Sexually transmitted diseases -- or STDs -- often are silent, meaning there are no symptoms. Women may not notice any symptoms until they have developed serious complications. Be on the lookout for: A drip or discharge from the penis, urethra, vagina, or anus; the color may be white, yellow, green, or gray.
An energy recovery ventilator (also abbreviated ERV) is a type of air-to-air heat exchanger that not only transfers sensible heat but also latent heat.Because both temperature and moisture are transferred, ERVs can be considered total enthalpic devices.he benefit of using energy recovery is the ability to meet the ASHRAE ventilation & energy standards, while improving indoor air quality and reducing total HVAC equipment capacity.
Maintaining indoor air quality is vital to the health and well-being of a building's occupants. An Energy Recovery Ventilator (ERV) allows fresh air into a building, while retaining pre-conditioned heating or cooling.Let me better explain.he air-streams actually switch temperatures; the 70Â°F becomes 0ÂºF, and the 0ÂºF becomes 70Â°F. This is the core theory behind Energy Recovery AKA -- Air Exchange. An ERV operates on the basis of this air-to-air exchange theory.