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Oct 03, 2024
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HCR 307 - Fundamentals of Refrigeration Credits: 5 Lecture Hours: 2 Lab Hours: 6 Practicum Hours: 0 Work Experience: 0 Course Type: Voc/Tech This course covers the principles of refrigeration, domestic systems and equipment. Competencies
- Explain the principles of the refrigeration system
- Define what makes a good refrigerant
- Define the function of the four basic components of the refrigerant system
- Explain safety procedures in working with refrigeration systems
- Demonstrate those procedures
- Explain the relationship between gage pressure, absolute pressure and a vacuum
- Define gage pressure
- Define absolute pressure
- Define a vacuum
- Outline the relationship between gage pressure, absolute pressure and vacuum
- Identify the relationship between temperature, pressure, heat, and enthalpy
- Explain temperature
- Explain pressure
- Define heat
- Define enthalpy
- Define sensible and latent heat
- Distinguish between sensible and latent heat
- Determine the proper operating temperatures and pressures of a refrigeration system
- Successfully pass the EPA requirement test for Universal Certification
- Explain the correlation between outdoor ambient temperatures and condensing temperature
- Explain the correlation between the indoor or box temperature and evaporator temperature
- Demonstrate the ability to set the superheat of the thermostatic expansion valve
- Use an electronic thermometer
- Read a Temperature/Pressure Chart
- Read a pressure gage
- Install refrigerant gage-manifold assembly properly, using a service valve wrench
- Remove refrigerant gage-manifold assembly properly, using a quick disconnect coupler
- Demonstrate the proper methods to charge a system
- Demonstrate the ability to leak check a refrigeration unit, using
- Demonstrate the correct methods to braze and solder copper tubing
- Clean tubing and fittings
- Operate the torch set safely
- Identify mechanical and electrical malfunctions in a refrigeration system
- Solve problems with electrical test instruments
- Describe the failure or problem given a condition
- Correct the malfunction
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