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Posted by kool on July 16, 2007, 4:01 pm
> The best advice for you "kool" [I hope you are the original O.P.] is it
> sound like you are [in over your head.] As a contractor, you really
> should
> consider only taking jobs your are good at. Taking on jobs that you [have
> difficulty with] is not profitable.
>
> Large projects [like a sports arena] should be performed by those who are
> 'comfortable' with doing large jobs of that scope. [Unless you have a
> 'network' of contractors you can work with - who will allow you to sub-the
> work.] Which BTW is not unheard of.
>
> --
> Zyp
>
>>
>> > guess global warming is a reality !!!!,
>> > bone up on j manual calculations and kinetic heat load
>> >
>> > good luck
>> >
>> >
>> >>I have been asked to arrange a quote to cool only an existing building
>> > e(arena with bowl type seating) for summer use as now the conditions
>> > are
>> > tunbearable during events. wI am thinking that 4 BIG units might be the
>> > way to
>> > go,one in each corner, iprobably splits.rtI can't seem to find a design
>> > condition chart from ashrae or anyone else on lgoogle. It is a fairly
>> > moderate
>> > year round climate here, from memory I think hwe're talking around 80f
>> > summer
>> > but it hit the mid 90's two days ago.Just the people load would be 125
>> > tons
>> > and 45,000 cfm o/air required..As this will be a major financial
>> > investment,
>> > I need to do it right the first time and any input on design
>> > considerations
>> > would be appreciated. Thanks. @Victoria B.C.gn Indoor Conditions;24
>> > C/75
> F
>> > @
>> > 50% RHx5Design Conditions; ?qu Occupancy load; 3000x500=1,500,000 btuoo
>> > Square
>> > footage;280'x165'= 46,20060 Cubic footage; 280'x165'=
> 46,200x48=2,217,600
>> >
>> Do manual J calcs. cover loads of this size?I haven't used them as I
> haven't
>> done much design only service, repairs, installs and a bit of manufacture
>> (shop built special orders)
>>
Thanks for the advice Zephyr, but I am not a contractor. I will be hiring a
contractor do acually do the job but right now I am just exploring the
different possibilities and ways of cooling the building.There are several
options and possibly using our existing ice plant system to cool a glycol
loop through a brine to glycol plate and frame heat exchanger is one of
them. This system just sits idle during the summer while the building is
used for lacrosse, concerts and trade shows etc. We will be putting the ice
back in early this year, mid august, as the Vancouver Canucks are using it
for a training and rookie camp. This will allow us until spring to try and
get a system in place for next summer.
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