|Could you tell us how the moisture management works?
Sure! I'm really sorry to get long-winded and technical...but since you asked...
It's all about the valve! The patent-pending ColdAvenger™’s plastic chamber mechanically mixes inhaled cold air with exhaled warm air to achieve a dynamic balance of warmth and humidity while keeping moisture away from the face. Exhaled moist air exits the main valve and at the same time water molecules are attracted to the thermoplastic material by hydrogen bonding, thus providing a source of water vapor for humidification of inhaled air. You can even turn the valve to let more or less outside air into the chamber at any time. If you're scientifically stimulated and need more, keep reading...if you're bored, please stop now because it gets even techier from here. I also invite anyone to email me directly with questions at firstname.lastname@example.org
During testing, at temperatures of - 100F to -230F water vapor inside did not freeze. Technical studies were performed on the ColdAvenger™ to confirm that the final design met the intended quality and functional goals:
• Ventilation Adequacy: The test was performed using a real-time probe measuring percent O2 and CO2 inside and outside the mask during inhalation and exhalation at the Respiratory Sciences Laboratory, University Medical Center, the University of Arizona
Health Sciences Center. CO2 and O2 values during inhalation and exhalation were similar to the normal control without the mask, indicating adequate movement of air through the mask’s valve and no accumulation of CO2. The 02 during simulated exercise varied
from 21-18% and the CO2 varied from 0.03%-3.23%, which are normal values. During both active and passive activity there was adequate oxygen and no accumulation of carbon dioxide inside the mask.
• Breathing Resistance: Ease of breathing was tested using a Dwyer Series 477 digital manometer to measure in mask pressure during simulated light, medium, and heavybreathing. Fluctuations in pressure were ± 0.5 inches of water, indicating minimal
resistance under heavy breathing to inhalation and exhalation imposed by the air chamber of the mask. The test was conducted by a Ph.D. level Certified Industrial Hygienist.
• Temperature: Digital thermometry was used during skiing, walking, and standing and demonstrated that inside mask temperatures were consistently 400F to 600F higher compared to outside. The temperature varied by activity.
• Humidity: Humidity inside the mask chamber varied between 70-80%, depending whether it was measured at the mouth or nose, with a temperature of 660F inside compared to an outside temperature of 50F and 15% relative humidity. Humidity increased during simulated exercise.
In summary, the technical studies demonstrated that the design of the ColdAvenger™ achieved a dynamic balance of thermal comfort, adequacy of ventilation, ease of breathing, moisture
control and humidification of inside the chamber.