unperson. n. 1. a person whose existence is officially denied or ignored. (ËÊnËpÉr sÉn). n.nperson. n. 1. a person whose existence is officially denied or ignored. (ËÊnËpÉr sÉn). n.
HVAC Testing, Adjusting and Balancing are the three major steps used to achieve proper operation of HVAC systems. TAB usually refers to commercial building construction and the specialized contractors who employ personnel that perform this service. In general, the TAB specialist performs air and hydronic measurements on the HVAC systems and adjusts the flows as required to achieve optimum performance of the building environmental equipment. The balancing is usually based upon the design flow val
For other uses of the acronym WAAS, see WAAS (disambiguation). The Wide Area Augmentation System (WAAS) is an air navigation aid developed by the Federal Aviation Administration to augment the Global Positioning System (GPS), with the goal of improving its accuracy, integrity, and availability.