Acknowledgments |
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xv | |
Acronyms |
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xvii | |
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1 | (1) |
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District Heating Background |
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1 | (1) |
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2 | (1) |
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2 | (1) |
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3 | (2) |
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3 | (1) |
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4 | (1) |
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Initial Capital Investment |
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5 | (1) |
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5 | (1) |
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5 | (1) |
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5 | (1) |
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6 | (1) |
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6 | (1) |
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6 | |
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Chapter 2 Planning and System Selection |
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1 | (2) |
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Establish and Clarify the Owner's Scope |
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3 | (1) |
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Development of the Database |
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4 | (2) |
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Sources of Data for Existing Systems |
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4 | (1) |
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4 | (1) |
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5 | (1) |
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Heat Load Density and Piping Costs |
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5 | (1) |
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6 | (8) |
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6 | (1) |
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Local and Institutional Constraints |
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7 | (1) |
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7 | (3) |
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10 | (1) |
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10 | (1) |
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Heat Distribution Systems |
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11 | (1) |
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Construction Considerations and Cost |
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11 | (1) |
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12 | (1) |
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13 | (1) |
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Operation and Maintenance Costs |
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13 | (1) |
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Economic Analysis and User Rates |
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14 | (1) |
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Master Planning Conclusions |
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14 | (2) |
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Alternative Development for Heat Supply |
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16 | (5) |
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Methods of Heat Generation |
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16 | (1) |
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Conventional Heat-Only Boiler Plants |
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16 | (3) |
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District Heat Supply from Cogeneration Steam-Turbine-Based Stations |
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19 | (2) |
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Retrofit of Single-Purpose Electric Generating Steam Turbine to District Heat Supply |
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21 | (18) |
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21 | (1) |
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Configuration and Control of Steam Turbine Retrofits for District Heating |
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22 | (4) |
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26 | (1) |
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Examples of Power Plants Retrofitted to Cogeneration |
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27 | (7) |
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District Heating/Cogeneration from Stationary Gas Turbines |
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34 | (3) |
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Reciprocating-Engine-Based Cogeneration/District Heating Systems |
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37 | (1) |
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37 | (2) |
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Integration of Heating, Cooling, and Electric Generation |
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39 | (4) |
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Centralized Chilled-Water Generation by Thermal Energy |
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40 | (1) |
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Centralized Chilled-Water Generation by Electric Energy |
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41 | (2) |
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Decentralized Chilled-Water Generation by Thermal Energy |
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43 | (1) |
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Geothermal District Heating---Direct Use |
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43 | (3) |
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44 | (2) |
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46 | (1) |
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46 | (2) |
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48 | |
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Chapter 3 Central Plant Design for Steam and Hot Water |
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1 | (2) |
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Higher Thermal Efficiency |
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1 | (1) |
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2 | (1) |
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2 | (1) |
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2 | (1) |
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2 | (1) |
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2 | (1) |
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2 | (1) |
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2 | (1) |
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3 | (1) |
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Central Plant Disadvantages |
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3 | (1) |
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4 | (1) |
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Central Plant Heating Medium |
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4 | (2) |
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5 | (1) |
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5 | (1) |
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5 | (1) |
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Pressure and Temperature Requirements |
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5 | (1) |
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Boilers Pressure and Temperature |
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6 | (1) |
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6 | (1) |
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6 | (1) |
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7 | (1) |
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7 | (1) |
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Overall (or Thermal) Efficiency |
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7 | (1) |
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7 | (1) |
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Performance Codes and Standards |
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8 | (1) |
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Commercial Heating Boilers |
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8 | (1) |
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Central Plant Design for Steam |
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8 | (23) |
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Typical System Arrangements |
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8 | (2) |
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10 | (1) |
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Construction Cost Estimate |
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11 | (1) |
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12 | (1) |
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Environmental Regulations |
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12 | (1) |
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12 | (1) |
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13 | (1) |
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14 | (1) |
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15 | (2) |
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Heating, Ventilating and Air-Conditioning (HVAC) Systems |
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17 | (1) |
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18 | (1) |
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18 | (1) |
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19 | (1) |
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19 | (1) |
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20 | (1) |
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Boiler Construction Options |
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20 | (1) |
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21 | (1) |
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Combustion Technology Selection |
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21 | (2) |
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23 | (1) |
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24 | (1) |
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25 | (1) |
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25 | (1) |
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Water Treatment and Makeup |
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25 | (1) |
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26 | (1) |
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26 | (1) |
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26 | (1) |
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27 | (1) |
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28 | (1) |
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28 | (1) |
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29 | (1) |
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29 | (1) |
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Maintenance and Operation |
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30 | (1) |
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30 | (1) |
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Central Plant Design for Medium- and High-Temperature Water |
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31 | (15) |
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31 | (1) |
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32 | (1) |
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33 | (1) |
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33 | (1) |
