Stability analysis of MHD disk generators and application to power systems with CO2 recovery

Motoo Ishikawa, Tetsuji Matsuo and Juro Umoto

Energy, 1997, vol. 22, issue 2, 239-247

Abstract: Preliminary design and stability analyses of magnetohydrodynamic (MHD) disk generators have been carried out. These are used in electric power-generation systems with CO2 recovery. Inflow disk channels show better performance than outflow disk channels. An inflow channel with supersonic flow shows an enthalpy extraction ratio of 20.2% when the thermal input is 1100 MW and the magnetic field is 8 T. The calculated enthalpy extraction is 23.5% with 2000 MW and 10 T. A stability analysis has shown that it is possible to stabilize the open-cycle disk channels, although the channels tend to become unstable at the exit region when they are operated with 10 T. Cycle analyses have been carried out for an electric power system in which coal is burnt with 95% oxygen and CO2 is recovered as liquid. A high cycle efficiency of 43% (higher heating value, HHV) can be obtained for a thermal input of about 1000 MW and magnetic field of 8 T while 46% HHV results from the system with about 2000 MW and 10 T, even when the power required for CO2 liquefaction is considered.

Date: 1997
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544296001132
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:22:y:1997:i:2:p:239-247

DOI: 10.1016/S0360-5442(96)00113-2

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().