HVAC BOMA 501 Study Guide Latest Update Graded A+

HVAC BOMA 501 Study Guide Latest Update Graded A+ Dual Duct System A system in which hot air and cold air are supplied by separate ducts and mixed at each controlled space to provide the desired supply air temperature. This method consumes a great deal of energy. Muiltizone System an a/c system in which the zone control is obtained by mixing hot and cold air at the unit in response to a room thermostat Load Calulations take the sensible heat and the latent heat into consideration which of the following does not provide sensible heat gain? Heat from cooking or hot baths (latent heat has to do with moisture) Which of the following is the way that solar radiation disperses in a building? Transmitted directly to the interior of the building, absorbs by glass, reflected into the building outside air may get into the air conditioning spaces by... infiltration through the walls, infiltration through the swinging doors, air induced by replaced exhaust In commercial buildings heat generated by lights does not seriously affect the control of the heating system false the human body's feeling of well being depends upon.... The body's metabolism which of the following natural laws has the greatest bearing on the science of air conditioning? Boyles' Law, Charles' Law, Dalton's Law Why is a pitch pocket commonly used? To protect the piping and seal the roof from refrigeration lines passing through it Which of the following is an evaporative type condenser and what governs its cooling? a cooling tower governed by web bulb temperature on an evaporative condenser what is the purpose of the eliminator to separate the moisture carry over specific heat of a substance the amount of heat necessary to raise the temperature of one pound of a substance one degree Fahrenheit Latent Heat the amount of heat necessary to change a liquid to a vapor with no change in temperature The difference between a pump, a fan and a compressor is.... pumps pump liquid, fans and compressors pump air Which of the following checks should be made of a blower-drive? Check the blower belts for cracks and wear, check the motor bearings for wear, check the blower bearings for wear Which of the following is a good rule to follow when checking air filters? air filters should be of the size and type recommended by the equipment manufacturer When one of the three phases of a motor fails, how will the motor react? A winding will run hotter, the motor will (generally) not start, the two