Boma HVAC Study guides, Class notes & Summaries

Commercial Refrigeration Final study guide Questions with Complete Solutions The order of the four main components of the refrigeration cycle is: Compressor - condenser - metering device - evaporator. The small line on a split system air conditioning unit is the: liquid line Where is the liquid receiver located? On the high side just after the condenser The line that connects the condenser to the metering device is called the: liquid line The discharge, liquid, and suction lines of a pack...

501 HVAC Study Guide Questions and Answers 100% Solved 50 degrees centigrade equals 122 degrees F. (1.8 x C + 32F). An evaporator, generator, absorber, is a component of an absorption water chiller. A British Thermal Unit is the amount of heat required to change, one pound of water one degree Fahrenheit. A centrifugal compressor is basically a large capacity unit that handles large volumes of refrigerant. A common type of refrigerant control device used on centrifugal systems is? a hi...

HVAC FINAL EXAM WITH COMPLETE SOLUTIONS Which of the following would have the greatest effect on the heat content of the refrigerant? A) The refrigerant's humidity B) The refrigerant's state C) The refrigerant's temperature D) The refrigerant's pressure Correct Answer B) The refrigerant's state A mechanical refrigeration system cools a room by: Removing heat from the room. The four types of cooling mechanisms are: Evaporative, Thermoelectric, Absorption, Mechanical Compres...

BOMA HVAC Exam with Complete Solutions What happens when room temperature soda is poured into a glass of ice ? The ice melts because it is absorbing heat from the soda . The compressor in a refrigeration system pumps the refrigerant throughout the system To control ice build - up on a heat pump outdoor coil in the heating cycle a ______ is used . pressure differential switch The total pressure of a confined mixture of gases is the sum of the pressures of each of the gases in the mix...

HVAC Pretest BOMA (website) Questions and Answers 100% Solved Two basic categories of chillers are the ___. a. Compression cycle and absorption b. purge and absorption c. absorption and lithium bromide d. purge and lithium bromide a. Compression cycle and absorption The five requirements for comfort are proper temperature, humidity, filtration, _____, and ventilation. a. circulation b. velocity c. . d. none of the above a. circulation The primary function of an expansion device is ...

HVAC Test Questions and Answers 100% Solved The human body gives off heat by Convection, Radiation and Conduction How many BTU's are required to change five pounds of ice at 20º F to steam at 220º F 1,304 BTU/h How many BTU's must be removed from one pound of water at 200º F for it to end up as ice at 30º F? 313 BTU At Standard conditions on the Celsius scale, water will boil at 100º C The standard atmospheric pressure at sea level is 29.92 Pure water boils at a temperature o...

The 2 classification of compressors are called? Positive displacement and kinetic displacement The 3 main ways that heat transfer takes place are by _____, _____, and _____? Convection, conduction and radiation 50/50 solder is made up of equal proportions of _____. Tin and lead 50F steam heat is equal to _____. 122F. (1.08 x C + 32 = F) A 230 volt PFC compressor tries to start at 184 volts and trips on overload protection, the starting torque of the motor is _____? Decrease by lower vo...