[esp-r] Re: Connecting two zones with a stairwell

[Andrew Horsford]

Hello Olli & all,

I went into the constructions database & created an item made of a single layer of air (so that air can move through the gap like a real hole would) but it says that it's not allowed....

So does that mean that it's not possible to model heating the top floor of my house as a consequence of the heated air in the lower floor rising up the stairwell? Does heat just not move around in the model like this....? 

What should I do for this?

Thanks,
Andrew
  ----- Original Message ----- 
  From: Oliver Bucks 
  To: Andrew Horsford ; esp-r at lists.strath.ac.uk 
  Sent: Thursday, October 26, 2006 4:57 AM
  Subject: [esp-r] Re: Connecting two zones with a stairwell


  Hello Andrew,

  Unless you are examining convection patterns, thermal stratification or other air movement in detail, I don't think you need to be worried about the exact geometry of your stairs. However, It might be a nice idea to include a cube (or 'wedge') of roughly the same mass and surface area as your stairs in the zone you'll create to represent your stairwell. This is simply a matter of creating the vertices you want inside the zone concerned and creating surfaces to represent a closed cube/wedge 'staircase' inside your zone.

  You can't have 'holes' in your zones' peripheries. You will have to create a 'fictive' material and construction. This fictive material must have very low density, specific heat, and absorbtion. It must have high permeability, IR emissivity....  It should be transparent too. As if it isn't there.

  The construction you create using the fictive material will make up the surface between the 1st floor and the ground floor - your 'hole'.

  Olli


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    ----- Original Message ----- 
    From: Andrew Horsford 
    To: esp-r at lists.strath.ac.uk 
    Sent: Wednesday, October 25, 2006 6:19 PM
    Subject: [esp-r] Connecting two zones with a stairwell


    Hello all,

    I'm new to ESP-r and as a first run I thought I'd make a model of my house and so far, so good: the ground floor is complete as far as walls, windows & doors. I now want to add the stairway from the ground floor to the top floor but I'm not sure how to proceed. Should I just create a hole in the ceiling/floor and put in a 45º slope leading up?

    I know it might not really matter & in terms of heat-flow it's probably the same as a hole in the ceiling/floor, but I wanted to check in case there's some standard way of doing this.....

    Thanks for your help,
    Andrew Horsford

    ASPAM=antispamwpk42


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