[Bldg-sim] Tacoma Washington General Climate

Carol Gardner cmg750 at gmail.com
Tue Sep 7 12:27:42 PDT 2010


Yeah, Morgan is right. We don't have humidity, we have rain. I can get hot
for up to a week in the summer and if you are in a commercial building your
clients will be very unhappy if you don't have AC. A very good climate for
heat pumps VRV/simultaneous heating and cooling/or whatever, depending on
your usage and footprint.

Carol


On Tue, Sep 7, 2010 at 11:42 AM, Morgan Heater <morgan at ecotope.com> wrote:

> John - The Tacoma climate is very similar to Seattle.  The winters are
> cool and wet, and the summers are cool and dry.  The proximity of the
> Puget sound keeps the humidity in the comfort zone in general.  The
> climate is definitely heating dominated, and cooling is unnecessary for
> most occupancies, as long as some moderate amount of attention is paid to
> the envelope design.  A useful climate visualization tool is "climate
> consultant" a free software that you can download here:
>
> http://www.energy-design-tools.aud.ucla.edu/
>
> The psych chart is particularly useful for helping to identify strategies
> for mechanical systems.
>
> Morgan Heater, PE, LEED AP
> Ecotope, Inc
>
> (206) 322-3753 x209
> 4056 9th Avenue NE
> Seattle, WA  98105
>
> -----Original Message-----
> From: bldg-sim-bounces at lists.onebuilding.org
> [mailto:bldg-sim-bounces at lists.onebuilding.org] On Behalf Of Eurek, John S
> NWO
> Sent: Tuesday, September 07, 2010 11:21 AM
> To: bldg-sim at lists.onebuilding.org
> Subject: [Bldg-sim] Tacoma Washington General Climate
>
> To the group,
>
>        I am starting an HVAC design project at Tacoma Washington (I live
> in
> Nebraska).  I can look up the ASHRAE design conditions, but I am wondering
> if
> somebody can give me a clearer picture of the climate.  (This goes with
> the
> change in thinking between designing for worst conditions and designing
> for
> year around energy savings.)
>        I am looking for things to consider in my design.
>
> Examples:  Here in Nebraska it gets really cold and hot and humid.  Due to
> the jet stream the temperature can swing from the 20s to the 70s within a
> week so the design must be able to react.
>        I also finished a design in Colorado which I know is arid and dry.
> Humidity usually a problem.
>
>        I don't know exactly what I'm looking for, I am just not familiar
> at
> all about what to expect.  I think the humidity issue is something I would
> like to know better.  (this may determine if I go with DX or chilled
> water.)
>
> Thank you for any help,
>
> John Eurek PE, LEED AP
> Mechanical Engineer,
> US Army Corps of Engineers
> Omaha District CENWO-ED-DA
> 1616 Capitol Avenue
> Omaha, NE 68102
> Phone: (402) 995-2134
> email: john.s.eurek at usace.army.mil
>
>
>
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-- 
Carol Gardner PE
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