Refrigeration stuvia 2024 - Study guides, Class notes & Summaries

Safety Preface Study Questions - ANSWER- What is the purpose of an SOP? A. To break down the amount of work to be done in a given time. B. To read after the job is done. C. To provide guidance and specific steps necessary to safely operate the system. D. To provide a standard way to perform the job faster. - ANSWER-C. To provide guidance and specific steps necessary to safely operate the system. Where can a list of the proper PPE needed to safely perform a job task be found? A. SO...

Which of the following factors listed below does not affect heat transfer? (pg. 1-2) A) Temperature Difference B) Surface Area C) Thermal Conductivity D) Density - ANSWER-D) Density An example of a poor conductor of heat is? (pg. 1-3) A) Aluminum Tubing B) Schedule 40 Steel Pipe C) Wood D) Water - ANSWER-C) Wood Thermal conductivity ('K') is? (pg. 1-3) A) Exactly the same for any metal B) The number of BTU's that will pass in 1 hour through a material 1" thick with an area o...

Convection is the transfer of ____ - ANSWER-heat through a material or substance Radiation is the ____ - ANSWER-projection of heat like the heat radiated by the sun or by an open flame T or F: Heat is always on the move, traveling only in one direction and always from hot to cold - ANSWER-false What are two methods of heat transfer? - ANSWER-conduction and convection What are two basic forms of refrigeration systems? - ANSWER-direct expansion and gravity flooded T or F: Conduction...

Specific Heat is - ANSWER-the amount of heat neccessary to raise the temperature of a substance one deg F What are two types of heat - ANSWER-sensible and latent Heat flow by conduction is - ANSWER-energy travelling from one molecule to another Radiation can be defined as - ANSWER-transfer of heat through the air without heating the air and is absorbed by a solid object Water freezes at - ANSWER-32 deg f Refrigeration is - ANSWER-the tranfer of heat from a place where it is not wa...

what is the purpose of a refrigeration system? - ANSWER-to maintain the temperature operators must keep refrigeration systems operating safely and efficiently. Which of the following best describes the area of required knowledge for this to be possible? - ANSWER-basic physical principles, interpretation of information from temperature and pressure gauges, basic operating principles. mechanical Refrigeration is a series of steps that - ANSWER-moves heat energy from a space or object to an a...

what is the purpose of the refrigeration compressor? - ANSWER-to draw Vapor away from the evaporator at the same rate it is being generated in to raise the pressure of that Vapor to a point where it can be condensed. how does the refrigeration compressor maintain the temperature in the system evaporators? - ANSWER-drawing out vaporized refrigerant at the rate to maintain the desired evaporating pressure. discharge paper from all compressors - ANSWER-will contain some level of superheat

As defined in chapter 1 of this text the primary purpose of refrigeration system is - ANSWER-To maintain a temperature Operators must keep refrigeration systems operating safely and efficiently. Which of the following best describes the areas of required knowledge for this to be possible. - ANSWER-Basic physical principles, Interpreparation of information from temperature and pressure gauges. Basic operating principles. Mechanical refrigeration is a series of steps that - ANSWER-moves heat...