FRESH AIR INTAKES
More and more residential and commercial applications are using energy recovery ventilators (ERVs) to provide some fresh air for ventilation while extracting the heat energy from the air being exhausted. This illustration shows an ERV with a rotating heat exchanger where both latent and sensible heat transfer take place.
The following was an excerpt from the manual, PREPARING FOR THE NATE EXAM: Gas and Oil Heating, available from the online store at the Refrigeration Service Engineers Society. RSES.ORG
How this rotating exchanger works please elaborate it a little more?
Please go to this link to see more details on a simple ERV that I service on a regular basis. Thanks for the reply,
http://dl.dropbox.com/u/7565852/Greenheck%20ERV%20Maintenance.pdf