HVAC Final Exam Complete Questions & Answers!

Air Conditioning - ANSWER A process that involves heating, cooling, humidifying, dehumidifying, and cleaning air. Boiler - ANSWER Consists of a vessel or tank like container where heat is produced from the combustion fuels such as natural gas, fuel oil, coal, or electric resistance heating used to produce hot water or steam. Condenser - ANSWER Refrigeration cycle component rejects heat into the atmosphere Evaporator - ANSWER Refrigeration cycle component picks up heat in the refrigeration cycle. Latent Heat - ANSWER Kind of heat that causes a change in state of a substance, but not a change in temperature Sensible Heat - ANSWER Kind of heat causes a change in temperature of a substance, but not a change in state Hot to Cold - ANSWER In which direction does heat flow? Infiltration, Transmission, Ventilation - ANSWER Heat losses from buildings fall into 3 categories. what are they? IAQ - ANSWER Indoor Air Quality Windows and Glass - ANSWER What are glazings ETS - ANSWER Environmental Tabacco Smoke ASHRAE 55 - ANSWER Which ASHRAE standard applies to comfort Conditions ASHRAE 62 - ANSWER Which ASHRAE Standard applies to ventilation rates and indoor air quality. Conduction, Convection, Radiation - ANSWER What are the forms of heat transfer? Thermal Bridge - ANSWER What is the term used when describing how heat transfers through the exterior stud and supports faster than transferring through the insulation within the walls? Absolute Humidity - ANSWER The weight of water vapor in a given amount of air space, measured in grains per cubic foot. Absolute Pressure - ANSWER Gauge pressure plus atmospheric pressure. ACCA - ANSWER Air Conditioning Contractors of America Accurator - ANSWER A piston type metering device that feeds the proper amount of liquid refrigerant into the evaporator