skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: A CFD model for biomass combustion in a packed bed furnace

Abstract

Climate change has now become an important issue which is affecting environment and people around the world. Global warming is the main reason of climate change which is increasing day by day due to the growing demand of energy in developed countries. Use of renewable energy is now an established technique to decrease the adverse effect of global warming. Biomass is a widely accessible renewable energy source which reduces CO{sub 2} emissions for producing thermal energy or electricity. But the combustion of biomass is complex due its large variations and physical structures. Packed bed or fixed bed combustion is the most common method for the energy conversion of biomass. Experimental investigation of packed bed biomass combustion is difficult as the data collection inside the bed is challenging. CFD simulation of these combustion systems can be helpful to investigate different operational conditions and to evaluate the local values inside the investigation area. Available CFD codes can model the gas phase combustion but it can’t model the solid phase of biomass conversion. In this work, a complete three-dimensional CFD model is presented for numerical investigation of packed bed biomass combustion. The model describes the solid phase along with the interface between solidmore » and gas phase. It also includes the bed shrinkage due to the continuous movement of the bed during solid fuel combustion. Several variables are employed to represent different parameters of solid mass. Packed bed is considered as a porous bed and User Defined Functions (UDFs) platform is used to introduce solid phase user defined variables in the CFD. Modified standard discrete transfer radiation method (DTRM) is applied to model the radiation heat transfer. Preliminary results of gas phase velocity and pressure drop over packed bed have been shown. The model can be useful for investigation of movement of the packed bed during solid fuel combustion.« less

Authors:
 [1];  [2];  [3];  [1]
  1. Faculty of Science, Engineering and Technology, Swinburne University of Technology, VIC 3122 (Australia)
  2. (Bangladesh)
  3. Department of Mechanical & Chemical Engineering, Islamic University of Technology, Gazipur 1704 (Bangladesh)
Publication Date:
OSTI Identifier:
22608559
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1754; Journal Issue: 1; Conference: ICME 2015: 11. international conference on mechanical engineering, Dhaka (Bangladesh), 18-20 Dec 2015; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS; BIOMASS; CARBON DIOXIDE; CLIMATES; COMBUSTION; DEMAND; ELECTRICITY; EMISSION; ENERGY CONVERSION; GREENHOUSE EFFECT; HEAT TRANSFER; INTERFACES; MASS; PACKED BEDS; PHASE VELOCITY; POROUS MATERIALS; PRESSURE DROP; SIMULATION; SOLID FUELS; SOLIDS; THREE-DIMENSIONAL CALCULATIONS

Citation Formats

Karim, Md. Rezwanul, Department of Mechanical & Chemical Engineering, Islamic University of Technology, Gazipur 1704, Ovi, Ifat Rabbil Qudrat, and Naser, Jamal, E-mail: jnaser@swin.edu.au. A CFD model for biomass combustion in a packed bed furnace. United States: N. p., 2016. Web. doi:10.1063/1.4958417.
Karim, Md. Rezwanul, Department of Mechanical & Chemical Engineering, Islamic University of Technology, Gazipur 1704, Ovi, Ifat Rabbil Qudrat, & Naser, Jamal, E-mail: jnaser@swin.edu.au. A CFD model for biomass combustion in a packed bed furnace. United States. doi:10.1063/1.4958417.
Karim, Md. Rezwanul, Department of Mechanical & Chemical Engineering, Islamic University of Technology, Gazipur 1704, Ovi, Ifat Rabbil Qudrat, and Naser, Jamal, E-mail: jnaser@swin.edu.au. Tue . "A CFD model for biomass combustion in a packed bed furnace". United States. doi:10.1063/1.4958417.
@article{osti_22608559,
title = {A CFD model for biomass combustion in a packed bed furnace},
author = {Karim, Md. Rezwanul and Department of Mechanical & Chemical Engineering, Islamic University of Technology, Gazipur 1704 and Ovi, Ifat Rabbil Qudrat and Naser, Jamal, E-mail: jnaser@swin.edu.au},
abstractNote = {Climate change has now become an important issue which is affecting environment and people around the world. Global warming is the main reason of climate change which is increasing day by day due to the growing demand of energy in developed countries. Use of renewable energy is now an established technique to decrease the adverse effect of global warming. Biomass is a widely accessible renewable energy source which reduces CO{sub 2} emissions for producing thermal energy or electricity. But the combustion of biomass is complex due its large variations and physical structures. Packed bed or fixed bed combustion is the most common method for the energy conversion of biomass. Experimental investigation of packed bed biomass combustion is difficult as the data collection inside the bed is challenging. CFD simulation of these combustion systems can be helpful to investigate different operational conditions and to evaluate the local values inside the investigation area. Available CFD codes can model the gas phase combustion but it can’t model the solid phase of biomass conversion. In this work, a complete three-dimensional CFD model is presented for numerical investigation of packed bed biomass combustion. The model describes the solid phase along with the interface between solid and gas phase. It also includes the bed shrinkage due to the continuous movement of the bed during solid fuel combustion. Several variables are employed to represent different parameters of solid mass. Packed bed is considered as a porous bed and User Defined Functions (UDFs) platform is used to introduce solid phase user defined variables in the CFD. Modified standard discrete transfer radiation method (DTRM) is applied to model the radiation heat transfer. Preliminary results of gas phase velocity and pressure drop over packed bed have been shown. The model can be useful for investigation of movement of the packed bed during solid fuel combustion.},
doi = {10.1063/1.4958417},
journal = {AIP Conference Proceedings},
number = 1,
volume = 1754,
place = {United States},
year = {Tue Jul 12 00:00:00 EDT 2016},
month = {Tue Jul 12 00:00:00 EDT 2016}
}