Design, fabrication, and performance evaluation of a novel biomass-gasification-based hot water generation system

Sunil,, Rahul Sinha, Bathina Chaitanya, Birendra Kumar Rajan, Anurag Agarwal, Ajay D. Thakur and Rishi Raj

Energy, 2019, vol. 185, issue C, 148-157

Abstract: Design and development of a novel 22kWth hot water generation system comprising a biomass-gasification unit in the core and an integrated fire-tube water heat exchanger in the annulus is reported. Producer gas from the gasifier is combusted in a burner and the resulting hot flue gases are routed back through the helical tube to heat the water contained within the annular shell. This allows recovery of the thermal energy typically lost from the outer surface of a conventional gasification system. The simple design improvisation leads to a doubling of the overall efficiency (≈48%) compared to a standard system with physically separated gasifier and heat exchanger units (≈24%). The developed system holds promise in domestic and industrial water heating applications. Overall, this integrated design presents an efficient and environment-friendly waste-to-value concept and proposes a meaningful use of the underutilized 36 EJ/annum potential of biomass from crop residue globally.

Keywords: Biomass; Gasification; Hot water generator; Heat recovery; Helical coil heat exchanger (search for similar items in EconPapers)
Date: 2019
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:185:y:2019:i:c:p:148-157

DOI: 10.1016/j.energy.2019.06.186

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