Clean Air: International Journal on Energy for a Clean Environment

ISSN for PRINT: 1561-4417

For Online Access

Best Paper Award Selection - Editorial Board Site

2005, Volume6

Issue 4

113 pages

DOI: 10.1615/InterJEnerCleanEnv.v6.i4

Issue price - $108.00

R. F. Reinaldo
Mechanical Engineering Department, Federal University of Santa Catarina, Campus Univeristário Trindade, Florianópolis-SC, Brazil

E. Bazzo
Mechanical Engineering Department, Federal University of Santa Catarina, Campus Univeristário Trindade, Florianópolis-SC, Brazil

Joao Luis Toste de Azevedo
Mechanical Engineering Department, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisboa, Portugal

Most failures in the tubes of superheaters and reheaters of utility boilers are due to creep strain, as a result of localized high temperatures. This work presents the predicted final superheater metal temperature, taking into account local convective and radiative heat transfer. The calculation procedure is based in the simulation of the combustion, flow, and heat transfer of a utility boiler furnace using a computational-fluid-dynamics-based model for pulverized coal combustion already extensively used. Two different conditions are simulated: without flow controller and with flow controllers in some superheater tubes. The results show that the flow controllers smooth out the temperature profile.

DOI: 10.1615/InterJEnerCleanEnv.v6.i4.40 Download article, 409-421 pages

Article price - $35.00

<< Previous article   Next article >>