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NC-2009 EAp2:Minimum Energy Performance

Relative humidity control in base case

Hi there, need help for energy simulation. We have a workshop consists of two air conditioned workshops/labs that require 7ach and Relative humidity to be maintained at 50+/-10%. To do that, we have included a reheat system using electrical heater in the Proposed case to control the humidity level. Can we include that in the base case as well? Because without electric reheat in the base case, our simulation model shows that the RH levels would be constantly about 70%, hence although it would meet the temperature set points, it would not be able to meet the design conditions for RH. Thanks!

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Marcus Sheffer
LEED Fellow
7group / Energy Opportunities
LEEDuser Expert
4454 thumbs up

Fri, 12/13/2013 - 14:03

What is your baseline system?

Sun, 12/15/2013 - 06:18

Baseline system is system 4. DX Cooling workshop is only one level. thanks
Profile picture for user sheffer
Marcus Sheffer
LEED Fellow
7group / Energy Opportunities
LEEDuser Expert
4454 thumbs up

Mon, 12/16/2013 - 14:52

I do not think you can add reheat to this system for humidity control. If there are humidity set points in the proposed they must be identical in the Baseline. 90.1 clearly discourages the use of reheat as it is typically a wasteful practice. So it makes sense that you would pay a penalty for it.

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