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Updated: Sep 13, 2025
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Improving the Combustion Performance of a Hybrid Rocket Engine using a Novel Fuel Grain with a Nested Helical Structure
Published on: January 18, 2021
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Performance on a novel-designed dual-fuel advanced cookstove
Ujjiban Kakati1, Imlisongla Aier1, Virendra Kumar Vijay1
1Clean Energy Laboratory, Centre for Rural Development and Technology, Indian Institute of Technology Delhi, Hauz Khas, New Delhi, 110016, India.
Chemosphere
|August 1, 2025
Summary
This study developed an advanced cookstove that simultaneously cooks and produces biochar from solid fuels. This innovative design improves thermal efficiency and reduces harmful emissions, offering a cleaner cooking solution.
Area of Science:
- Energy Science
- Environmental Engineering
- Materials Science
Background:
- Approximately 30% of the global population relies on solid fuels for cooking, leading to household air pollution and low thermal efficiency.
- Developing countries with low incomes are disproportionately affected by inefficient and polluting cooking methods.
Purpose of the Study:
- To develop and test an advanced cookstove designed for simultaneous cooking and biochar generation.
- To improve thermal efficiency and reduce emissions associated with solid-fuel cooking.
Main Methods:
- Laboratory testing of an advanced cookstove prototype.
- Conducting Water Boiling Test (WBT) and ISO 19867-1:2018 tests to assess thermal efficiency.
- Utilizing volatile gases from pyrolysis for heat recovery and analyzing emissions (PM2.5, CO).
Main Results:
- Thermal efficiencies ranged from 22-30% (WBT) and 30-40% (ISO test) using biomass and biochar.
- Simultaneous biochar production was achieved, with temperatures sufficient for biomass conversion.
- PM2.5 and CO emissions met Tier 4 and Tier 5 standards, respectively.
Conclusions:
- The advanced cookstove design effectively improves thermal efficiency by utilizing pyrolysis gases for heat recovery.
- The simultaneous generation and use of biochar offer a sustainable fuel source.
- The cookstove significantly reduces harmful emissions, addressing household air pollution concerns.
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