[Equest-users] Baseline Building HVAC system

[Rob Hudson]

I am using ASHRAE 90.1 2007 for LEED accreditation.  The system is electric,
as of right now.  My company is only the modelers and not the designers, so
things may change.  This was why i left it a little vague because i can't
say for certain if it will be electric or fossil fuel (75% certain it will
be electric).  I'm not sure if the below ground floor makes a difference
because it is a combination of conditioned office space and
storage/mechanical space.

thanks for your response

On Mon, Mar 29, 2010 at 4:31 PM, Pasha Korber-Gonzalez <
pasha.pkconsulting at gmail.com> wrote:

> Rob,
>
> first of all---its just not that simple.  It depends on:
>
>    1. what guidelines are you supposed to use for the baseline?  If this
>    is a LEED project which version of LEED will dictate which ASHRAE 90.1
>    version you reference.  If it is not a LEED project who is the 'authority'
>    that is approving your baseline--they will have guides that they want to see
>    used for the baseline.
>    2. What are the proposed building systems for the building design--what
>    has the ME designed and what type of heating source is being used.  When you
>    use ASHRAE 90.1 App. G, the baseline system selection table depends on the
>    size of your building, the classification (non-res, res), and the heat
>    source being used in the actual building design.
>    3. There really shouldn't be any impact of your below ground floor on
>    the decision/selection of your baseline systems, what is the below ground
>    space and how is your ME designer conditioning that space per the design
>    drawings.
>    4. If you do not have any design direction from your ME, then you will
>    have to take a more "assumptive" approach as the simulator and this can be a
>    very tricky approach if you "assume" incorrectly--but many factors to help
>    identify a valid assumption will go back to whatever your case is for the
>    first three points I have shared.
>
> Do you have a copy of the ASHRAE Standard 90.1?   We are happy to help, but
> we will need more detail from you so that we can point you in the right
> direction.
>
> Pasha
>
>
> PK Consulting
>
> On Mon, Mar 29, 2010 at 1:42 PM, Rob Hudson <rdh4176 at gmail.com> wrote:
>
>> I have an office building that i am modeling that has 3 above ground
>> floors and one below ground floor.  the total square footage is 32,000.
>> would this qualify as a VAV for the baseline or a single zone constant
>> volume?
>> The below ground floor is the part that is making me have second
>> thoughts.  my first thought was VAV, but i figured i would pose the question
>> to get some healthy conversion.
>>
>> thanks,
>>
>> --
>> Rob Hudson
>>
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>


-- 
Rob Hudson
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