MAT 1040 - Refrigeration Fundamentals

• Define temperature.
• Make conversions between the Fahrenheit and Celsius scales.
• Describe molecular motion at absolute zero.
• Define the British thermal unit.
• Describe heat flow between substances of different temperatures.
• Explain the transfer of heat by conduction, convection, and radiation.
• Discuss sensible heat, latent heat, and specific heat.
• State atmospheric pressure at sea level and explain why it varies at different elevations.
• Explain psig and psia as they apply to pressure measurements.
• List the three states in which matter is commonly found.
• Define density.
• Discuss Boyle’s law.
• State Charles’ law.
• Discuss Dalton’s law as it relates to the pressure of different gases.
• Define specific gravity and specific volume.
• Define horsepower.
• Convert horsepower to watts.
• Convert watt-hours to British thermal units.
• Discuss applications for high-, medium-, and low-temperature refrigeration.
• Describe the term ton of refrigeration.
• Describe the basic refrigeration cycle.
• Explain the relationship between pressure and the boiling point of water or other liquids.
• Describe the function of the evaporator or cooling coil.
• Explain the purpose of the compressor.
• List the compressors normally used in residential and light commercial buildings.
• Discuss the function of the condensing coil.
• State the purpose of the metering device.
• List four characteristics to consider when choosing a refrigerant for a system.
• List the designated colors for refrigerant cylinders for various types of refrigerants.
• Discuss different refrigerants and their applications.
• Describe how refrigerants can be stored or processed while refrigeration systems are being serviced.
• Properly leak test a refrigeration system
• Properly evacuate and recharge a refrigeration system