Maricopa Community Colleges  FAC111LL   19986-19995 
Official Course Description:   MCCCD Approval:  04/28/98  
FAC111LL     19986-19995 LAB 1 Credit(s) 3 Period(s)
Air Conditioning Principles and Systems Lab
Routine procedures on operational unitary air conditioning, heat pump and-Air and Water Systems. Components and function of large chillers, cooling towers, hot water boilers, associated piping, pumps and constant volume and variable air volume (VAV) air handlers. Perform measurements and calculations of pressure and air velocity in ducts. Principles of psychometrics and the pressure enthalpy diagram. Evaluation of the energy balance of components and systems. Personal and equipment safety. Prerequisites: HVA101 or permission of department. Corequisites: HVA111 or permission of department.
Cross-References:   HVA111LL
 
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MCCCD Official Course Competencies:
 
FAC111LL   19986-19995 Air Conditioning Principles and Systems Lab
1. Locate and explain the function of components of specific unitary (all air) air-conditioning systems. (I )
2. Locate and explain the function of components of specific air and water air-conditioning systems. (II)
3. Locate and explain the the function of components of a hot water boiler system . (II)
4. Perform "Rounds and Readings" on operating air and water systems including chilled water (CW), boiler, chiller and air handlers. (III)
5. Measure static pressure, velocity pressure, and total pressure in specific ducts. (IV)
6. Calculate air velocity and cubic feet per minute (CFM) in specific ducts. (IV)
7. Evaluate air conditioners and heat pumps systems for energy balance using the principles of psychrometrics. (V)
8. Trace and calculate the thermodynamics of an air and water system from the heat source through a building's air and water systems. (VI)
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MCCCD Official Course Outline:
 
FAC111LL   19986-19995 Air Conditioning Principles and Systems Lab
    I. Components and Function of Unitary Systems
        A. Compressor
        B. Condenser
        C. Metering device
        D. Evaporator
        E. Supply duct
        F. Return duct
        G. Balancing dampers
        H. Supply diffuser
        I. Return grills
      II. Components and Function of Air and Water Systems
          A. Chillers ( reciprocation and centrifugal)
            1. compressor
            2. methods of unloading
            3. exchanger / condenser
            4. exchanger / evaporator
            5. metering device
            6. cw (chilled water) supply connection
            7. cw return connection
            8. condenser water supply connection
            9. condenser water return connections
            10. expansion tank
            11. controls
          B. Pumps / condenser
          C. Pump / chilled water
          D. Two in one valve
          E. Balancing valves
          F. Cooling tower
            1. fan
            2. water distributor
            3. fill (media)
            4. water make up
          G. Chilled water supply and return
          H. Air Handler
            1. chilled water coil
            2. hot water coil
            3. pre-heat coil
            4. humidification system
            5. blower
            6. return air system
            7. supply air system
          I. Boiler
            1. fuel
            2. heat exchanger
            3. burner and controls
            4. pump
            5. supply and return system
            6. expansion tank
          J. Terminal Units
            1. variable air volume (VAV)
            2. VAV with reheat
            3. Induction VAV
            4. Fan coil
        III. Rounds and Readings for Air and Water Systems
            A. Chiller refrigerant pressures
            B. CW supply and return temperatures
            C. Hot water supply and return temperatures
            D. Air Handler supply and return temperatures
            E. Air Handler mixed air percentage (using the "Psychrometric Chart")
            F. Humidification (using the "Psychrometric Chart")
            G. Filter static pressure drop
          IV. 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)
            V. Energy Balance for Unitary Equipment
                A. Evaporator
                  1. cfm
                  2. difference in enthalpy (using the "Psychrometric Chart")
                  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
              VI. Energy Balance for Air and Water Equipment
                  A. Evaporator (chiller)
                    1. gpm (gallon per minute flow)
                    2. difference in temperature (TD)
                    3. calculate BTU
                  B. Air handlers (air to coil)
                    1. enthalpy difference (using the psychrometric chart)
                    2. calculate BTU
                  C. Air Handlers (coil to water)
                    1. gpm (gallon per minute flow)
                    2. difference in cw temperature (DT)
                    3. calculate BTU
                  D. CW (chilled Water) supply and return
                    1. gpm (gallon per minute flow)
                    2. difference in temperature (DT)
                    3. calculate BTU
                  E. Transfer through the vapor compression cycle (chiller)
                    1. cw gpm (gallon per minute) flow
                    2. difference in temperature (DT)
                    3. calculate BTU
                  F. Water condenser
                    1. gpm (gallon per minute flow)
                    2. difference in temperature (DT)
                    3. calculate BTU
                  G. Cooling tower (water side)
                    1. gpm (gallon per minute flow)
                    2. difference in temperature (DT)
                    3. calculate BTU
                  H. Cooling tower (air side)
                    1. cfm (cubic ft. per minute)
                    2. difference in enthalpy (using the psychrometric chart)
                    3. calculate BTU
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