Experimental and CFD analysis to study the effect of inlet area ratio in a natural draft biomass cookstove
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The biomass cookstoves have been used in rural areas for the time immemorial. New developments in cookstove design are needed due to cookstoves impact on the user’s health and the environment. This paper presents a novel computational method to understand the working of a cookstove. The effect of inlet area ratio on various performance parameters is studied through experimentation and computational fluid dynamics (CFD). The steady-state model predicts the temperature profile at different locations inside the stove for different inlet area ratios (IARs), which is validated against the experimental data. The combustion phenomenon is simulated using non-premixed combustion and k-ε turbulence models. The critical value of IAR is found to be 0.70, up to which the firepower and flame temperature are increasing. For IAR less than 0.7, the firepower decreases, flame temperature saturates, and the CO emissions continue to rise. Results showed that CFD is a useful tool with adequate accuracy to understand the thermal and emissions behaviour of the cookstove. CFD can be used as an aid to the experimentation for preliminary analysis or as a standalone tool once validated experimentally.
KeywordsCFD Combustion Biomass cookstove k-ε turbulence model Inlet area ratio Non-premixed combustion
List of symbols
Cross-sectional area unoccupied by the fuel at the feed door, m2
Cross-sectional area of elbow, m2
Flue gas temperature in the combustion chamber, K
Average time taken, s
Mass flowrate of fuel, kg/s
Height of the stove, m
Heat release by flue in combustion chamber, kW
Mass flowrate of flue, kg/s
Specific heat capacity of fuel, kJ/kgK
No external funds were provided by any institution.
Compliance with ethical standards
Conflicts of interest
The authors declare that they have no conflicts of interest.
- Agenbroad, J., DeFoort, M., Kirkpatrick, A., & Kreutzer, C. (2011). A simplified model for understanding natural convection driven biomass cooking stoves-Part 1: Setup and baseline validation. Energy for Sustainable Development. International Energy Initiative. https://doi.org/10.1016/j.esd.2011.04.004.CrossRefGoogle Scholar
- Baldwin, S. F. (1987). Biomass stoves: Engineering design development and dissemination. Arlington, VA: Vita Publications.Google Scholar
- Bhowte, Y. W. (2016). Forecasting the load of demand and supply of electricity in India. In 2016 International Conference on Computation of Power, Energy, Information and Communication, ICCPEIC 2016, pp. 675–679. https://doi.org/10.1109/iccpeic.2016.7557308.
- Biswas, G., & Eswaran, V. (2002). Turbulent flows-fundamentals, experiments and modeling (2002nd ed.). United Kingdom: Alpha Science International Ltd.Google Scholar
- Chouhan, K., Ladhe, Y., & Upadhayay, V. (2014). Biomass a versatile fuel for energy and power generation. IOSR Journal of Mechanical and Civil Engineering. http://www.iosrjournals.org/iosr-jmce/papers/ICAET-2014/me/volume-3/2.pdf.
- Fluent. (2011). ANSYS FLUENT user’s guide. Vol. 15317. http://cdlab2.fluid.tuwien.ac.at/LEHRE/TURB/Fluent.Inc/v140/flu_ug.pdf.
- Gupta, R., & Mittal, N. D. (2010). Fluid flow and heat transfer in a single-pan wood stove. International Journal of Engineering Science, 2(9), 4312–4324.Google Scholar
- Ludwinski, D., Moriarty, K., & Wydick, B. (2011). Environmental and health impacts from the introduction of improved wood stoves: Evidence from a field experiment in Guatemala. Environment, Development and Sustainability, 13(4), 657–676. https://doi.org/10.1007/s10668-011-9282-z.CrossRefGoogle Scholar
- Miller-Lionberg, D. (2011). A fine resolution CFD simulation approach for biomass cook stove development. http://gradworks.umi.com/14/92/1492414.html.
- Ministry of New and Renewable Energy, G. of I. (2010). New initiative for development and deployment of improved cookstoves: Recommended action plan, Final Report.Google Scholar
- Misra, J. S. (2009). Considering value of information when using CFD in design. Graduate Theses and Dissertations. 11087 Ames Laboratory (AMES), Ames, IA (United States). https://lib.dr.iastate.edu/etd/11087/?utm_source=lib.dr.iastate.edu%2Fetd%2F11087%26utm_medium=PDF%26utm_campaign=PDFCoverPages. Accessed 12 Oct 2018.
- Singh, S., Gupta, G. P., Kumar, B., & Kulshrestha, U. C. (2014). Comparative study of indoor air pollution using traditional and improved cooking stoves in rural households of Northern India. Energy for Sustainable Development, 19(1), 1–6. https://doi.org/10.1016/j.esd.2014.01.007.CrossRefGoogle Scholar
- Singh, A., Tuladhar, B., Bajracharya, K., & Pillarisetti, A. (2012). Assessment of effectiveness of improved cook stoves in reducing indoor air pollution and improving health in Nepal. Energy for Sustainable Development, 16(4), 406–414. https://doi.org/10.1016/j.esd.2012.09.004.CrossRefGoogle Scholar
- Slipper, B.-, Nottingham, T., & User, N. E., Burnham-Slipper, H. (2009). Breeding a better stove : The use of computational fluid dynamics and genetic algorithms to optimise a wood burning stove for Eritrea. Ph.D. thesis, University of Nottingham.Google Scholar
- Ting, Z., Shivakoti, G. P., Haiyun, C., & Maddox, D. (2012). A survey-based evaluation of community-based co-management of forest resources: A case study of Baishuijiang National Natural Reserve in China. Environment, Development and Sustainability, 14(2), 197–220. https://doi.org/10.1007/s10668-011-9316-6.CrossRefGoogle Scholar
- Weerasinghe, W. M. S. R., & Bandara, R. M. P. S. (2003). Computational modelling of a wood fired semi-enclosed cooking stove. In 2nd International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, WW1. Accessed 12 Oct 2018.Google Scholar
- WHO, Household air pollution and health. (2018). http://www.who.int/en/news-room/fact-sheets/detail/household-air-pollution-and-health.
- World Energy Outlook. (2015). https://www.iea.org/Textbase/npsum/WEO2015SUM.pdf. Accessed 22 April 2018.