[Build] HVAC FAQ

[Ben Kochie]

To respond to questions I just stuck it all in one email.

* The HVAC system is to provide fresh air when large numbers of people are in the space.
* The fan system has filters to remove some of the "Mission" from the incoming air.
* A large fan doesn't do either of these things
* "For the 2 days a year when we need it" isn't solved by any fan-only solution, we would need active cooling for those days.
* Active cooling/heating is as easy add-on option with the air mover, but I doubt we'll add cooling/heating.
* Part of the HVAC plan is to also provide negative venting as well as the fresh-air feed.  The ammount of negative venting (cubic-ft/min) we need is small compared to the fresh-air needs.

Yes, I understand that we're over budget.  This is why we're getting most 
of the HVAC stuff for free.  The HVAC guy and I are still scrounging 
around for more free stuff to minimize anything we might need to buy.

Right now I'm working with a $0 budget to install this unit.

-ben

  "UNIX is user-friendly, it's just picky about its friends."

On Thu, 3 Sep 2009, Shannon Lee wrote:

> Maybe I'm misunderstanding something, but I thought that out primary goal was a negative
> ventilation system -- ie, removing things (fumes &c) from the space, rather than bringing more
> air in?
> --S
> 
> On Thu, Sep 3, 2009 at 11:08 AM, Ben Kochie <ben at nerp.net> wrote:
>       I also got word from the HVAC guy that he was able to find a smaller more
>       appropriate fan unit for our space.  He might be able to deliver it this
>       weekend.
>
>       -ben
>
>        "UNIX is user-friendly, it's just picky about its friends."
> 
> On Thu, 3 Sep 2009, Zedd Epstein wrote:
> 
> >
> > Drywall:
> > The shop space is done. We have 11 more pieces to put up, then all of the drywall is up.
> If I
> > can get some people here in the next few hours, we should be mudding by this afternoon,
> and be
> > done by Friday night.
> >
> > Electrical:
> > Both of the runs to the panels are pulled.
> >
> > We're going to need another dump run done in the near future.
> >
> > Thanks to everyone that's been coming out to help.
> >
> > Zedd
> > 415-318-0296
> >
> >
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> 
> --
> Shannon Lee
> (503) 539-3700
> 
> "Any sufficiently analyzed magic is indistinguishable from science."
> 
>