Economy cycle - free cooling
Economy cycle - free cooling
(OP)
I have an air handlig unit that has a fixed outside air damper and a fixed return air damper.
Outsdie temps vary from -5 to 25 dgeC so I want to add economy cycle control to the unit.
I will install an entalphy sensor outside and one on the return air duct. If the return entalphy is greater then the outside air during cooling mode I will use use O/A and modulate the return damper closed and the outside damper open as my first stage in cooling....there after I will use the cooling coil valve. Is this OK?
Is there anything else I need to be careful off??
I have seen some control descriptions mention disabling economy cycle when the outsdie air is too humid or too cold and dry...why I do not know...heard mention of humidity problems... do I need to worry about this with my proposal??
Your help would be appreciated... I wanna keep it simple but good.
REMP
Outsdie temps vary from -5 to 25 dgeC so I want to add economy cycle control to the unit.
I will install an entalphy sensor outside and one on the return air duct. If the return entalphy is greater then the outside air during cooling mode I will use use O/A and modulate the return damper closed and the outside damper open as my first stage in cooling....there after I will use the cooling coil valve. Is this OK?
Is there anything else I need to be careful off??
I have seen some control descriptions mention disabling economy cycle when the outsdie air is too humid or too cold and dry...why I do not know...heard mention of humidity problems... do I need to worry about this with my proposal??
Your help would be appreciated... I wanna keep it simple but good.
REMP





RE: Economy cycle - free cooling
http://www.taylor-engineering.com/downloads/articl...'t%20Work%20-%20Taylor%20&%20Cheng.pdf
RE: Economy cycle - free cooling
some contractors tend to act as fortune tellers, but only if they are sure that they will not be rendered accountable for lousy performance.
in general, it is said that such free cooling investment is feasible if you need cooling at outdoor temperature of 0 deg. C or lower.
RE: Economy cycle - free cooling
RE: Economy cycle - free cooling
Best to you,
Goober Dave
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RE: Economy cycle - free cooling
RE: Economy cycle - free cooling
RE: Economy cycle - free cooling