One ton of refrigeration Study guides, Class notes & Summaries

A ton of refrigeration or air conditioning capacity is equal to: - c. 12000 british thermal units in one hour If 14.7 lbs is the absolute pressure, what is the gauge pressure? - b. 0 PSIG R-12 boils at what temperature? - c. -21.7 Fahrenheit Suction lines are usually sized for: - c. 2 degrees temperature change A refrigerant gauge and testing manifold has: - d. 2 gauges, 2 valves, and 3 ports A fan motor runs at 1800 RPM under load. It has a 3 inch pulley and drives a fan equipped with a 9...

The Celsius scale is based on boiling water having a temperature at sea level of_? - 100° Subcooling occurs_. - After all vapor has changed to liquid When the temperature of a vapor is higher than its boiling point, the vapor is_? - Superheated When heat is carried from one object to another by means of a moving liquid or gas, it is being transferred by_? - Convection A ton of refrigeration is equal to_? - 12,000 BTUs per hour

The efficiency of the refrigerant cycle is affected by the operation of the condenser. of the following. a more efficient centrifugal compressor operation results from: Lowering the condensing pressure The heat removed from the refrigerant in a condenser is: Sensible and latent heat The refrigerant unit that you have been assigned to is being taken out of service for a major repair. you have been assigned to withdraw refrigerant for storage in suitable containers. according to th...

HVAC Exam Questions With Verified Solutions. Heat Transfer - answerMoves from one substance to another as well as between molecules of a substance, temperature is the driving force Temperature - answerThe level of heat or heat intensity, measured with thermometers Heat - answerIs the motion of molecules, and travels from a warm substance to a cold substance Conduction - answerEnergy travelling from one molecule to another, involves direct contact Radiation - answerPasses through air and ...

Q-01 FDNY Exam Questions With Correct Answers Latest 2023/2024 (Graded) Rupture members, when used in parallel with a relief valve, are not to exceed _____% above designed working pressure - Correct Answer-20% Butterfly valve: where can it be used? - Correct Answer-Can be used on the inlet and outlet of a water pump What electrical motor protection device automatically resets itself? - Correct AnswerThe thermal protector 746 watts equals how many kilowatt hours? - Correct Answer-.746 kilowa...

The efficiency of the refrigerant cycle is affected by the operation of the condenser. of the following. a more efficient centrifugal compressor operation results from: Lowering the condensing pressure The heat removed from the refrigerant in a condenser is: Sensible and latent heat The refrigerant unit that you have been assigned to is being taken out of service for a major repair. you have been assigned to withdraw refrigerant for storage in suitable containers. according to th...

Efficiency of the refrigerant cycle is affected by the operations of the condenser. Of the following, a more efficient centrifugal compressor operation results from: Lowering the condensing pressure The heat removed from the refrigerant in a condenser is: Sensible and latent heat The refrigerant unit that you have been assigned to is being taken out of service for a major repair. You have been assigned to withdraw refrigerant for storage in suitable containers. According to the N...

RETA EXAM QUESTIONS AND ANSWERS (GRADED A) RETA EXAM QUESTIONS AND ANSWERS (GRADED A) RETA EXAM QUESTIONS AND ANSWERS (GRADED A) RETA EXAM QUESTIONS AND ANSWERS (GRADED A) How are temperature and heat related? - ANSWER-Temperature is a measure of the intensity of the heat in an object The amount of heat required to change the temperature of one pound of water one-degree Farenheit defines - ANSWER-a BTU What is one ton of refrigeration equal to? - ANSWER-The rate of moving 288,0...

A common rating that's used to specify the capacity of refrigeration equipment is the _______, which is equal to 12,000 BTU per hour - Ton A gas has a weight of 5 pounds and a volume of 100 cubic feet. What is the specific volume of this gas? - 20 A gauge pressure of 30 psig is equivalent to an absolute pressure of - 44.7 According to Charles's law, if the temperature of a gas is increased, then the - volume would increase An electric motor that's rated at 5 horsepower can produce ____...

RETA CARO QUESTIONS AND ANSWERS ALREADY PASSED Which refrigerant has the highest mass flow requirement at the same evaporator and condensing temperature? CFC-12 which refrigerant is the first to be phased out by Montreal Protocol CFC-12 As the ratio between the evaporator and condensing pressure increases the theoretical discharge temperature increases Under the Montreal Protocol as long as a technician does not perform work on the refrigerant containing portions of a system they do not need...