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Re: GSBN:More from Kelly about China
- To: "GSBN" GSBN@...
- Subject: Re: GSBN:More from Kelly about China
- From: Paul Lacinski paul@...
- Date: Fri, 28 Jun 2002 18:28:32 -0400
- Reply-to: "GSBN" GSBN@...
- Sender: "GSBN" GSBN@...
One of the reasons the straw bale houses are succeeding in China is
because they are so very similar to the brick houses. Both are
plastered inside and out. The windows vary from location to location
and house to house, but not according to whether the walls are of
bales or bricks. The heating systems are the same, a coal-burning
steel firebox (leaky) hooked to a kang (raised platform with stove
exhaust snaking through it) or firewall (brick wall with exhaust
snaking through it) or both. I do not recall any intake or exhaust
dampers, but I'm not sure. Ceiling insulation is usually bagged
sawdust in both cases, and roofs and ceilings are the same. Floors
are slabs. We're introducing the idea of coal slag as floor
insulation, but it hasn't caught on yet.
The stoves do draw from the interior (as does the separate cooking
stove), and so the fact that the bale houses use alot less coal
points in the direction of Derek's conclusion as the major reason for
moister interior air. The other factor at work is that the brick
walls are acting as de-facto dehumidifiers in the winter- their
interior surfaces are apparently quite cold- so much so that frost is
common in the corners of the buildings. When people don't have this
problem in the bale houses (thanks as much to the exterior insulation
in the bond beams as to the bales) they are surprised and very happy.
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