Read e-book online Advances in Cryogenic Engineering: Proceedings of the 1961 PDF

By E. F. Westrum Jr. (auth.), K. D. Timmerhaus (eds.)

ISBN-10: 147570531X

ISBN-13: 9781475705317

ISBN-10: 1475705336

ISBN-13: 9781475705331

The 1961 Cryogenic Engineering convention Committee is happy to provide the papers of the 1961 Cryogenic Engineering convention. we're thankful to have had the collage of Michigan at Ann Arbor, Michigan as our host for the 7th annual assembly of this workforce. The convention Committee in proposing the papers oftbis convention takes this chance to recognize the help of a piece of writing Committee within the choice of papers for this system. considering the fact that over 100 and twenty papers have been submitted, their job of screening and comparing the papers used to be a dif­ ficult one. The Committee guided by way of G. j. V an Wylen, who additionally served as chair­ guy of the convention Committee, integrated R. W. Arnett, B. W. Birmingham, D. B. Chelton, R. j. Corruccini, C. j. Guntner, M. j. Hiza, R. B. jacobs, A. J. Kidnay, R. H. Kropschot, j. Macinko, D. B. Mann, R. P. Mikesell, R. L. Powell, J. R. Purcell, R. P. Reed, R. j. Richards, A. F. Schmidt, R. B. Stewart, and okay. A. Warren.

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Additional resources for Advances in Cryogenic Engineering: Proceedings of the 1961 Cryogenic Engineering Conference University of Michigan Ann Arbor, Michigan August 15–17, 1961

Sample text

S. Tucker, C. H. : Of what materials were the bearings constructed? Answer by Author: The bearing sleeve was machined from free-cutting phosphor bronze, SAE791. Question by I. Abelow, Fort Detrick, Maryland: What was the material of construction of the rotor? What was the maximum peripheral speed? What was the maximum rotor diameter? Answer by Author: Alumirrum 6061-T6 was used for the rotor. The maximum peripheral speedwas 200 mjsec. The maximum rotor diameter is 7/8 in. K. : Why was this impulse turbine designed for axial flow instead of radial flow?

This sarisfies the condition for static stability if a is near 45°, which turns out to be the case for the optimum design. With the aid of the design charts, an injector hole diameter and bearing stiffness can be found to give the required force FR using (15). The gas flow to the bearing is then found by (11). lf it is a reasonable value compatible with the other process parameters, then one can proceed to find the angle ß. If not, then previous assumptions must be modified to obtain a reasonable gas flow.

Fig. 4. Turbine wbeels and cutting tool. Invited Papers - A-4 33 Gas-Lubricated Bearing Design In the Operation of a gas-lubricated bearing, the surface of the shaft must never tauch the surface of the bearing, since at the high surface speeds usually used, such contact may result in seizure and destruction of the bearing. Under normal Operating conditions the shaft is supported by forces due to pressure in the gas film between the shaft and the bearing, and these forces must be such that the shaft is maintained in a position of stable equilibrium.

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Advances in Cryogenic Engineering: Proceedings of the 1961 Cryogenic Engineering Conference University of Michigan Ann Arbor, Michigan August 15–17, 1961 by E. F. Westrum Jr. (auth.), K. D. Timmerhaus (eds.)


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