Refrigeration and Air Conditioning

RAC 100 Heating and Cooling Career Exploration (.5-10) 1 hr.
Studies career and employment possibilities in the heating and cooling industry. Includes observation or practices in heating and cooling and attendance at a seminar to discuss related experiences. For Tech Prep students with no prior courses or work experience in the heating and cooling field. (NOTE: Summer semester only.)
Prerequisite:
Consent of coordinator.

RAC 101 Refrigeration Fundamentals (3-3) 4 hrs.
Introduces vocabulary, concepts and scientific principles used in the refrigeration industry. Develops skills in pipe fitting, use of hand tools and operation of instruments used in the refrigeration trade.

RAC 102 Refrigeration Systems (3-3) 4 hrs.
Continues to develop principles and concepts learned in RAC 101. Familiarizes students with components and accessories added to basic refrigeration systems for special applications. Develops trouble diagnosing procedures.
Prerequisite:
RAC 101 with a grade of "C" or better.

RAC 103 Heating Principles (3-3) 4 hrs.
Describes sources and methods of producing heat for residential, commercial and industrial systems. Develops skills in testing, adjusting and replacing heating system components.

RAC 104 Residential Comfort Systems (3-3) 4 hrs.
Integrates concepts, principles and knowledge of equipment available for residential comfort systems including solar heat. Describes several residential systems and places emphasis on diagnosing system malfunctions. Prerequisites: RAC 101 and RAC 103 with grades of "C" or better.

RAC 105 Heating and Cooling Controls (3-3) 4 hrs.
Describes the purposes and principles of operation and causes of failure in electrical components common to residential and small commercial systems. Emphasizes wiring schematics and diagrams.

RAC 106 Advanced Controls (3-3) 4 hrs.
Continues RAC 105. Includes electrical components. Emphasizes control systems, system malfunctions and proper repair procedures.

RAC 108 Domestic Refrigeration Appliances (3-3) 4 hrs.
Provides a comprehensive examination of the operation, problem solving and repair of residential refrigeration appliances.
Prerequisite:
RAC 101 and RAC 105 with grades of "C" or better.

RAC 200 Heating and Cooling Internship (1-15) 2 hrs.
Applies appropriate skills to the heating and cooling technology field. (NOTE: Summer semester only.)
Prerequisite:
RAC 100 with a grade of "C" or better and consent of coordinator.

RAC 201 Refrigeration System Design I (3-3) 4 hrs.
Considers the factors in the selection of refrigeration compressors, evaporators, condensers and compressor oil, as well as the accessories used in commercial refrigeration. Examines the thermo-dynamic properties of the common refrigerants.
Prerequisite:
RAC 102 with a grade of "C" or better or consent of instructor.

RAC 202 Refrigeration System Design II (3-3) 4 hrs.
Continues consideration of factors in the selection of metering devices, pipe sizing, motors and controls. Develops concepts of lubrication, multi-staging and cascade freezer systems.
Prerequisite:
RAC 201 with a grade of "C" or better or consent of instructor.

RAC 203 Air Conditioning Principles (3-3) 4 hrs.
Examines the properties of air through the use of the psychometric chart and tables. Studies methods of computing heat gains and losses for residential and light commercial systems.
Prerequisite:
RAC 104 with a grade of "C" or better or consent of instructor.

RAC 204 Air Distribution (2-3) 3 hrs.
Considers the factors in the selection of a duct system for efficient air distribution. Studies fan laws and pressure drops for proper fan and duct size selection. Describes types of registers and their location for optimum performance.
Prerequisite:
RAC 104 with a grade of "C" or better or consent of instructor.

RAC 208 Industrial Controls (3-0) 3 hrs.
Describes the controls found in industrial HVAC and refrigeration systems. Emphasizes energy efficient systems.
Prerequisite:
RAC 106 with a grade of "C" or better or consent of instructor.

RAC 211 Residential Solar Heating (3-0) 3 hrs.
Examines the nature of solar radiation and collections of solar energy. Studies existing systems for heating and cooling residential space and water.
Prerequisite:
RAC 101 with a grade of "C" or better or consent of program coordinator.

RAC 290 Independent Study (3-0) 3 hrs.
For students with some experience who do not wish to duplicate their present knowledge, or who cannot attend classes regularly. Study plan to be worked out by instructor and student.