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  • ELECTRONICS AND ELECTRICAL ENGINEERING  (2)
  • Chemical Engineering  (1)
  • 1980-1984  (3)
  • 1925-1929
  • 1
    Electronic Resource
    Electronic Resource
    Fractionation with condensation and evaporation in wetted-wall columnsThis paper is not to be reproduced or published in any form without the written permission of the authors. J. F. Davis is now with the Department of Chemical Engineering, The Ohio State University. (1984)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 30 (1984), S. 328-338 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A model is presented to describe the behavior of falling film fractionators with evaporation or condensation. Experimental measurements of vapor composition, vapor temperature and wall temperature profiles were made. Close agreement suggests that the model is applicable to both adiabatic and nonadiabatic conditions.
    Additional Material: 12 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690300223
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    Paper (German National Licenses)
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  • 2
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    The characteristics and limitations of the MPS/MMS battery charging system (1980)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: A series of tests was conducted on two 12 ampere hour nickel cadmium batteries under a simulated cycle regime using the multiple voltage versus temperature levels designed into the modular power system (MPS). These tests included: battery recharge as a function of voltage control level; temperature imbalance between two parallel batteries; a shorted or partially shorted cell in one of the two parallel batteries; impedance imbalance of one of the parallel battery circuits; and disabling and enabling one of the batteries from the bus at various charge and discharge states. The results demonstrate that the eight commandable voltage versus temperature levels designed into the MPS provide a very flexible system that not only can accommodate a wide range of normal power system operation, but also provides a high degree of flexibility in responding to abnormal operating conditions.
    Keywords: ELECTRONICS AND ELECTRICAL ENGINEERING
    Type: NASA-TM-81983
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Electrical resistivity of composite superconductors (1983)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: In addition to its superconducting properties, a superconductor is usually characterized by poor thermal conductivity and relatively high electrical resistivity in the normal state. To remedy this situation a study of superconducting properties of Cu-rich CU-Nb wires prepared by directionally solidified and cold-rolled technique was conducted. Some of the specimens were prepared by melting, directional solidification and diffusing in Tin. A total of 12 wire specimens was tested. Each specimen was analyzed by plotting experimental data into the following curves: the graph of the residual resistivity as a function of the specimen current at 4.3 K; and the graph of the electrical resistivity as a function of the temperature at a constant current.
    Keywords: ELECTRONICS AND ELECTRICAL ENGINEERING
    Type: NASA-CR-170793 , NAS 1.26:170793
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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