I am working on finishing my basement.

Concrete walls with R11 half-wall insulated followed 2x4 wood framing
with R13 insulation. Total: 1500 sq ft

Rhvac computes heat loss at
Room 1: 16 BTU/hour
Room 2: 17 BTU/hour
Room 3: 200 BTU/hour

I am guessing Room 3 supply duct - 4" metal duct,
Room 1, Room 2 supply -?????

Room 2 to be used as exercise room.

Brian wrote:
I am working on finishing my basement.

Concrete walls with R11 half-wall insulated followed 2x4 wood framing
with R13 insulation. Total: 1500 sq ft

Rhvac computes heat loss at
Room 1: 16 BTU/hour
Room 2: 17 BTU/hour
Room 3: 200 BTU/hour

I am guessing Room 3 supply duct - 4" metal duct,
Room 1, Room 2 supply -?????

Room 2 to be used as exercise room.

Are you sure you cranked those numbers right? The body kicks out a
fair amount of heat on its own. Figure 400 BTU/hour for normal
activity and much more if you're exercising.

With those heat loss numbers, I'd be more worried about keeping the
rooms cool.
http://ergo.human.cornell.edu/studen...condnotes.html

R

You are right,

I can't read at night....

Scope ft²/Ton Area S.Gain L.Gain Net.Gain S.Loss W.CFM S.CFM Sys.CFM D.Size
Zone 3 1,547 1,980 1,200 3,180 6,822 91 93 93
14-Family 1,124 460 400 860 4,365 58 22 22 3-4"
15-Exercise 214 1,060 400 1,460 1,239 17 50 50 1-4"
16-Audio/Visual Room 209 460 400 860 1,218 16 22 22 1-4"

I am not sure if I sould add additional Sensible load / or ventilation
CFMs for an exersize room?

How can I determine return size?

"Brian" wrote

I am working on finishing my basement.

Concrete walls with R11 half-wall insulated followed 2x4 wood framing
with R13 insulation. Total: 1500 sq ft

Rhvac computes heat loss at
Room 1: 16 BTU/hour
Room 2: 17 BTU/hour
Room 3: 200 BTU/hour

I am guessing

Yes....

Yes you are.......

Brian wrote:

Scope ft²/Ton Area S.Gain L.Gain Net.Gain S.Loss W.CFM S.CFM Sys.CFM D.Size
Zone 3 1,547 1,980 1,200 3,180 6,822 91 93 93
14-Family 1,124 460 400 860 4,365 58 22 22 3-4"
15-Exercise 214 1,060 400 1,460 1,239 17 50 50 1-4"
16-Audio/Visual Room 209 460 400 860 1,218 16 22 22 1-4"

I am not sure if I should add additional Sensible load / or ventilation
CFMs for an exercise room? How can I determine return size?


Brian, Check the linked page below for some ideas. - udarrell

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PROPER A/C UNIT & DUCT SIZING ESSENTIAL for EFFICIENCY & BTUH PERFORMANCE
http://www.udarrell.com/proper_cfm_b...syste ms.html