[Equest-users] Define a zone as open to below

[Carol Gardner]

Hi Udana,

If you set up your mezzanine using a separate shell from the first floor
that might be what is causing you this problem. I don't think one shell can
access daylighting from another shell.

Carol

On Tue, Nov 23, 2010 at 7:06 AM, Nick Caton <ncaton at smithboucher.com> wrote:

>  I’ve played around with it in the past, and in my experience you will not
> get accurate lighting behavior if you place the sensor remote from the space
> whose lighting is being controlled.  It’s not fresh in my mind, but I
> believe if you look up the help entries regarding those sensors you’ll find
> eQuest handles them in a way that interacts directly with its location in
> relation to the surfaces and fenestrations on the interior of the space in
> question.
>
>
>
> In short, if you wish to control lighting with daylight sensors in a
> 2-story space, it *must* be a single space/volume.  It sounds now like you
> are trying to pull this off from the DD-wizards… I think your options are
> more limited there.  You might try (1) adjusting the upper-level LPD to
> account for the ground level lighting, or (2) making the multi-story space a
> separate shell wrapped by the other(s)… the latter is something I’ve done in
> the past but I’d recommend the detailed edit fix I suggested below as a
> relative time/headache-saver.
>
>
>
> Further discussion between myself and others on this topic is in the
> archives.
>
>
>
> ~Nick
>
>
>
> [image: cid:489575314 at 22072009-0ABB]**
>
> * *
>
> *NICK CATON, E.I.T.***
>
> PROJECT ENGINEER
>
> Smith & Boucher Engineers
>
> 25501 west valley parkway
>
> olathe ks 66061
>
> direct 913 344.0036
>
> fax 913 345.0617
>
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>
>
>
> *From:* Udana Ratnayake [mailto:udanasr at gmail.com]
> *Sent:* Monday, November 22, 2010 11:02 PM
> *To:* Nick Caton
> *Cc:* equest-users at lists.onebuilding.org
> *Subject:* Re: [Equest-users] Define a zone as open to below
>
>
>
> I'm in need of placing a day light sensor to sense day light coming from
> the skylights and control light level of the ground floor accordingly. even
> though i make the first floor open to below the sensor doesn't seem to take
> skylights in to account. is there anyway to sense the light coming from
> skylights to control the lighting level with a sensor that is placed in the
> floor below?
>
> Thanx & Best Regards,
> Udana.
>
>  On Sat, Nov 20, 2010 at 2:01 AM, Nick Caton <ncaton at smithboucher.com>
> wrote:
>
> Before I was aware of ‘open to below’ and similar options in the wizards
> (oh, the perils of being self-taught!), I came up with a practice of
> creating multi-story spaces by making separate zones for each level from the
> wizard, then in detailed mode deleting all but the lowest, then modifying
> the remaining space/zone to get the correct height/volume.
>
>
>
> Some further tips:
>
> -          Once done with the geometry edits, review that space’s internal
> loads – you may want to revise depending on your situation.
>
> -          You might consider for very tall spaces whether there is an
> “unconditioned” layer from an HVAC perspective that you might want to define
> as a separate, unconditioned space (think plenum).
>
> -          You can optionally pursue extra steps to tie the bounding
> surfaces of adjacent spaces to the multi-story space if you deem it
> necessary for accuracy.  If you anticipate you’ll want to do this, pay
> attention before deleting the individual multi-story spaces so that you
> don’t accidentally remove some surfaces you’d like to have associated from
> the adjacent spaces… this is a case where thinking ahead a few steps can
> save you a headache later.
>
>
>
> ~Nick
>
>
>
> *Error! Filename not specified.*
>
> * *
>
> *NICK CATON, E.I.T.*
>
> PROJECT ENGINEER
>
> 25501 west valley parkway
>
> olathe ks 66061
>
> direct 913 344.0036
>
> fax 913 345.0617
>
> *Check out our new web-site @ *www.smithboucher.com* *
>
>
>
> *From:* equest-users-bounces at lists.onebuilding.org [mailto:
> equest-users-bounces at lists.onebuilding.org] *On Behalf Of *Udana Ratnayake
>
>
> *Sent:* Friday, November 19, 2010 1:03 AM
> *To:* equest-users at lists.onebuilding.org
>
> *Subject:* [Equest-users] Define a zone as open to below
>
>
>
> I'm modeling a two storied building with a mezzanine area in the first
> floor and i need to define the rest of the first floor area apart from the
> mezzanine as open to below. is it possible to define a particular zone as
> open to below in the detailed mode? if so how?
> Thank you in advance.
>
> --
> Udana
>
>
>
>
> --
> Udana
>
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-- 
Carol Gardner PE
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