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Experimental and CFD analysis to study the effect of inlet area ratio in a natural draft biomass cookstove

  • Rohan R. Pande
  • Milind P. Kshirsagar
  • Vilas R. Kalamkar
Article
  • 27 Downloads

Abstract

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.

Keywords

CFD Combustion Biomass cookstove k-ε turbulence model Inlet area ratio Non-premixed combustion 

List of symbols

Ai

Cross-sectional area unoccupied by the fuel at the feed door, m2

A

Cross-sectional area of elbow, m2

Tfg1

Flue gas temperature in the combustion chamber, K

tavg

Average time taken, s

\(\dot{m}_{\text{fuel}}\)

Mass flowrate of fuel, kg/s

h

Height of the stove, m

Qin

Heat release by flue in combustion chamber, kW

\(\dot{m}_{\text{flue}}\)

Mass flowrate of flue, kg/s

Cp

Specific heat capacity of fuel, kJ/kgK

PM

Particulate matter

CO

Carbon monoxide

Notes

Acknowledgements

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.

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Copyright information

© Springer Nature B.V. 2018

Authors and Affiliations

  • Rohan R. Pande
    • 1
  • Milind P. Kshirsagar
    • 2
  • Vilas R. Kalamkar
    • 1
  1. 1.Department of Mechanical EngineeringVisvesvaraya National Institute of TechnologyNagpurIndia
  2. 2.St.Vincent Pallotti Engineering CollegeNagpurIndia

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