Refrigeration – Processes – Evaporation induced by sorption
Patent
1992-09-30
1996-03-12
Ford, John K.
Refrigeration
Processes
Evaporation induced by sorption
62480, 16510412, F25B 1708
Patent
active
054976308
ABSTRACT:
The disclosure is directed to an apparatus and method to increase the coefficient of performance (COP) of hydride heat pump systems to compete with the performance of conventional vapor compression and absorption refrigeration systems. The disclosure is particularly directed to hydrides with van't Hoff curves that cross, whereby the regeneration of the refrigerant hydride occurs at a temperature above the crossing, thereby allowing for a major fraction of the energy required for the regeneration to be supplied by the heat of absorption of the refrigerant. Additionally, the COP can be increased by selection of hydrides, and the kinetics of the system can be improved by the use of heat pipes and phase change materials.
REFERENCES:
patent: 4040410 (1977-08-01), Libowitz
patent: 4055962 (1977-11-01), Terry
patent: 4413670 (1983-11-01), Ritter
patent: 4784217 (1988-11-01), Payre et al.
G. Anevi, et al., "Dynamics of Hydride Heat Pumps," Journal of the Less-Common Metals, vol. 104, pp. 341-348 (1984).
O. Bernauer, et al., "Properties of Metal Hydrides for Use in Industrial Applications," Journal of the Less-Common Metals, vol. 131, pp. 213-224 (1987).
H. Bjurstrom, et al., "The Dynamics of Hydrogen Transfer in a Metal Hydride Heat Pump," Journal of the Less-Common Metals, vol. 131, pp. 225-234 (1987).
J. L. Briesacher, et al., "Low Temperature Non-Evaporable Getters for Gas Purification," HWT Laboratory Hydride Storage Units, Ergenics, Inc. commercial catalog, pp. 1-13 (post 1987).
P. Dantzer, "Static, Dynamic and Cycling Studies on Hydrogen in the Intermetallics LaNi.sub.5 and LaNi.sub.4.77 Al.sub.0.22," Journal of the Less-Common Metals, vol. 131, pp. 349-363 (1987).
D. M. Gruen, et al., "Stability Considerations of AB.sub.5 Hydrides in Chemical Heat Pump Applications with Reference to the New LaNi.sub.5 -.sub.x Al.sub.x Ternary System," Transition Metal Hydrides, Advances in Chemistry Series 167, American Chemical Society, Washington, D.C. (1978).
P. V. Hale, et al., "Phase Change Materials Handbook," NASA Report: NASA-CR-613-63, p. 1 (1971).
E. L. Huston, et al., "Engineering Properties of Metal Hydrides," Journal of the Less-Common Metals, vol. 74, pp. 435-443 (1980).
J. A. Jones, "Regenerative Hydride Heat Pump," NASA Tech Briefs, vol. 16, No. 2, NPO-18104, pp. 90-91 (Feb. 1992).
G. G. Libowitz, et al., "Use of Vanadium-Based Solid Solution Alloys in Metal Hydride Heat Pumps," Journal of the Less-Common Metals, vol. 131, pp. 275-282 (1987).
M. Nagal, et al., "Operating Characteristics of a Metal Hydride Heat Pump for Generating Cooled Air," Journal of the Less-Common Metals, vol. 104, pp. 307-318 (1984).
T. Nishizaki, et al., "Coefficients of Performance of Hydride Heat Pumps," Journal of the Less-Common Metals, Journal of the Less-Common Metals, vol. 89, pp. 559-566 (1983).
E. Orgaz, et al., "Thermodynamics of the Hydride Chemical Heat Pump: III Considerations for Multistage Operation," Journal of the Less-Common Metals, vol. 131, pp. 385-398 (1987).
M. Ron, "A Hydrogen Heat Pump as a Bus Air Conditioner," Journal of the Less-Common Metals, vol. 104, pp. 259-278 (1984).
I. Sheft, et al., "Current Status and Performance of the Argonne Hycosos Chemical Heat Pump System," Journal of the Less-Common Metals, vol. 74, pp. 401-409 (1980).
S. Suda, "Experimental Evaluation of Heat Pump Performance in Connection with Metal Hydride Properties," Journal of the Less-Common Metals, vol. 104, pp. 211-222 (1984).
W. Supper, et al., "Reaction Kinetics in Metal Hydride Reaction Beds with Improved Heat and Mass Transfer," Journal of the Less-Common Metals, vol. 104, pp. 279-286 (1984).
H. H. van Mal, "A LaNi.sub.5 -Hydride Thermal Absorption Compressor for a Hydrogen Refrigerator," Chemie-Ing. -Techn. 45. Jahrg. 1973/Nr.2 (No date).
E. Veleckis, et al., "The Lithium-Lithium Hydride System," The Journal of Physical Chemistry, vol. 78, No. 19, pp. 1933-1940 (1974).
"HWT Laboratory Hydride Storage Units," Series HWT-KL 114, brochure distributed by SAES GETTERS/U.S.A., Inc. (No date).
Redding Edward M.
Stein Charles
Armijo Dennis F.
Ford John K.
Myers Jeffrey D.
Peacock Deborah A.
Thermal Electric Devices, Inc.
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