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rocket mass heater on school bus?  RSS feed

 
lauren christians
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my mom and i are currently working on a plan for the buckminster fuller prize: a school bus conversion into a sustainable living education center.

we'd like to include a functional rock mass heater. how does cob hold up to vibration? what kind of material alternatives are out there?
 
Emily Brown
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I can't give you a reply from experience but I've been dreaming of building a tiny home on wheels with cob (maybe far-fetched but we all must dream). Here are a few of the resources I've bookmarked that may help you. In my opinion, the worst case scenario with the cob in a mass heater in a bus would be a few cracks.

Earthquake tests:
http://www.youtube.com/watch?v=x8Uz-2PonEk
http://www.youtube.com/watch?v=VJk_AFY4sgE

Mobile cob hut - does have a few cracks
http://www.youtube.com/watch?v=x-1b42S-rbM
 
Rose Pinder
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Location: Otago, New Zealand
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Vibration is an issue, but so is chassis flex (not sure how much that happens in buses, it does happen in trucks). How were you thinking of attaching the RMH?

I'm not sure earthquakes are a good comparison. It's the continual vibration over time that is the issue - imagine driving for 5 hours, and then how many times that happens in a year. You could test this - make up something from cob, secure it to the floor, and take it for a drive.

Weight might be an issue too, depending on what materials and design you use.
 
Emily Brown
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You could also try to recreate the portable rocket mass heater:

http://www.youtube.com/watch?v=GkHOwmKyL7A

You might have to disassemble it for long drives or you might not have to.
 
lauren christians
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Emily Brown wrote:You could also try to recreate the portable rocket mass heater:

http://www.youtube.com/watch?v=GkHOwmKyL7A



that is a great video! i hadn't seen it yet.
we might be able to bolt something like that in. saved!
 
Rose Pinder
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Would love to know how heavy it is.

Paul, how did you transport it afterwards?
 
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