HIBBING COMMUNITY COLLEGE
COURSE OUTLINE
COURSE TITLE & NUMBER: Refrigeration Theory: HCT 1505
CREDITS: 3 (2 Lec / 1 Lab)
PREREQUISITES: None
CATALOG DESCRIPTION:
In refrigeration theory the student will study the theory of refrigeration involving temperature/pressure relationship, heat transfer, sensible and latent heat, and laws of refrigeration. Students will study the mechanical refrigeration cycle, including compressors, metering devices, evaporators and condensers. Students will demonstrate and become proficient in the use of specialty hand tools and power equipment used to service, install and maintain refrigeration equipment.
OUTLINE OF MAJOR CONTENT AREAS:
I. Safety
II. Definitions
III. Temperature/Pressure relationship
IV. Component Identification & Function
V. Basic refrigeration circuit
VI. Metering Devices
VII. Tools
A. Identification
B. Function
C. Maintenance
D. Application
VIII. Refrigeration circuit
A. Tube fabrication swag/flare
B. Brazing
C. Evacuation methods
D. Charging methods
E. Construction of refrigeration system
COURSE GOALS/OBJECTIVES/OUTCOMES:
Students will:
1. identify and demonstrate good safety practices.
2. define phosgene gas.
3. define refrigeration.
4. define temperature.
5. define a BTU.
6. define Specific Heat of a substance.
7. discuss Latent Heat.
8. discuss the term change of state.
9. define Superheat.
10. define Latent Heat of Vaporization.
11. define saturation temperature.
12. list three methods of heat transfer.
13. explain how heat transfers by conduction.
14. explain how heat transfers by convection.
15. explain how heat transfers by radiation.
16. explain how heat transfers is affected by temperature.
17. discuss the origin of the term “Ton of Refrigeration”.
18. describe how the term “Ton of Refrigeration” applies to the sizing of equipment.
19. define a Refrigerant.
20. define P.S.I.G.
21. define P.S.I.A.
22. demonstrate the conversion between P.S.I.G & P.S.I.A.
23. explain the effects of pressure on a boiling liquid.
24. list the sex components needed for a closed refrigeration system.
25. draw and identify the components for mechanical refrigeration system.
26. list the three most common types of compressors used in refrigeration equipment.
27. list the different types of condensers.
28. describe the function of a condenser.
29. describe the purpose of a filter drier.
30. state the purpose of a metering device.
31. describe how a capillary tube meters refrigerant.
32. describe the function of the evaporator.
33. describe how a micron gauge is used to determine proper vacuum level.
34. describe the purpose of a vacuum pump.
35. identify the differences between ACR copper and copper used for plumbing/heating.
36. demonstrate charging a refrigeration system using the “sweep charge method”.
37. demonstrate the proper usage of a graduated cylinder.
38. demonstrate how to charge a system using scale.
39. demonstrate how to charge a system using the frost line method.
40. demonstrate the ability to make a leak free flare point.
41. identify the correct solder for making copper to copper joint.
42. identify the correct solder and flux for making a copper to steal joint.
43. demonstrate the proper procedures for bending copper with a lever bender.
44. demonstrate the ability to make a leak free braze joint.
45. demonstrate how to make a swaged joint.
46. define a compound gauge.
47. identify a variety of fasteners used in the HVAC/R trade.
48. identify different types of torches used in HVAC/R industry.
49. identify the correct temperature and pressure using a pressure/temperature chart.
50. demonstrate the correct procedure for setting up a torch.
51. demonstrate the correct procedure for shutting down a torch.
52. demonstrate the proper procedure for finding a leak.
53. demonstrate refrigerant recovery using passive recovery method.
54. demonstrate refrigerant recovery using active recovery
MNTC COMPETENCIES MET: N/A
HCC COMPETENCIES MET:
Working Productively and Cooperatively
Thinking Creatively and Critically
STUDENT CONTRIBUTIONS:
The student is expected to attend all lectures and working sessions, participate in activities and discussion, listen to and follow direction, complete assignments on time and request assistance when needed. Each student is expected to spend the necessary time to become adept at the procedures and their applications. At all times the student is expected to demonstrate and exercise safety skills and procedures.
STUDENT ASSESSMENT SHALL TAKE PLACE USING INSTRUMENTS SECLECTED/DEVELOPED BY THE COURSE INSTRUCTOR.
HCT1505 3
Hibbing Community College, a technical & community college, is
an equal opportunity educator & employer
SPECIAL INFORMATION: (SPECIAL FEES, DIRECTIVES ON HAZARDOUS MATERIALS, ETC.)
HCT1505:so
032013
HCT1505 3
Hibbing Community College, a technical & community college, is
an equal opportunity educator & employer