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Direct-Fired HTW Generators |
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34 | (7) |
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Direct-Contact Heaters (Cascades) |
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41 | (1) |
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41 | (3) |
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44 | (2) |
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46 | (1) |
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46 | (1) |
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46 | (1) |
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Other Design Considerations |
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46 | (1) |
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Central Plant Design for Low-Temperature Water |
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46 | (19) |
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Typical System Arrangements |
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47 | (2) |
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49 | (1) |
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50 | (2) |
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52 | (1) |
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52 | (1) |
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52 | (1) |
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Expansion Tanks and System Pressurization |
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52 | (3) |
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55 | (1) |
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Pump Curves and Water Temperature for Constant-Speed Systems |
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55 | (2) |
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57 | (2) |
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59 | (1) |
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59 | (1) |
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59 | (1) |
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Variable-Speed Pumping Application |
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60 | (1) |
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61 | (1) |
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Flow Design Considerations |
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62 | (1) |
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63 | (1) |
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Makeup and Fill-Water Systems |
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64 | (1) |
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64 | (1) |
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Emission Control and Instrumentation |
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65 | (7) |
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Pollutants and Control Techniques |
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65 | (1) |
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65 | (2) |
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67 | (1) |
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67 | (1) |
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67 | (1) |
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Volatile Organic Compounds (VOCs)/Hydrocarbons (HCs) |
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67 | (1) |
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Calculation of Annual Emissions for District Heating Boilers |
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68 | (1) |
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Current Emission Standards |
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69 | (1) |
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69 | (3) |
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Instrumentation and Controls for District Heating Plants |
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72 | (21) |
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72 | (2) |
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74 | (5) |
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District Heating Plant Controls |
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79 | (1) |
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80 | (2) |
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82 | (1) |
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83 | (2) |
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Energy Management and Control Systems |
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85 | (2) |
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87 | (1) |
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88 | (1) |
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Boilers Supervisory Control Strategies and Optimization |
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89 | (1) |
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Supply Water and Supply Pressure Reset for Boilers |
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90 | (1) |
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Supervisory Control and Data Acquisition (SCADA) System |
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91 | (2) |
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93 | |
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Chapter 4 Distribution Systems |
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1 | (3) |
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Objectives of Hydraulic Design |
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1 | (1) |
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1 | (1) |
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2 | (1) |
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2 | (1) |
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2 | (1) |
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3 | (1) |
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Condensate Drainage and Return |
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3 | (1) |
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Distribution System Construction |
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4 | (2) |
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6 | (1) |
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7 | (20) |
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Site-Fabricated Underground Systems |
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11 | (5) |
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Prefabricated Conduit Systems |
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16 | (11) |
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Geotechnical Trenching and Backfilling |
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27 | (2) |
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Piping Materials and Standards |
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29 | (1) |
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Supply Pipes for Steam and Hot Water |
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29 | (1) |
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29 | (1) |
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Pipe Expansion and Flexibility |
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29 | (9) |
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31 | (3) |
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34 | (1) |
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35 | (1) |
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Analyzing Existing Piping Configurations |
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35 | (1) |
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Expansion Joints and Expansion Compensating Devices |
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36 | (2) |
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Cathodic Protection of Direct Buried Conduits |
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38 | (2) |
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Sacrificial Anode Systems |
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38 | (1) |
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Impressed Current Systems |
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39 | (1) |
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Design, Maintenance, and Testing |
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39 | (1) |
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40 | (1) |
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40 | (1) |
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40 | (1) |
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Valve Vaults and Entry Pits |
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40 | (9) |
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41 | (1) |
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42 | (2) |
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44 | (1) |
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44 | (1) |
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44 | (1) |
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45 | (1) |
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45 | (1) |
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45 | (1) |
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46 | (1) |
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47 | (1) |
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Construction of Systems without Valve Vaults |
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48 | (1) |
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49 | |
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Chapter 5 Consumer Interconnection |
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1 | (1) |
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1 | (3) |
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1 | (2) |
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3 | (1) |
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4 | (4) |
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4 | (3) |
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7 | (1) |
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7 | (1) |
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8 | (1) |
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8 | (1) |
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8 | (5) |
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8 | (2) |
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10 | (3) |
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Building Conversion to District Heating |
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13 | (1) |
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Temperature Differential Control |
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13 | (1) |
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13 | (3) |
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16 | |
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Chapter 6 Heat Transfer Calculations for Piping Systems |
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Thermal Design Conditions |
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1 | (1) |
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2 | (3) |
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Soil Thermal Conductivity |
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2 | (1) |
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Temperature Effects on Soil Thermal Conductivity and Frost Depth |
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3 | (1) |
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4 | (1) |
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Undisturbed Soil Temperatures |
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5 | (6) |
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Heat Transfer at Ground Surface |
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7 | (4) |
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Insulation Types and Thermal Properties |
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11 | (1) |
