Hello Everyone,
I am working on a project and I have got the reviewer comments for the
project.
As per review comments, they want me to confirm that the building
conditioned spaces are meeting the norms (for temperature 24?C ? 2? and
Relative humidity 50%-60%).
My project location is in India (warm & humid climate) and below are the
HVAC parameters considered in the proposed model:-
Thermostat set point - 75?
Zone entering minimum supply temperature - 55?F
Humidity control range - 50% - 60% under Air side HVAC system tab.
System type - Single Zone Reheat
After the above necessary inputs are considered in the proposed case to
bring the Relative Humidity within range, software generated SS-N reports
indicate that Relative humidity of particular air side system falls in the
range of 50%-59% however, there are few hours that fall in the range of
40%-49% .
Anyone help me on how to shift this few hours from the range of 40%-49% to
50%-59% range and how the eQuest software works to maintain the required
Relative Humidity?
Thanks in advance for your valuable reply on this.
Thanks & Regards,
Nitin Harjai
Hello Nitin,
I wanted to ask you to clarify something that wasn?t clear to me. Is the reviewer indicating that they expect that the norm for building conditioned spaces should be having relative humidity between 50% and 60% or is that the specific requirement of your building? Because the way it should be handled is that you model the Proposed design model based on the actual design requirements for relative humidity and then make sure that the Baseline model is modeled with the same relative humidity range.
The reason I ask is that for most building types that I?ve worked on, there isn?t a minimum relative humidity setpoint only maximum. Therefore, if that should also apply to your building, then I would suggest not worrying about the few hours in the 40-49% range.
Alternatively, if that does matter, than I would need additional information to help troubleshoot your problem, such as what time of the day and season of the year do those hours occur, are you including a humidifier when you set a minimum humidity setpoint, etc.
Thanks,
Alex
Alex Chapin PE, BEMP, LEED AP BD+C, O+M
Energy Engineer | Mason & Hanger
A Day & Zimmermann Company
O 804.521.7072
4880 Sadler Road, Suite 300 | Glen Allen, VA 23060
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