[Stoves] Combustion characteristics of biomass fuels in a fixed bed micro-gasifier cook stove

Mon Feb 20 11:50:42 CST 2017

>From the Abstract:

"Testing procedure is followed as per the world standard testing protocol WBT 4.2.3 to evaluate the performance of these stoves and analysed in terms of efficiency and specific fuel consumption."

‎There is no world standard testing protocol. The WBT 4.2.3 is seriously deficient when it comes to the efficiency and fuel consumption (the latter being calculated from the former).

My advice to the authors is to use test methods that have passed review by experts, any method, rather than one which has been so severely criticised in multiple published works for these very metrics.

This discussion list has been most valuable for bringing these matters to light.

Regards
Crispin

It would be useful for someone in Chennai to connect with Duraisamy  Sakthivadivel to see how this group  at Guindy Campus, Anna University might help move fan stove development and use forward. As background, in 2013 professor P Raman and his group  published an “Evaluation of Domestic Cookstove Technologies Implemented across the World to Identify Possible Options for Clean and Efficient Cooking Solutions”. http://bit.ly/2l0uDF1

In addition to the paper I previously mentioned they recently (Feb 14, 2017) published:

“Development of Advanced Cook Stove with Optimum Air Mixture using CFD”

Sakthivadivel D.*<http://www.indianjournals.com/ijor.aspx?target=ijor:ajrssh&volume=7&issue=2&article=032#aff001>, Balakumar A., Iniyan S.

Online published on 14 February, 2017.

Abstract

The drastic hype in fuel consumption and oil price hike in world market, people around the world intended to move towards the alternative source of energy like biomass for cooking. Many cook stove programmes were implemented in the world aiming to reduce the fuel consumption as well as pollutants through improved biomass cook stoves. Many improved cook stoves have the maximum efficiency with higher level of fuel consumption due to its higher burning rate. In this paper an attempt has been made to improve the thermal efficiency by reducing heat losses mean time in reduced specific fuel consumption. The pollutants emitted by the improved stove is extremely reduced by proper supply of air for combustion. Since advanced cook stove is made to operate at different geographical region, should be harmonious to the use of different fuels. The newly developed ACS IES-15 stove is tested with coconut shell and the result is compared with existing (TERI SPT-0610) stove commercially available in the market at higher thermal efficiency (37%). Testing procedure is followed as per the world standard testing protocol WBT 4.2.3 to evaluate the performance of these stoves and analysed in terms of efficiency and specific fuel consumption.

Asian Journal of Research in Social Sciences and Humanities
Year : 2017, Volume : 7, Issue : 2
First page : ( 384) Last page : ( 392)
Online ISSN : 2249-7315.
Article DOI : 10.5958/2249-7315.2017.00097.1<http://dx.doi.org/10.5958/2249-7315.2017.00097.1>

They are also developing  PV microgrids for household energy.

Tom

From: Stoves [mailto:stoves-bounces at lists.bioenergylists.org] On Behalf Of Paul Anderson
Sent: Monday, February 20, 2017 6:51 AM
To: Discussion of biomass cooking stoves <stoves at lists.bioenergylists.org>
Subject: SPAM: Re: [Stoves] Combustion characteristics of biomass fuels in a fixed bed micro-gasifier cook stove

Stovers,

With thanks to Tom  Miles.  He sent
This was a prior (2015) paper by the same author as the recent citation from Anna University in Chennai.
https://www.researchgate.net/publication/283092306_Experimental_evaluation_of_a_forced_draft_micro_gasifier_cook_stove_using_juliflora_wood_and_coconut_shell

Key from that publication is the list of 3 stoves tested:   Oorja, TERI SPT-0610, and Eco Chulha (by Abellon).  You can search the internet for each and see photos and info.

What they all have in common is FA (forced air or fan assisted).   In basic TLUD configuration (or some fan-jet approach?).   Especially the Oorja encourages the "char-mode" after any migratory pyrolytic front (MFP) has finished.

The "char mode" is KNOWN to burn out the guts of these stoves, but these stoves are still in use and are reserched with respectable budgets and probably awarding  of academic degrees.

I suspect that few such researchers read the Stoves Listserv.   Sort of like reinventing a wheel that is not round.

No further comments at this time.

Paul

Doc  /  Dr TLUD  /  Prof. Paul S. Anderson, PhD

Email:  psanders at ilstu.edu<mailto:psanders at ilstu.edu>

Skype:   paultlud    Phone: +1-309-452-7072

Website:  www.drtlud.com<http://www.drtlud.com>
On 2/19/2017 7:36 AM, Paul Anderson wrote:
Tom and Stovers,

Thanks for that reference and abstract.

I am not going to pay about US$40 to read it, but when someone does, please send comments to the Stoves Listserv.   I am particularly interested in the
The two mode operations of combustion processes namely flaming and char mode of the fuels were also studied.
"Char mode".   Interesting.   Burning char in a TLUD is not good practice for cooking, but maybe the laboratory scientists want to learn about something that is sub-optimal for cooking and shortens the life of the stove.  This is all too common in the "peer reviewed" publications:  Out of touch with the real-world applications of micro-gasifiers.

But maybe it is not a TLUD????   "fixed bed micro-gasifier stove" might be something else?    Or do the researchers choose to ignore body of literature with TLUD mentioned??    The list of references (seen at the provided link) certainly avoid any document with TLUD in its name, but did include the first edition (2011) of Christa Roth's major book.

Paul

Doc  /  Dr TLUD  /  Prof. Paul S. Anderson, PhD

Email:  psanders at ilstu.edu<mailto:psanders at ilstu.edu>

Skype:   paultlud    Phone: +1-309-452-7072

Website:  www.drtlud.com<http://www.drtlud.com>
On 2/18/2017 10:53 PM, Tom Miles wrote:

This is just the abstract but how do these results compare with tests of similar stoves? How would other, or additional, tests that have been mentioned in the last few months change the results or use of the data?

Combustion characteristics of biomass fuels in a fixed bed micro-gasifier cook stove

Sakthivadivel, D. & Iniyan, S. J Mech Sci Technol (2017) 31: 995. doi:10.1007/s12206-017-0152-y

https://link.springer.com/article/10.1007/s12206-017-0152-y

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