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A study of the efficiency of hydrogen liquefactionThe use of liquid hydrogen as a jet aircraft fuel has a number of environmental and technological advantages over conventional fuels. The liquefaction of hydrogen requires a large expenditure of energy. There are many inefficiencies that are a part of any practical liquefaction process. Current technology was investigated for the best available system. Parametric studies were made to identify where inefficiencies occur and to optimize and integrate the component parts. Flowsheets are presented for a module that produces 250 tons per day of liquid hydrogen. Approximately ten of these modules is needed for a major airport in the 1990's. The advantages of producing a product with a minimum amount of ortho to para hydrogen conversion are pointed out. The optimum degree of conversion was determined for a liquid hydrogen product that will be used within a given time. An assessment was made regarding the potentials for improvement of the processing schemes and equipment over the next 10 to 25 years.
Document ID
19770014667
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Baker, C. R.
(Union Carbide Corp. Tonawanda, NY, United States)
Shaner, R. L.
(Union Carbide Corp. Tonawanda, NY, United States)
Date Acquired
August 8, 2013
Publication Date
March 1, 1976
Publication Information
Publication: Miami Univ. 1st World Hydrogen Energy Conf. Proc., Vol. 2
Subject Category
Energy Production And Conversion
Accession Number
77N21611
Funding Number(s)
CONTRACT_GRANT: NAS1-13395
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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