Clothes dryer heat recovery system

GaryGary · 12-16-12, 10:36 AM

Hi,

In this paper: http://www.ewp.rpi.edu/hartford/user...0Exchanger.pdf

They describe a counter flow heat exchanger that uses sheets of twinwall polycarbonate that are spaced about 1/4 inch from each other. Its efficient, and may be easy to make.

I'm having trouble figuring out how they get the air into and out of the polycarbonate sheets? That is, what is the configuration on the ends of the exchanger that allows them to separate the one flow that goes through the channels in the twinwall from the 2nd flow that is going between the sheets of twinwall?

I understand how the cross flow ones are setup with the channels running at right angles to each other, but I'm not seeing how they do it on this counterflow one.

If anyone has figured this out, please let me know.

Gary

12-16-12, 10:36 AM	#11
GaryGary Apprentice EcoRenovator Join Date: Nov 2008 Location: SW Montana Posts: 139 Thanks: 1 Thanked 21 Times in 15 Posts	Hi, In this paper: http://www.ewp.rpi.edu/hartford/user...0Exchanger.pdf They describe a counter flow heat exchanger that uses sheets of twinwall polycarbonate that are spaced about 1/4 inch from each other. Its efficient, and may be easy to make. I'm having trouble figuring out how they get the air into and out of the polycarbonate sheets? That is, what is the configuration on the ends of the exchanger that allows them to separate the one flow that goes through the channels in the twinwall from the 2nd flow that is going between the sheets of twinwall? I understand how the cross flow ones are setup with the channels running at right angles to each other, but I'm not seeing how they do it on this counterflow one. If anyone has figured this out, please let me know. Gary