Slush Hydrogen Pumping Characteristics


Book Description

The pumping characteristics of liquid-solid mixtures of parahydrogen (slush hydrogen) were investigated using a centrifugal type liquid hydrogen pump with a specific speed range of 1600 to 3100.Performance tests at 8,000, 11,000, 14,000, and 19,000 rpm and cavitation tests at 11,000 and 14,000 rpm were made.As predicted by theory, the developed head for liquid and slush hydrogen are the same when the difference in density is considered.The pump efficiency, cavitation constant and NPSH requirements for slush hydrogen are also the same as for the triple-point liquid.After 34 minutes running time with slush hydrogen out of a total running time of 79 minutes, the pump componentsshowed no wear over that expected from operation in liquid.(Author).










Slush Hydrogen Pumping Characteristics (Classic Reprint)


Book Description

Excerpt from Slush Hydrogen Pumping Characteristics Figure 1. Pump Assembled Figure 2. Disassembled Pump Figure 3. Pump Shaft Assembly Figure 4. Pump Installation in Generator Figure 5. Pump Flow Schematic Figure 6. Pump Performance Map, Developed Pressure Figure 7. Pump Performance Map, Developed Head. Figure 8. Pump Efficiency, 11, 000 rpm Figure 9. Pump Cavitation Constant for a 15 Percent Reduction. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.




Slush Hydrogen Fluid Characterization and Instrumentation


Book Description

Areas of the slush hydrogen fluid characterization program covered are production, transfer, and storage of liquid-solid mixtures.An experiment has been performed in which a second component was added to liquid hydrogen to determine the effect on the size.




Research of Production Techniques for Obtaining Over 50% Solid in Slush Hydrogen


Book Description

Liquid-solid mixtures of hydrogen (slush hydrogen) were produced by vacuum pumping, gaseous He injection with vacuum pumping, and by cooling with liquid He in a low heat leak apparatus that permitted visual observation of the experiments through a periscopic device. The slush H produced by these methods was compressed to a maximum pressure of 1.25 psi and the resulting solid content (slush quality) was determined by calculation methods. For the compressed slush H produced by vacuum pumping, the quality was generally in the 65 to 85% range, while the compressed quality produced by the He injection with the vacuum pumping method ranged from 55 to 85% depending upon solid formation procedure. The compressed quality for slush H produced by cooling with liquid He generally ranged from 65 to 95% depending on the method of freezing and the time elapsed during the compression. A number of characteristics were noted which varied with the production techniques employed. (Author).




Slush Hydrogen Fluid Characterization and Instrumentation


Book Description

Areas of the slush hydrogen fluid characterization program covered are production, transfer, and storage of liquid-solid mixtures.An experiment has been performed in which a second component was added to liquid hydrogen to determine the effect on the size.




NBS Technical Note


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Dimensions


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