One ton of refrigeration - Study guides, Class notes & Summaries

On low pressure chillers, moisture typically enters the refrigerant system through air leaks from areas with gaskets or fittings The maximum test pressure for leak testing a low pressure centrifugal is: 10 psig Leak test and repair the chiller to reduce refrigerant loss from a pruge unit on CFC-11 chiller ... A hydrostatic tube test kit is used to: determine if a tube leaks Commercial and industrial process refrigeration systems must be repaired when the leak rate...

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

Q-01 FDNY Exam Questions With Correct Answers Latest Updated 2023/2024 (Verified ). 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 kilowatt hours What position is the liquid line service valve normally in? - Correct Answer-Back-seated In an operating evaporator, ...

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 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...

1. 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 Answer: Lowering the condensing pressure 2. The heat removed from the refrigerant in a condenser is Answer: Sensible and Latent Heat 3. 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. Accord...

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...

BOMA-HVAC Exam Questions With Accurate Answers. laminar flow - answer- A streamline or viscous flow. - layers of water flowing over one another at different speeds with virtually no mixing between layers. - Fluid particles move in definite and observable paths or stream lines. - The flow is characteristic of viscous (thick) fluid or is one in which viscosity of the fluid plays a significant part. turbulent flow - answerIrregular movement of particles of the fluid. What do you use to det...

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...

RETA CARO Chapter 1 Exam Questions With Verified Solutions Purpose of a Refrigeration System Achieve or maintain proper temperatures in a refrigeration process used for cooling/freezing applications Ton of Refrigeration Rate BTUs transfer per unit time 288,000 BTUs/24 Hours 12,000 BTUs/12 Hours 200 BTUs/1 Minute rate of refrigeration or cooling Pressure Force per unit area. PSIA Absolute pressure; measures pressure from zero pressure PSIG Gauge pressure, uses atmo...