Open vs Closed- Loop System on Size of Dryer
Open vs Closed- Loop System on Size of Dryer
(OP)
To preserve piping and equipment in our mothballed plant, we intent to utilize desiccant dehumidifier to blow dry air in systems and maintain RH in range of 30-40%. Dryers will be installed indoor. I appreciate your insight on the followings:
1-What is governing formula for sizing the dryer?
2-What is ratio of dryer capacity in case of a closed loop vs open system (venting air)? How much larger dryer becomes for an open circuit as we have challenges to establish a closed loop drying.
1-What is governing formula for sizing the dryer?
2-What is ratio of dryer capacity in case of a closed loop vs open system (venting air)? How much larger dryer becomes for an open circuit as we have challenges to establish a closed loop drying.





RE: Open vs Closed- Loop System on Size of Dryer
Sizing of dehumidification obviously depends on the OA infiltration and with that the climate. and what temp is supposed to be in there? If you allow it to drift to 90°F in summer, 30% may be easy. but if you want 70°F, 30%RH are difficult.
RE: Open vs Closed- Loop System on Size of Dryer
RE: Open vs Closed- Loop System on Size of Dryer
- what climate
- will any processes take place producing humidity
- what infiltration / ventilation
- any heating or cooling going on
- how critical is meeting the 30-40% Can it exceed for some days? thsi relates to the question why you need 30-40%?
for example,if this is an empty hall in Colorado, you don't need to do anything. If this is a Florida warehouse with some indoor water evaporation you need to do a lot. It all depends on the above...
RE: Open vs Closed- Loop System on Size of Dryer
RE: Open vs Closed- Loop System on Size of Dryer
RE: Open vs Closed- Loop System on Size of Dryer
RE: Open vs Closed- Loop System on Size of Dryer
RE: Open vs Closed- Loop System on Size of Dryer
RE: Open vs Closed- Loop System on Size of Dryer