Per Scholas programs. Per Scholas brings more than 20 years of experience in recovering, handling and processing retired IT equipment. Per Scholas was featured in WIRED magazine in November 2014. Four Per Scholas graduates were featured in the New York Times in the winter of 2014. In 2012, Per Scholas was named one of America's top-performing nonprofit organizations by the Social Impact Exchange S&100 Index for its impressive outcomes and results-driven work. Per Scholas received a Heroes Award from the Robin Hood Foundation in 2011. The Per Scholas board of directors includes several prominent professionals in the IT field. Current Chairman Lewis
Air changes per hour the airflow efficiency of the enclosure and the methods used to ventilate it. The actual amount of air changed in a well mixed ventilation scenario will be 63.2% after 1 hour and 1 ACH. In order to achieve equilibrium pressure, the amount of air leaving the space and entering the space must be the same. formula_1 Where: Ventilation rates are often expressed as a volume rate per person (CFM per person, L/s per person). The conversion between air changes per hour and ventilation rate per person is as follows: formula_2 Where: Air change rates are often used as rules of