View Full Version : Load Calculation for a partially finished basement
04-30-2010, 09:19 AM
How is a partially finished basement handled when doing a load calculation. The finished basement is separately heated and cooled. Only the finished area has vents/returns. No vents/returns are in the unfinished area. The walls between are uninsulated. Some of the finished area includes outside walls. Since the unfinished area is unconditioned and uninsulated should it be considered in the load calculation?
04-30-2010, 09:28 AM
everything exterior to the space being heated and cooled as far as ceilings, floors, walls, windows, and door must be calculated regardless of insulation or not. If you're going to ultimately insulate the walls then you may as well calculate it as such, otherwise you're going to oversize your equipment.
04-30-2010, 09:32 AM
What part of the U.S. is the basement in? Usually the sensible cooling load is -5000 btus and the latent load is +3,000 btus per hour. This means a premium dehumidifier like a Santa Fe Compact or Ultra-Aire 60 is idea to remove the moisture and add some heat. They both also have the feature of being able to bring the correct amount of fresh air to purge indoor pollutants.
05-01-2010, 07:58 AM
Thanks for the response. I am not sure of your answer, guess my question wording was bad.
My thinking is that the unconditioned basement area should not be included in the basement load calculation.
And the walls between the conditioned and unconditioned areas be treated as exterior walls. For heating that area has been measured @59-60 degrees. The unconditioned area gets heat from ducts, floor above and walls between the conditioned/unconditioned areas. If you agree, I would think the calculation would use a wall temp difference of 75 degree inside (conditioned area) and 59 degree outside (unconditioned area).
Location mid Illinois.
05-01-2010, 08:15 AM
Yes. List the walls as partitions. And enter the temp difference.
05-01-2010, 08:30 AM
Teddy bear represents just one manufacturer of dehumidification products.
Please keep that in mind when viewing his posts.
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