[Stoves] Rice husk stove and rice husk gasifier

[Ken Boak]

Chris & List

modern experience of rice husk gasification  - a paper from 2014

https://halshs.archives-ouvertes.fr/hal-01107615/document

plus a  link to an old paper with some information on rice husk gasification

https://books.google.co.uk/books?id=JKty_OlU8bEC&pg=PA12&dq=gemcor+rice+husk+gasifiers&hl=en&sa=X&ved=0ahUKEwjYr8bAsdrPAhVBKsAKHbnhBbIQ6AEIHjAA#v=onepage&q=gemcor%20rice%20husk%20gasifiers&f=false

On 14 October 2016 at 13:05, Christopher Bradnum <
Christopher.Bradnum at nottingham.ac.uk> wrote:

> Dear List Member
>
> I am looking for some help on a project one of my students is starting.
>
> I have a Taiwanese student who would like to develop a passive (not
> electric fan) rice husk stove for her home as her major project for the
> BEng in Mechanical Engineering at the University of Nottingham. Depending
> on the success of the project, her family may consider starting a business
> manufacturing such stoves within their community. Her family own a rice
> farm and they have a lot of material that they can convert into energy.
> They already have a stove (sorry I don't have the photographs of this)
> which they use for some of their cooking needs. It has a deep central 'pot
> like' component (+/- 750mm tall X 300mm diameter) with a grid at its base
> which holds the burning rice husk. This 'pot' is located inside a larger
> vessel. At the base a fan directs air in below the central rice burning
> 'pot'. A separate pot holder unit is placed on top of the whole
> configuration. This has, what looks like, an inverted colander at its
> centre through which the flame reaches the cooking pot. The stove complete
> is around 1,000mm tall. The rice husk is top lit inside the central pot and
> I assume the air pushed in from underneath helps to fuel the fire. The
> stove produces a reddish / purple flame and I am told a pot filled with
> fuel lasts for 5 hours. Although I can't quite work out what needs to be
> cooked for that long.
> The student returns home in December and will complete some rudimentary
> tests to get a baseline for the efficiency and emissions given off by the
> stove. I will also get her to complete the heterogeneous cooking test
> developed by SeTAR under Prof Harold Annegarn and Crispin
> Pemberton-Piggots' supervision at the University of Johannesburg.
> Leading up to that testing I want her to get on with a bit of research, so
> I thought to turn to this very excellent group and ask for some help
> (standing on the shoulders of giants...).
> Has anyone on the list worked with rice husk as a fuel source and does
> anyone have any research work we can look at as a starting point?
> Particularly using rice husks as a fuel for cooking.
>
> It seems to me, through superficial online perusing, that a rice husk
> gasifier might be a better utilisation of the raw material. If it is a good
> system to convert rice husk into energy I would like to make and test one
> of these too. Does anyone have research around rice husk gasifiers that I
> could start investigating? Is this a good or not so good use of the fuel?
>
> Kind regards
>
> Chris
>
>
>
>
>
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