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ISEN-ASTC-L is a service of the Association of Science-Technology Centers
Incorporated, a worldwide network of science museums and related institutions.
*****************************************************************************
Adding heat sources may be an asymptotic solution, if the heat is
allowed to dissipate widely. A chimney would channel heat and, I
gather, the right design could generate more updraft, as well as
insulate dangerous heat from users.
Assuming your balloon has a hole on the top, making that hole smaller
(unfortunately not quite as easy as making a hole larger...) might
have an effect, too.
JasonJayStevens
[log in to unmask]
www.potterbelmar.org/spoke
On Jan 3, 2006, at 10:14 AM, jeff courtman wrote:
> ISEN-ASTC-L is a service of the Association of Science-Technology
> Centers
> Incorporated, a worldwide network of science museums and related
> institutions.
> **********************************************************************
> *******
>
> I'm hoping someone can save me a little time....
>
> We've recently had problems with our hot air balloon - the original
> electric
> burners have been replaced over the last couple of years - one by
> one - and
> there is no one here who remembers what size they were or make....
>
> our balloon was very slow (using three 750 degree heaters).
> Replaced with
> three 1000 deg. guns, standard heat guns from grainers, but still
> takes way
> too long to heat.
>
> any solutions? our balloon is approx. 3.5 diameter.
>
> thanks
>
> Jeff Courtman
> Exhibits & Special Projects Coordinator
> 251.208.6851
> Exploreum Science Center
> www.exploreum.net <http://www.exploreum.net/>
>
>
> **********************************************************************
> *
> More information about the Informal Science Education Network and the
> Association of Science-Technology Centers may be found at http://
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More information about the Informal Science Education Network and the
Association of Science-Technology Centers may be found at http://www.astc.org.
To remove your e-mail address from the ISEN-ASTC-L list, send the
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