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Exhaust air Heat recovery many exhaust air fans to one intake air fan ?
hello , i need to install exhaust air heat recovery exchanger for commercial center, there is multiple exhaust air fans , there is only one air intake fan , how can i use a heat recovery system to linke between the many exhaust fans & the one outdoor air intake fan , & what is the best type of heat recovery for this purpose , plate air/air heat exchanger Or thermal wheel ....?
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If you have multiple Evac with no common duct.
Maybe going with a heat recovery chiller and water coil(or glycol)
Hard to say but it's a possibility that I think might work.
All depend on equipment cost VS payback.
Be sure to respect minimum water volume specified by manufacturer (around 3 to 6 gallon per ton)
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What is the total CFM of the exhaust and total CFM of the intake? How far apart are the exhaust fans and how far away from the intake fan?
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HRV vs ERV depends on your locale, dry desert or "Green grass" climate.
Flat plate is easier to maintain than a wheel.
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You could potentially use a run around coil on all the exhaust ducts and pipe the water to the intake coil. The control is a bit tricky, I think thermostatic valves could be used to balance each run around (exhaust side). I've never done this before, but am designing a similar system currently and this is my plan.
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What type of units serve the tennents? Are you trying to save on cooling or heat? Are the spaces like a mall? Need more info.
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