Maricopa Community Colleges  HVA110LL   19916-19982 
Official Course Description: MCCCD Approval: 04/23/91
HVA110LL 19916-19982 LAB 1 Credit(s) 3 Period(s)
Principles of Air Conditioning Lab
Application of routine procedures including identification of air conditioning components. Measurements and calculations of pressure and air velocity in ducts. Evaluation of energy balance. Identification of electrical malfunctions. Safety stressed. Prerequisites: HVA105 or permission of department. Corequisites: HVA110 or permission of department.
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MCCCD Official Course Competencies:
 
HVA110LL   19916-19982 Principles of Air Conditioning Lab
1. Locate components of specific air conditioning systems and explain their function. (I)
2. Select appropriate equipment and measure static pressure, velocity pressure, total pressure in specific ducts and calculate air velocity and Cubic Feet per Minute (CFM). (II)
3. Evaluate air conditioners and/or heat pumps for energy balance. (III)
4. Predict operating conditions for air conditioning units and heat pumps operating ouside of design operating conditions. (IV)
5. Select appropriate electrical testing equipment, apply appropriate safety measures and diagnose electrical problems including fuses, relay coils, broken/missing wires. (V)
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MCCCD Official Course Outline:
 
HVA110LL   19916-19982 Principles of Air Conditioning Lab
    I. Components Location/Function
        A. Compressor
        B. Condenser
        C. Metering device
        D. Evaporator
        E. Supply duct
        F. Return duct
        G. Balancing dampers
        H. Supply diffusers
        I. Return grills
      II. Measuring and Calculating Air Flow
          A. Types of air measuring meters
            1. velometer
            2. incline manometer
            3. magnehlic
            4. other
          B. Pressure
            1. velocity
            2. static
            3. total
          C. Calculate
            1. velocity
            2. cubic feet per minute (CFM)
        III. Energy Balance
            A. Evaporator
              1. CFM
              2. difference in temperature
              3. calculate British Thermal Unit (BTU) absorbed
            B. Compressor energy
              1. voltage
              2. current
              3. power factor
              4. electrical energy to British Thermal Unit (BTU)
            C. Condenser
              1. CFM
              2. difference in temperature (DT)
              3. calculate BTU
              4. energy
          IV. Operating Conditions Outside Design Conditions
              A. High indoor humidity
              B. High indoor temperature
              C. High indoor temperature and humidity
              D. Low indoor temperature
              E. High outdoor temperature
              F. Low outdoor temperature
            V. Electrical Problems
                A. Open fuses
                B. Broken/missing wires
                C. Defective coils
                D. Defective contacts
                E. Other
                F. Safety
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