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Subject Author Date
Can you please help with my homework? kool 07-13-2007
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Posted by kool on July 13, 2007, 7:22 pm
I have been asked to arrange a quote to cool only an existing building
(arena with bowl type seating) for summer use as now the conditions are
unbearable during events.

I am thinking that 4 BIG units might be the way to go,one in each corner,
probably splits.

I can't seem to find a design condition chart from ashrae or anyone else on
google. It is a fairly moderate year round climate here, from memory I think
we'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.

Indoor Conditions;24 C/75 F @ 50% RH

Design Conditions; ?

Occupancy load; 3000x500=1,500,000 btu

Square footage;280'x165'= 46,200

Cubic footage; 280'x165'= 46,200x48=2,217,600



Posted by The Freon Cowboy on July 13, 2007, 7:50 pm
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




Posted by kool on July 14, 2007, 12:45 am

> 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)



Posted by on July 14, 2007, 10:15 am
wrote:

>
>> 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)
>

        The concept of heat load holds, but Man J does not cover
commercial buildings in its design considerations.

        I forget if the commercial book is Manual N or T ????


--
Click here every day to feed an animal that needs you today !!!
http://www.theanimalrescuesite.com/

Paul ( pjm @ pobox . com ) - remove spaces to email me
'Some days, it's just not worth chewing through the restraints.'
'With sufficient thrust, pigs fly just fine.'
HVAC/R program for Palm PDA's
Free demo now available online http://pmilligan.net/palm/

Posted by Zephyr on July 14, 2007, 3:54 pm
Manual N

--
Zyp

> wrote:
>
> >
> >> 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)
> >
>
> The concept of heat load holds, but Man J does not cover
> commercial buildings in its design considerations.
>
> I forget if the commercial book is Manual N or T ????
>
>
> --
> Click here every day to feed an animal that needs you today !!!
> http://www.theanimalrescuesite.com/
>
> Paul ( pjm @ pobox . com ) - remove spaces to email me
> 'Some days, it's just not worth chewing through the restraints.'
> 'With sufficient thrust, pigs fly just fine.'
> HVAC/R program for Palm PDA's
> Free demo now available online http://pmilligan.net/palm/



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