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#1
04-07-2008, 09:59 PM
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DIY Heat Recovery Ventilator ?
I don't really need a HRV in the true sense for what they are designed for. I need something to deal with the possible humidity problems from a large tank.
This is my idea... First my canopy will be sealed off from the air in the room in which it sits. Heat from my lights is dealt with in sump. So I am looking for a way to pull the hot, humid air from inside the canopy to the outside of my house. I can easily punch a hole in the wall behind the tank, it's sits partially on a outside wall. The only concern is replacing the air in the canopy as it's being pulled outside. I could put a vent in the opposite end of my canopy and allow the air to be drawn in from the room but this is basically pumping my expensively heated air outside, not very energy efficient. So I was thinking about having the air drawn in from outside as well as vented outside, of course in the winter this is going to be way too cold. So..... Why couldn't a person connect a pile of dry vent hose together (because they are fairly cheap) and snake them all over the ceiling in the basement thus allowing the new air time to warm from the house temperature? A person could even have the hose coiled up in numerous places to create even more "acclimation" time. Thoughts???
__________________
 230 mixed reef / 230 gal sump/fuge 
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#2
04-07-2008, 10:12 PM
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So your concern is the humidity? What about some type of small de-humidifier built into the canopy? Not sure if there are any small enough to fit into a canopy, but might be worth the look. Who knows...maybe the rescued water from the dehumidifier can be filtered and fed back into the sump as your top-off water.
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#3
04-07-2008, 10:18 PM
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Either way, you're still paying to heat that air. The air you draw from outside will take a specific amount of energy to heat to room temperature, and that energy will come from your furnance/fireplace/heat pump/cookstove... whatever. Another minor problem is that it will take more fan than you think to push much air volume through any amount of dryer hose -- that stuff is fairly resistant to air-flow with all it's ridges and bends.
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#5
04-07-2008, 11:37 PM
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Well there ya go then, won't work properly. Thanks everyone, time to re-think.
As well as humidity control I would like fresh air circulating above the water.
__________________
230 mixed reef / 230 gal sump/fuge
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#6
04-07-2008, 11:55 PM
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How much air you talking of moving?
If your talking to move the moisture evapourated would think you could get by with a reality low CFM. Just do what your thinking (vent hole opposite to let in the room air in) and could use a small in-line fan such Princess Auto carries to boost furnace ducts or fab something up with a small muffin fan.
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#7
04-07-2008, 11:58 PM
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Quote:
That is exactly what I am talking about, almost a whisper of air would do it I think.
__________________
230 mixed reef / 230 gal sump/fuge
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