Using exergy analysis on circulating fluidized bed combustors

Journal Article · Wed Jan 01 00:00:00 EST 1992 · International Journal of Energy-Environment-Economics; (United States)

OSTI ID:7206467

Grimaldi, C N ^[1]; Bidini, G ^[2]

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1. Univ. di Perugia (Italy). Ist. di Energetica
2. Univ. di Firenze (Italy). Dipt. di Energetica

A second-law analysis using direct and indirect approaches has recently been applied to fluidized bed combustors (FBCs). The indirect balance has allowed study of the loss mechanisms related to chemical reactions, heat transfer, and the release of sensible heat to the environment. This work presents an improvement over the previous effort by considering two additional effects, sulfur retention efficiency and non adiabaticity of the recirculation loop, the latter to account for the radiative heat loss from the recirculating solids. The effects of the recirculation ratio on exergy losses and on the system mass flow rates are examined in an atmospheric fluidized bed combustor.

• OSTI ID: 7206467
• Journal Information: International Journal of Energy-Environment-Economics; (United States), Vol. 2:3
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
42 ENGINEERING
FLUIDIZED-BED COMBUSTORS
ENERGY ANALYSIS
ENERGY EFFICIENCY
ATMOSPHERIC PRESSURE
EXERGY
HEAT LOSSES
HEAT TRANSFER
COMBUSTORS
EFFICIENCY
ENERGY
ENERGY LOSSES
ENERGY TRANSFER
LOSSES
014000* - Coal
Lignite
& Peat- Combustion
421000 - Engineering- Combustion Systems