 Posted 1/21/2006 8:47:01 PM
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Hello,
I have a 12,000 gallon indoor pool with a dedicated HVAC and dehumidifier system.
The water is set for 80 degrees and the dehumidifier is set for 75%.
I do not have a cover on the pool and also do not have the heater on for the pool room.
When the air temp outside is 40 or below, the dehumidifier is running 24/7.
I have opened the skylights in the pool room to stop the dehumidifier from running so much but it seems to make the pool heater to run harder.
What would be the optimum settings for both the HVAC and De-humidifier for energy efficiency?
THank you,
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Posted 1/2/2007 5:40:32 PM
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"OPening the skylights" means? If you are literaly opening the window, all the warm air will rush out. Of course along with the heat, the moisture exits allowing cold dry air to rush in. This is a heat intensive process.
Normally we suggest, 80^F Water and 60%RH air.
With +50%RH during cold outside weather, care is required to avoid the moist internal air from penetrating the walls/insulation Because your dehumidifier operates 24/7, does not express cost until we know the volts and amps of the dehu. Covering the water with plastic will dramatically reduce the amount of dehumidification require to maintain the desired %RH. This also limits the amount of heat generated by the dehumidifier. The Hi-E Dry dehumidifiers remove +5 pints of water per KW and generate 1,700 btus of heat per pint of dehumidification. Posting your amps and volts allows to calculate the cost heat and dry per hour. Thanks for a good post. Ken
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Posted 1/2/2007 5:40:32 PM
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Ken,
Thanks for the info. I have crawled up to the attic and looked at the dehum unit. It is a DCA running min. Amp 32.1 with Volt 208/230 phase 1.
I have set the HVAC to 70^F, Water temp 80^F and dehumid to 70%.
I will look into custom fitting plastic over the pool, in hopes of reducing humidity.
With outside temperatures at 10^F, the room is condensating and water is piling up by the side doors and windows.
Hopefully, the plastic cover on the pool will increase efficiency of gas an electric use.
Thanks again for your insight.
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Posted 1/2/2007 5:40:32 PM
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| 32 X 220 = 7000 watts or 7KW @ $.08/kw = $.56 per hour. Suggest you keep the room warm enough and the air dry enough to avoid condensation. Recommend 80^F for air temp and minimum of 60%RH. Warmer helps warm cool surfaces. Also suggest you look at the solar blanket bubble pack to cover water. You can cut to fit. The need of dehumidifying will slow dramatically. Keep us posted. Ken
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Posted 1/2/2007 5:40:32 PM
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Ken,
We have purchased a solar bubble cover and will cut to fit.
I will keep you posted for the results.
THanks,
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Posted 1/2/2007 5:40:32 PM
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Just to followup. The bubble cover works out great.
The Humidity in the pool room has been dramaticaly reduced.
No more water piling up on the windows and the De-Humidifier unit has not even kicked on once!
We'll wait to see how things are when it warms up outside.
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