Experimental investigations of long stick wood gasification in a bottom lit updraft fixed bed gasifier

Saravanakumar, A.; Haridasan, T.M.; Reed, T. B.; Bai, R. Kasturi

doi:10.1016/j.fuproc.2007.02.003

Cited by 21 publications

(10 citation statements)

References 6 publications

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“…The overall electrical efficiency we are aiming to with this project is, reasonably, below 10%, which is quite low on an absolute basis, but could be evaluated differently considering that the fuel is costless (economically and environmentally) and that production costs and technologies are quite low, facilitating a quick spreading. In any case the thermal efficiency of the gasifier will be quite high [10] with respect to the very low present-day thermal efficiencies that are associated with traditional cook-stoves.…”

Section: System Layoutmentioning

confidence: 99%

A biomass powered Ringbom-Stirling engine for developing countries: a low-budget solution for distributed electricity generation

Parmigiani¹,

Zani²,

Invernizzi³

et al. 2010

REPQJ

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In many isolated settings electricity is not available or is supplied by fossil fuels, while biomass is used for cooking purposes, not exploiting all of its potential. We are building a prototype of a biomass powered 1kWel Ringbom-Stirling engine that doesn't require high technology, but nevertheless brings relevant innovations. This solution aims to generate electricity using the same source used for cooking. It is meant to be used and to be producible in developing countries, where distributed electricity generation, using locally available primary sources, can help reducing the dependence from foreign aids or suppliers. The system we are building is composed of a down-draft gasifier which supplies the syngas that is then burned to heat the Ringbom-Stirling engine, which produces electricity, while the remaining heat is available for cooking. We discuss here the general scheme of this solution with particular regard for some new applications that greatly simplify the operation of traditional Stirling engines, such as metal bellows, used instead of the typical cylinder-piston arrangement, to totally eliminate the friction due to sealing needs between moving parts.

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Section: System Layoutmentioning

confidence: 99%

A biomass powered Ringbom-Stirling engine for developing countries: a low-budget solution for distributed electricity generation

Parmigiani¹,

Zani²,

Invernizzi³

et al. 2010

REPQJ

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“…Tab 4 . So, the upper errors of the kinetic model in this work are smaller than the average error reported in the literature.…”

Section: Model Validationmentioning

confidence: 99%

“…Several types of gasifiers are currently available, including entrained-flow gasifiers [1][2][3], updraft gasifiers [4][5][6], downdraft gasifiers [7][8][9][10][11][12], cross-flow gasifiers [13], fluidized-bed gasifiers [14][15][16], and spouted-bed gasifiers [17]. The entrained-flow gasifiers produce a low amount of tar in the final product, but a high percentage of energy is lost as sensible heat.…”

Section: Introductionmentioning

confidence: 99%

Validation and Application of a Kinetic Model for Downdraft Biomass Gasification Simulation

et al. 2019

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Biomass gasification is widely recognized as an effective method to obtain renewable energy. To accurately predict the syngas and tar compositions is a challenge. A chemical reaction kinetics model based on comprehensive gasification kinetics is proposed to simulate downdraft biomass gasification. The kinetic model is validated by direct comparison to experimental results of two downdraft gasifiers available in the literature and is found to be more accurate than the widely used Gibbs energy‐minimizing model (GEM model). The kinetic model is then applied to investigate the effects of equivalence ratio (ER), gasification temperature, biomass moisture content, and biomass composition on syngas and tar production. Accurate water‐gas shift and CO shift reaction kinetics are found critical to achieve good agreement with experimental results.

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“…Copyright © 2019 Universitas Brawijaya Saravanakumar, Haridasan, Reed, & Bai (2007) used long sticks in the gasification process in an updraft gasifier with a volume of 0.714 m 3 and 1.34 m in height, with the temperature of 750 °C. Biagini, Cioni, & Tognotti (2005) also found that this process produced the highest volume of cold gases.…”

Section: Fig 6 Comparison Of the Temperature During Gasification Rementioning

confidence: 99%

Creating high levels of gas production from Waste Mushroom Substrate Pellets

Saengsuwan

Kritpolwiwattana

2019

Agrivita.J.Agr.Sci

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This study was to investigate the use of waste mushroom substrate (WMS) material, and waste mushroom substrate pellets (WMSP), with two catalysts (K 2 CO 3 and CaO), as biofuel feed to produce CH 4 in an updraft gasifier. The WMS was made from composted rubber wood chips which had been used for mushroom bed log culture, and pelletizing the WMS (WMSP) to create a biomass with a greater bulk density than the normal WMS. The gasification was determined in the high temperature range of 400-800 0 C by dry fuel feeding at the rate of 25 kg/ha. The results showed that the optimum operation was achieved with WMSP with K 2 CO 3 as the catalyst, at ER = 0.11. The combination of WMSP and K 2 CO 3 produced more CH 4 at 62.2 and 15.27% than single WMS and WMSP, respectively. WMSP with CaO as the catalyst produced 29.65 % less CH 4 than WMSP. Based on gasification equation, CO produced from WMSP was calculated 24.116 % wt, 31.52% wt from WMSP with K 2 CO 3 and 19.21% wt from WMS. The amount of gas produced from the available waste material as the biomass was sufficient to meet all heating requirements of the mushroom production.

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Experimental investigations of long stick wood gasification in a bottom lit updraft fixed bed gasifier

Cited by 21 publications

References 6 publications

A biomass powered Ringbom-Stirling engine for developing countries: a low-budget solution for distributed electricity generation

A biomass powered Ringbom-Stirling engine for developing countries: a low-budget solution for distributed electricity generation

Validation and Application of a Kinetic Model for Downdraft Biomass Gasification Simulation

Creating high levels of gas production from Waste Mushroom Substrate Pellets

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