Numerical Simulation on Operating Characteristics of Closed Loop MHD Experimental Facility

Hidemasa Takana, Yoshihiro Okuno, Hiroyuki Yamasaki

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

Operation characteristics of the closed loop experimental facility for CCMHD power generation which is now under construction at Tokyo Institute of Technology are examined by carrying out time dependent quasi-one-dimensional numerical simulations. It was found that under electrical power generation, the compression ratio increases from 4.9 (under non-power generation) to 5.9 (under power generation) because of the large decrease in total pressure by Lorentz force. Then, the increment of the electrical power input to the high temperature gas heater was found to be small (15 kW) to compensate for the extraction of the output power (41 kW). This is mainly because the argon gas temperature decreases at the generator exit by electrical power generation, as a result, the amount of cooling in the diffuser and cooling duct reduces. The start-up operation of the closed loop experimental facility is proposed. The rated operating condition can be obtained by increasing discharge flow rate of the compressor through several stages of operations, i.e., argon gas charging and adjustment of heater input power. By following this operation procedure, it is possible to operate this facility without violating any restrictions of the facility.

Original languageEnglish
Pages (from-to)785-790
Number of pages6
JournalIEEJ Transactions on Power and Energy
Volume124
Issue number5
DOIs
Publication statusPublished - 2004
Externally publishedYes

Keywords

  • closed loop MHD experimental facility
  • continuous operation
  • non-equilibrium MHD power generation
  • operation procedure

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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