Maricopa Community Colleges  WRT205   19986-20086 
Official Course Description: MCCCD Approval: 07/22/08
WRT205 19986-20086 LEC 3 Credit(s) 3 Period(s)
FUNDAMENTALS OF HYDRONICS
Properties of water and pressure distribution in hydronic systems. Flow in pipes, pressure drop/head loss, pumps in hydronic systems and pressurization of closed hydronic systems. Pressurization of open systems and pressure boosting. Heat storage, terminal users (units), automatic controls, distribution systems, expansion and pressurization equipment. Chilled water systems, low and high temperature water systems.
Prerequisites: None.
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MCCCD Official Course Competencies:
 
WRT205   19986-20086 FUNDAMENTALS OF HYDRONICS
1. List and identify terminology and abbreviations in describing temperature ranges in heating and cooling systems. (I)
2. Convert between the United States customary system (USCS) and the International Systems (SI) of units measurement. (II)
3. Describe and calculate the properties of water for specific conditions. (III)
4. Calculate pressure distribution in hydronic systems. (IV)
5. Explain the properties of fluid flow in pipes. (V)
6. Calculate fluid flow, pressure loss, and head loss in pipes. (VI)
7. Describe pump characteristics and evaluate pump performance. (VII)
8. Describe the process for pressurization of a closed hydronic system. (VIII)
9. Describe the process for pressurization and pressure boosting of open hydronic systems. (IX)
10. Calculate heat storage capacity for specific applications. (X)
11. Explain specific types of terminal users (units) and evaluate coil performance. (XI)
12. Describe the theory and components related to automatic control. (XII)
13. Explain specific types of distribution systems and calculate constant and variable volume. (XIII)
14. Describe expansion and pressurization equipment and determine correct tank size. (XIV)
15. Compare and contrast constant volume to variable volume of chilled water systems. (XV)
16. Describe the operating temperature and pressures for low temperature water systems. (XVI)
17. Describe the procedure for interconnecting dual temperature systems. (XVII)
18. Explain the design and operation of high temperature water systems. (XVIII)
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MCCCD Official Course Outline:
 
WRT205   19986-20086 FUNDAMENTALS OF HYDRONICS
    I. Terminology
        A. Abbreviations
        B. General terminology
        C. Temperature ranges
      II. Measurement Systems
          A. United States customary system(USCS)
          B. International system of units(SI)
          C. Conversion factors
          D. Problems
        III. Properties and Calculation of Water
            A. Properties of water
            B. Calculations
          IV. Pressure Distribution
              A. Bernoulli's equation
              B. Pressure continuity
              C. Gravity circulation
              D. Resistance head
              E. Pressure distribution in open systems
              F. Velocity head
              G. Parallel paths
            V. Fluid Flow in Pipes
                A. Noise and erosion
                B. Laminar flow
                C. Effects of flow rate variation
                D. Pipe sizing
                E. Pump selection
              VI. Fluid Flow Calculations
                  A. Effects of flow rate variation
                  B. Frictional resistance
                  C. Pipe sizing
                  D. Temperature difference
                  E. Head loss
                  F. Pump selection
                VII. Pump Characteristics and Performance
                    A. Characteristics curve
                    B. Parallel pump operation
                    C. Variable speed operation
                    D. Series pump operation
                    E. Performance
                      1. starting and stopping pumps
                      2. impeller size
                      3. low flow rates
                  VIII. Pressurization Process for Closed System
                      A. Base pressure-purpose and method
                      B. Primary circuits
                        1. pump suction
                        2. pump discharge
                        3. return
                        4. split pressurization
                      C. Primary- secondary systems
                      D. Interconnected heating and cooling system
                      E. Branches, subcircuits and secondary circuits
                    IX. Pressurization Process and Pressure Boosting for Open System
                        A. Different elevations- atmosphere
                        B. Combination open and closed systems
                        C. Vertical distribution
                        D. Lower supply primary circuits
                        E. Pressure boosting
                      X. Heat Storage Calculations
                          A. Heat storage- purpose and method
                          B. Constant-volume-flow 1 mixing type
                            2. displacement type
                          C. Open storage
                          D. Pressurized closed storage
                          E. Calculations
                            1. heat storage capacity
                            2. storage tank design
                        XI. Terminal Users(units)
                            A. Heat transfer
                            B. Types of terminal users
                            C. Coil performance
                          XII. Automatic Control
                              A. Theory
                              B. Control systems
                              C. Pilot-operated valves
                              D. Regulating valves
                              E. Application to hydronic systems
                            XIII. Distribution Systems
                                A. One-pipe
                                B. Two-pipe
                                C. Constant-volume
                                D. Variable-volume
                                E. Calculations
                              XIV. Expansion and Pressurization Equipment
                                  A. Expansion tank
                                  B. Pump pressurization
                                  C. Compression tank
                                  D. Calculations for tank size
                                XV. Chilled Water Systems
                                    A. Constant volume
                                    B. Variable volume
                                    C. Similarities and differences
                                  XVI. Low Temperature Water Systems
                                      A. Low temperature water systems
                                      B. Heat sources
                                      C. Temperature
                                      D. Pressures
                                    XVII. Dual Temperature System
                                        A. Interconnection- terminal end
                                        B. Interconnection- generator
                                        C. Interconnection -both ends
                                      XVIII. High Temperature Water Systems
                                          A. Design parameters
                                          B. Flash suppression
                                          C. Blending different temperatures
                                          D. Pumps in high water service
                                          E. User end high temperature water
                                          F. Water recirculation
                                          G. Type and location of expansion and pressurization means
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