Released: 1/28/13. [Back to COED Friends News] Visitation Catholic Elementary School, in Elmhurst, Illinois, is actively seeking its next great Principal. Visitation is blessed with an outstanding faculty and staff of 30 professionals educating 500 students from preschool through eighth grade.
These are installed throughout a building to move air in or out of a room. Heating, ventilation and air conditioning (HVAC) is the technology of indoor and vehicular environmental comfort. Its goal is to provide thermal comfort and acceptable indoor air quality. HVAC system design is a subdiscipline of mechanical engineering, based on the principles of thermodynamics, fluid mechanics, and heat transfer.
By providing a climate controlled environment, refrigeration systems make it possible to store and transport food, medicine, and other perishable items. Although trained to do all three, HVAC technicians sometimes work strictly with heating, air conditioning, or refrigeration systems. They also may specialize in certain types of HVAC equipment, such as water-based heating systems, solar panels, or commercial refrigeration.