Improve efficiency of heat recovery wheel
Improve efficiency of heat recovery wheel
(OP)
Hi everyone,
Just wondering if anyone knows how to improve the efficiency of a heat recovery wheel? Other than good maintainance to ensure its performance, is there any other way to enhance it further? For eg, increase speed of rotation etc. I can't seem to find much info on how a heat wheel is designed.
Thanks!
Just wondering if anyone knows how to improve the efficiency of a heat recovery wheel? Other than good maintainance to ensure its performance, is there any other way to enhance it further? For eg, increase speed of rotation etc. I can't seem to find much info on how a heat wheel is designed.
Thanks!





RE: Improve efficiency of heat recovery wheel
Effectiness (Sensible & latent) is normally obtained from the manufacturer data if we give them our airflows across the wheel. but it depend upon the following
1. Exchanger construction (including configuration, heat transfer material, moisture transfer properties, transfer surface area, airflow path, distance between heat transfer surfaces and overall size)
2. Inlet conditions dor both air streams including pressures, velocities, temperatures and humidities.
Having a wheel selected once. efficiency can be improved by varying the airflows and temperature difference across the wheel.
RE: Improve efficiency of heat recovery wheel
I already have recovery wheels installed on site, but I was wondering how I can further harness the cold energy from the exhaust air with the current system?
Other than increasing the exhaust air flow through the wheel, any other ways I can increase energy transfer?
RE: Improve efficiency of heat recovery wheel
pay more money and you can get more energy recovered. What do i mean is that go for a bigger wheel size (higher model No). becuase you can increase the airflows upto a limit only. by increasing the wheel size, the energy gets transferred in a bigger amount. cuz the airflows remain same, while the surface area gets increased, the velocity of airstreams get reduced. and energy get transferred more efficiently
RE: Improve efficiency of heat recovery wheel
You could add a dessicant to the wheel, if it isn't already a total recovery wheel.
RE: Improve efficiency of heat recovery wheel
It basically comes down to the material limitations of the equipment. The same wheel can be substantially more effective at lower air flows. Select for ARI rated effectiveness. If it's in, then you might have no viable options for enhanced effectiveness.
It's up to the manufacturer's to come up with the better mousetrap.
RE: Improve efficiency of heat recovery wheel