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Article #2372Re: A bubble wall?
From: Nick Pine
Date: Tue, 16 Apr 1996 00:00
Date: Tue, 16 Apr 1996 00:00
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george <jeffe@red.seas.upenn.edu> wrote: >...the thermal conductivity of soap film isn't in my heat transfer text. I wonder what heat transfer text you are using. I guess it's like a very thin film of water, or anything else, eg plastic film, as far as stopping convection, and good enough to stop some of the IR radiation, ie the bubble wall would ideally be thick enough or opaque enough slow down IR losses considerably. >I'm guessing its a reasonable conductor - The wall itself, yes, but the air inside the bubble is less conductive. >it your "wall" is thin (like a double paned window) you wouldn't gain >anything filling it with bubbles. Can you define "anything"? :-) >If you had a thicker wall you might gain something >assuming you could get the bubbles to stay put. That's the idea... Nick
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X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 107e5d,21c1cd819898d2eb X-Google-Attributes: gid107e5d,public X-Google-Thread: 1159e3,21c1cd819898d2eb X-Google-Attributes: gid1159e3,public X-Google-Thread: 10eede,21c1cd819898d2eb X-Google-Attributes: gid10eede,public X-Google-Thread: fb752,21c1cd819898d2eb X-Google-Attributes: gidfb752,public X-Google-Thread: 10607c,21c1cd819898d2eb X-Google-Attributes: gid10607c,public X-Google-Thread: 10e415,21c1cd819898d2eb X-Google-Attributes: gid10e415,public X-Google-Thread: 1025ed,21c1cd819898d2eb X-Google-Attributes: gid1025ed,public X-Google-Thread: 105eab,21c1cd819898d2eb X-Google-Attributes: gid105eab,public From: nick@vu-vlsi.ee.vill.edu (Nick Pine) Subject: Re: A bubble wall? Date: 1996/04/16 Message-ID: <4l1ee1$5li@vu-vlsi.ee.vill.edu> X-Deja-AN: 147884866 references: <4j45me$jmk@vu-vlsi.ee.vill.edu> <bhoglund-1304961005320001@max7-147.hiwaay.net> <317405C0.789@netnet.net> <4l16tg$n7s@netnews.upenn.edu> organization: Villanova University newsgroups: sci.energy,alt.energy.renewable,bit.listserv.geodesic,alt.architecture.alternative,pa.environment,sci.environment,alt.home.repair,sci.engr.heat-vent-ac,alt.solar.thermal