Air Conditioning, Refrigeration, and Heating Technology - Grand Prairie
HV209D - Diploma Program
CIP Code: 15.0501
SOC Code: 49-9021
Program ObjectiveOur collective concerns about the future health of the environment are at the heart of today’s dynamic Heating, Ventilation, and Air Conditioning Technology industry, driving progressive changes through planning and implementation. The shift away from some of the more conventional HVAC systems still used in older residences and commercial buildings has been dramatic and continues to evolve. Newer systems focus on renewable energy sources, energy efficiency, and creating comfortable indoor environments. One of the primary objectives of the HVAC curriculum is to introduce students to Green Technology concepts as they apply to HVAC systems. Students are prepared to confidently enter this vibrant field possessing fundamental skills required to service, troubleshoot, and repair commercial and residential indoor HVAC air management systems. Students also learn proper refrigerant recovery and recycling techniques, and are encouraged to complete Environmental Protection Agency (EPA) certification testing. Upon completion of this program, graduates can expect to meet the essential entry level skills and knowledge required of an HVAC technician. With additional experience graduates may pursue opportunities allowing them to work independently, without direct supervision, supervise crews or teams of other technicians, or start their own business. Graduates may also choose to specialize in one or more specific areas of the HVAC market including refrigeration, air conditioning, and heating. Students will be required to complete out-of-class assignment in each course.
Course DescriptionThis course is designed to present the learner with an understanding of the principles of energy, heat, and combustion; basic refrigeration and the effects of temperature and pressure on liquids and gasses. Procedures used in the fabrication of tubing assemblies, cutting, bending, flaring, swaging and soldering are also taught. Pressure testing and leak detection procedures are also emphasized. Students will learn to apply the basic theory of heat transfer, basic principles of energy and matter, and the application of safe work practices. They will learn to use the tools and equipment used by the HVAC-R technician and the proper selection of fasteners for particular tasks. Students will also learn the different types of tubing used in the HVAC-R industry and the types of jointing processes for different types of tubing.
Course DescriptionThis course is designed to explore the sources and principles of electrical energy and its generation and control. Conductors, insulators, thermal and magnetic switching are discussed. Types and application of electric motors are emphasized. Procedures used in wiring panels and switching devices as well as single and poly-phase electrical systems are also discussed. Students will learn how to apply safety procedures while working with electricity and electrical devices and equipment. They will learn to distinguish the difference between series and parallel circuits and how to apply principles of electricity to electrical formulas as they relate to basic circuits and equipment. Students will also learn to apply automatic controls used in the Heating, Ventilation, Air Conditioning, and Refrigeration industry. They will learn the application of various types of electric motors and controls used in the industry. In addition students will learn to diagnosis and troubleshoot electric motors and motor controls. In the process they will learn to use various types of test equipment.
Course DescriptionThis course is designed to present the student with the principles governing the operation of refrigeration systems and the refrigeration cycle. They will learn about refrigerants, compressors, evaporators, condensers, metering and control devices as well as service procedures, such as evacuating refrigerants and oil charging, leak detection and mechanical checks. Students will learn how to plot a refrigeration cycle for refrigerants on a pressure/enthalpy diagram, choose a leak detector for a particular type of leak, perform two different types of evacuation, and perform a high side and triple evacuation. They will learn to charge a system using various methods. Students will also learn to diagnose and troubleshoot various problems within the refrigeration system.
Course DescriptionThis course is designed to provide the student with the necessary information about the various types of air conditioning systems, their characteristics and applications as well as combination systems. This course also explores the various components e.g.: compressors, motors, controls, and air handlers as well as servicing and troubleshooting of systems and controls. Students will learn the parameters associated with psychometrics, how refrigeration applies to air conditioning, the process involved in installing an air conditioning system, the various types of controls used on air conditioning equipment, the conditions that affect air conditioning equipment and the proper troubleshooting and servicing techniques for air conditioning units. Students will also learn to recognize the four factors involved in comfort and plot air conditions using a psychometric chart. They will learn to select the correct instruments for checking an air conditioning unit with a mechanical problem. Students will also learn to calculate the correct operating suction pressures for both standard and high efficiency air conditioning equipment under various conditions.
Course DescriptionThis course is designed to provide the student with the necessary information about theory of heat exchange as applied to heat and cooling loads as well as the calculation of those loads. A duct project is completed and tested during this course. Students will learn the sources of indoor air pollution, the procedures for eliminating contamination sources, how molds reproduce, reasons for cleaning air ducts, reasons for providing humidification in winter months, and factors used when sizing humidifiers. Students will also learn to determine factors for evaporation requirements, plot airflow conditions on the air-friction chart, determine requirements for filtration systems, perform service inspections on humidifier units, perform load calculations, plot wet-bulb and dry-bulb temperatures, and calculate winter heat loss.
Course DescriptionThis course is designed to provide the student with necessary information about the theory and application of control for commercial refrigeration. Electro-mechanical or electronic controls include low pressure; high pressure; ambient head pressure; oil pressure; current and thermal overload; temperature; flow, freeze and short cycle control are emphasized. Circuits for pump down; off cycle, electric and hot gas defrost are wired. Evaporation pressure, head pressure, crankcase pressure, and metering valves are studied. Students will learn how commercial evaporators are controlled, the various types of controls used in a commercial system, and the different applications of refrigeration control systems for commercial uses. Students will also learn to identify and select the various types of expansion devices used in commercial systems; apply refrigeration control systems for commercial uses, and the service and troubleshooting of commercial refrigeration control systems.
Course DescriptionThis course is designed to provide the student with information about the description and selection of commercial refrigeration components and system design. Topics include compressors, capacity controls, system accessories, oil separators, and control systems, heat exchangers, and refrigerant piping. A walk-in box with related system components is designed. In addition students are also provided with information about various types of commercial ice making machines, their design, service and maintenance. Practical shop projects include operation, maintenance and troubleshooting commercial ice machines and other refrigeration systems. Students will learn the role that the condenser and compressor play in the refrigeration process. They will also learn to work with the various types of controls used in the commercial system, correctly apply different applications of refrigeration systems for commercial uses, and the proper servicing and troubleshooting techniques associated with commercial systems. Students will also learn how to read and interpret ice production and performance charts for ice machines. They will learn the process of cleaning and sanitizing an ice machine as well as water filtration and treatment.
Course DescriptionThis course is designed to provide the student with the necessary information about service and repair of electric and gas warm air heating units. Combustion theory, efficiency testing, combustion air and vent design, heat exchanger types, blower motors, fans and control systems including thermostats are covered. The student will learn how to identify the various types of automatic control components used and their applications. Students will learn how to perform basic tests in troubleshooting electrical problems in an electric forced-air furnace. Students will learn how to troubleshoot and service various electric and gas heat systems.
Course DescriptionThis course introduces HVAC students to Green Technology and its impact on the HVAC industry. They will be provided with an overview about green alternatives to comfort heating and cooling systems. Specific additional topics include learning methods for evaluating energy efficiency in any building structure and Solar Thermal and Geothermal Green Technologies. Students learn the fundamentals of Energy Auditing and the methods for conducting a mechanical and envelope evaluation, pressure analysis, and performing infrared imaging (Thermography). Students are encouraged to complete certification testing conducted either by GreenMech (Green Mechanical Council), BPI (Building Performance Institute) or RESNET (Residential Energy Services Network). Students also learn the fundamentals of Solar Thermal and Geothermal energy systems. They learn the basic theory about each system and the functional components of each system. They learn to calculate to proper sizing for these systems and use trainers/simulators to visually reinforce concepts learned in the classroom.