Development of a vortexing combustor (VC) for space/water heating applications (cold flow modeling)

Technical Report · Sun May 01 04:00:00 EDT 1988

OSTI ID:5901519

Nieh, S

Research continued on the development of a vortexing combustor (VC). Systematic test runs and measurements of the gas flow field in the bench-scale VC model were completed. A number of influencing factors, both configurational and operational, were studied and their effects on the hydrodynamic structure in the VC test chamber were delineated. The hydrodynamic structure in VC chambers is a determinant for the initiation of ignition and for self-sustained combustion of ultrafine coal. The design of a full-scale VC model and associated systems were also made, incorporating the design data obtained from the exploratory and bench-scale VC models as well as operation experience. Fabrication and installation of the full-scale VC test unit are under way. Based on the solved gas flow field in VC processes, efforts on the modeling work have been focused on the particle-phase flows. Formulation of both non-reacting and reacting particle flows was accomplished. Coupled with gas-phase flow program, a computer code for the prediction of particle behavior has been developed. Numerical computation of spatial distributions of particles in VC chambers was made and found to be consistent with our experimental measurements. 9 refs., 12 figs., 2 tabs.

• Research Organization: Catholic Univ. of America, Washington, DC (USA). Dept. of Mechanical Engineering
• Sponsoring Organization: DOE; USDOE, Washington, DC (USA)
• DOE Contract Number: AC22-87PC79661
• OSTI ID: 5901519
• Report Number(s): DOE/PC/79661-T5; ON: DE91013184
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
014000* -- Coal
Lignite
& Peat-- Combustion
BENCH-SCALE EXPERIMENTS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COMBUSTION
COMBUSTORS
DESIGN
DOCUMENT TYPES
ENERGY SOURCES
FLUID FLOW
FLUID MECHANICS
FOSSIL FUELS
FUELS
GAS FLOW
HEATING
HYDRODYNAMICS
MATERIALS
MATHEMATICAL MODELS
MECHANICS
NOZZLES
OXIDATION
PARTICLES
PROGRESS REPORT
SPACE HEATING
THERMOCHEMICAL PROCESSES
VELOCITY
WATER HEATING