Numerical Simulation of Combustion Processes of Solid Fuel in a Furnace with Counter-Current Twisted Streams
Journal Title: Вентиляція, освітлення та теплогазопостачання - Year 2017, Vol 22, Issue
Abstract
The purpose of the work is numerical research of the powdered peat processes in a cylindrical vortex furnace with counter current twisted flows. The results of computer simulation has been presented for burning processes of low-grade solid fuel (powdered peat) with humidity of 40 %, ash content of 6 % and higher specific heat of combustion Qh = 12.3 MJ/kg. The fields of temperature distribution and gases velocity and particles in volume and at the exit from the furnace are obtained. The particle motion trajectories with a diameter of 25 microns and 250 microns in volume of heating are obtained. It has been calculated that the concentration of oxygen is close to zero along the height of heating. At the outlet of the furnace the concentration of oxygen is equal to 5...6%, since oxygen is supplied from excess (αv = 1,2). Mechanical underburning is 0.06 %. It has been shown that the furnace provides the complete burning of 99.8 % for powdered particles of peat and 100% for volatile particles
Authors and Affiliations
I. Redko, A. Redko, E. Kirilash, V. Norchak
Keywords
Related Articles
- EP ID EP556507
- DOI -
- Views 74
- Downloads 0
Decrease in nitrogen oxide emissions from the combustion of the prepared gas mixture in the swirl burner
The results of numerical studies prepared by the combustion of the gas mixture (α'v=0.75) in the vortex burner. The results of computer simulation of three-dimensional low-emission gas burning scheme taking into account...
An Analytical Study of the Efficiency of the Natural General Ventilation of Cattle Building
Operating costs for the work of general ventilation systems is about 30 % in the energy balance of premises for keeping cattle. The possibility of increasing the efficiency of general ventilation of the premises for keep...
Mathematical Modeling the Work of Helioroof
This article describes the modeling the worb of helioroof. Helioroof enhances the efficiency of solar heating by increasing the area of the absorption of solar energy. It is shown that heat can be effectively used by roo...
Mathematical Model and Method for Calculating the Dynamics of Drying Biomass at the Production of Pellets
All types of biomass (straw, stalks of corn, sunflower, wood shavings, energy willow, sorghum, miscantus) are colloidal capillary-porous bodies, drying of which is carried out in a high-temperature drying agent and invol...
Marking Technology of Energy Efficiency for Heating Ventilation and Air Conditioning
For a number of reasons, the guidance documents on energy efficiency of HVAC systems, developed by the European institutions, are focused on heating systems. Development standards for energy efficiency of air-conditionin...