Humidity is a tough issue and needs to be viewed and analyzed by engineers and experts in the area of Building Automation. It is akin to controlling the weather inside your building where many variables must be considered.
How air tight is the building? Where are you located? How are the current mechanical control systems performing? Is your system calibrated properly (sensors, valves, actuators, air flow etc.) Is there sufficient mechanical system capacity to deliver needed de-humidification / humidification and meet outdoor air intake requirements for good indoor air quality?
Bruce Zerr is an expert in the BAS industry with many years in the field. He would be a good resource either by direct assistance or pointing you toward local experts.
bazerr@hotmail.com
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Kurt Sigmund
Museum Associate
St. Augustine Lighthouse & Museum
St. Johns FL
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Original Message:
Sent: 09-04-2015 07:03 PM
From: Reginald Cabanilla
Subject: Building Automation Systems
I am researching the same topic, fluctuations in humidity and how to stabilize. I have been researching Desiccant Wheel Dehumidifiers. Maybe having one of these on your rooftop will help with having a consistent RH% throughout the space.
Here is a great article related to Desiccant Dehumidification. Do not put the link in the web browser rather paste it in google search.
http://www.nrel.gov/docs/legosti/old/7010.pdf
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Reginald Cabanilla
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Original Message:
Sent: 08-25-2015 09:14 AM
From: Claudia Berg
Subject: Building Automation Systems
What type of building automation system are you using, are you able to keep temperature and humidity levels within the acceptable four to five degree range? Much of the country is in climate challenging environments, can your HVAC system adapt to meet museum standards? We have a new system and temperature levels are well within an acceptable range, humidity levels however are proving to be a challenge. Humidity readings vary more than ten degrees in a 24-hour period on a regular basis. System programmers and building engineers are at a loss to resolve the situation. Does anyone have experience successfully stabilizing humidity levels?
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Claudia Berg
Director
State Historical Society of North Dakota
Bismarck ND
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