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From: bernardcleyet@redshift.com> Date: Sat, 15 Mar 2008 14:29:12 -0700> To: phys-l@carnot.physics.buffalo.edu> Subject: Re: [Phys-l] A golf dome (thermal) physics problem> > My thought was more on insulation. Another sl. smaller or larger > dome inside or outside. Between could be filled w/ very low mass > insulation. Then it might support snow (corrugated) as a final > insulation.> > I also suspect they don't fan it. So at the top a bird caught in the > dome will think it's summer while those below will be dressed for > Everest.> > Copying JD; transparent daytime, opaque at night. In the desert SW, > some houses have sliding roof panels filled w/ water, and slid as > appropriate to the weather and season.> > bc puts on a sweater instead of turning up the thermostat and > wonders, what is the dome's overpressure.> > p.s. Not a unique problem:> > http://www.springerlink.com/content/7861x07695429514/> > Note; the heating w/ reflectors.> > Sales to military and medical:> > http://www.jpwinc.com/index.php?page=photo&photo_category=Inflatable > +tent> > Inflateable support> > http://www.jpwinc.com/inside16em.jpg> > > On 2008, Mar 15, , at 13:30, John Denker wrote:> > > On 03/15/2008 11:04 AM, Steve Highland wrote:> >> Last night on our local news it was announced that our golf dome > >> is coming> >> down soon because it just cost too much to heat the thing. The > >> dome is one> >> of those large inflated tent-like gizmos that is sorely needed > >> needed if you> >> want to do any sort of golf practice in the winter in Duluth. > >> (I¹m no> >> golfer ‹ I¹m a bowler and this thing is next door the the bowling > >> alley, so> >> I couldn¹t help but notice it...)> >>> >> This sounds like a great opportunity for physics and engineering > >> to come to> >> the rescue. Does anyone know of neat tricks that would make the > >> heat loss> >> more manageable? Or is Duluth, MN just the wrong place for one of > >> these> >> domes?> >> > That's an interesting problem. As is characteristic of> > real-world problems, there are many many angles that need> > to be looked at.> >> > Here's how I would start the analysis:> >> > The dome serves three main purposes> > a) Cuts down the wind.> > b) Keeps the snow off the ground.> > c) Retains heat over some timescale.> >> > If they just turn off the heaters, the dome will continue to> > serve purposes (a) and (b).> >> cut> > _______________________________________________> Forum for Physics Educators> Phys-l@carnot.physics.buffalo.edu> https://carnot.physics.buffalo.edu/mailman/listinfo/phys-l_________________________________________________________________