Share

Second law analysis of active magnetic regenerative hydrogen liquefiers.

Author(s) : ZHANG L., SHERIF S. A., VEZIROGLU T. N., SHEFFIELD J. W.

Type of article: Article

Summary

The paper presents an exergy analysis of a three-stage active magnetic regenerative hydrogen liquefier which cools a hydrogen gas stream at 77 K and 1 atm to hydrogen liquid at 20 K. Ortho-para conversion of hydrogen is accomplished in a heat exchanger employing a 10 atm helium fluid that cycles in the refrigerator. The performance of the system is described in terms of the cooling capacity and exergy losses as functions of the magnetic material type, magnetic bed size and temperature, helium mass flow rate, ratio of isofield and adiabatic process times, and the operating frequency.

Details

  • Original title: Second law analysis of active magnetic regenerative hydrogen liquefiers.
  • Record ID : 1994-1385
  • Languages: English
  • Source: Cryogenics - vol. 33 - n. 7
  • Publication date: 1993

Links


See other articles in this issue (11)
See the source

Indexing