rate. The first set of tests varied the stroke length and the speed to maintain a 1450 cm 3 / s displacement rate while holding the blowdown and recompression pressure constant (cases 1,3,5). 1 cm) at a constant speed (60 rpm), blowdown and recompression pressure (cases 2,4,5). Table 1 lists the measured data and calculated results for the 5 cases. QLoad was the cooling rate measured by the heater in the recondenser.

3 mm respecti vely, to increase overall load capaci ty and reduce the quantity of gas supplied. 6 EXPERIMENTAL RESULTS AND OBSERVATIONS Figure 10 shows the structure of the turbine expander used in this expertment while Figs. 11 and 12 give the outline of the turbine expander test equipment and the configuration of the turbine shaft system , respectively. 11. 12. 13. Comoarison of thrust force with load carring capacity Thrust Hearing Characteristics The measured results of load capacity and flow rate for the single thrust bearing using the experimental machine demonstrated in Fig.

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Advances in Cryogenic Engineering by Takayuki Kishi, Mizuo Kudo, Hiromasa Iisaka (auth.), R. W. Fast (eds.)

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