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Steady-State Heat Loss/Heat Gain Calculations for Systems |
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12 | (26) |
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Single Buried Uninsulated Pipe |
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15 | (2) |
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Single Buried Insulated Pipe |
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17 | (1) |
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Single Buried Pipe in Conduit with Air Space |
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18 | (2) |
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Single Buried Pipe with Composite Insulation |
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20 | (6) |
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Two Pipes Buried in Common Conduit with Air Space |
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26 | (2) |
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Two Buried Pipes or Conduits |
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28 | (2) |
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Pipes in Buried Trenches or Tunnels |
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30 | (4) |
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Pipes in Shallow Trenches |
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34 | (1) |
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Pipes in Loose Fill Insulation |
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35 | (2) |
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Buried Pipes with Other Geometries |
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37 | (1) |
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38 | (1) |
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Economical Thickness for Pipe Insulation |
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38 | (4) |
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Calculating Temperatures of System Components and Surrounding Soil Temperatures |
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42 | (7) |
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43 | (1) |
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44 | (1) |
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45 | (1) |
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45 | (2) |
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Spherical Heat Leak with Superimposed Parallel Line Source of Heat |
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47 | (2) |
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Thermal Impacts on Utilities Adjacent to Buried Heat Distribution Systems |
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49 | (1) |
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49 | |
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Chapter 7 Thermal Storage |
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1 | (2) |
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1 | (1) |
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The Purpose of the Thermal Storage |
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1 | (1) |
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How Thermal Storage Works |
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2 | (1) |
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3 | (1) |
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3 | (1) |
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Heat Production Optimization |
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3 | (1) |
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4 | (7) |
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5 | (2) |
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7 | (1) |
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Charging---Directly Connected Heat Storage |
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8 | (1) |
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Discharging---Directly Connected Heat Storage |
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8 | (1) |
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Charging/Discharging---Pressurized and Decentralized Tank |
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9 | (1) |
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10 | (1) |
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11 | (3) |
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11 | (1) |
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12 | (1) |
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12 | (1) |
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Regulatory Requirements (Europe) |
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13 | (1) |
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14 | (1) |
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14 | (1) |
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14 | (1) |
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Examples of Thermal Storage |
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15 | (2) |
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15 | (1) |
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16 | (1) |
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17 | (1) |
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17 | |
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Chapter 8 Operation and Maintenance |
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1 | (1) |
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2 | (1) |
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2 | (1) |
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3 | (1) |
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3 | (1) |
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3 | (1) |
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Water Treatment and Filtration |
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4 | (3) |
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4 | (1) |
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Corrosion Protection and Preventive Measures |
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5 | (1) |
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White Rust on Galvanized Steel Cooling Towers |
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6 | (1) |
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7 | (1) |
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8 | (1) |
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8 | (1) |
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Biological Growth Control |
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8 | (5) |
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9 | (3) |
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12 | (1) |
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Suspended Solids and Depositation Control |
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13 | (2) |
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13 | (2) |
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Selection of Water Treatment Method |
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15 | (5) |
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Once Through Systems (Seawater or Surface-Water Cooling) |
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16 | (1) |
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Open Recirculating Systems (Cooling Towers) |
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16 | (1) |
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Closed Recirculating Systems (District Heating Distribution Systems) |
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17 | (1) |
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Medium- and High-Temperature Hot-Water Systems |
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17 | (1) |
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European Practice in Closed Distribution Systems |
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18 | (1) |
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18 | (1) |
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Steam Distribution and Condensate Collection Systems |
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19 | (1) |
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20 | (6) |
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22 | (4) |
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26 | |
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Appendix A 96-Hour Boiling Water Test |
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1 | (1) |
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Apparatus and Specimens for Other than Wet Poured Systems |
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1 | (1) |
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Test Procedure for Other than Wet Poured Systems |
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2 | |
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Appendix B Climatic Constants |
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1 | (1) |
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2 | |
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Case Study A District Energy/CHP System In Jamestown, New York |
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1 | (1) |
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1 | (1) |
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1 | (5) |
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1 | (2) |
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Transmission and Distribution Network |
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3 | (1) |
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4 | (1) |
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Retrofitting Electrically Heated Buildings to Hot Water |
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5 | (1) |
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6 | (2) |
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Phased Implementation Philosophy |
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7 | (1) |
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7 | (1) |
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8 | (1) |
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8 | (1) |
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8 | (1) |
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9 | (1) |
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9 | (1) |
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9 | (1) |
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9 | (1) |
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Demand-Side Management Application |
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9 | (1) |
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10 | (1) |
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10 | (1) |
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10 | (1) |
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11 | (1) |
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Case Study B Crotched Mountain Biomass District Heating System |
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12 | (1) |
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12 | (1) |
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Background on the Crotched Mountain Facility |
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12 | (1) |
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12 | (6) |
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12 | (1) |
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13 | (4) |
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17 | (1) |
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Building Interconnection and Loads |
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17 | (1) |
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18 | (1) |
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Economic Benefits to the User |
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18 | (1) |
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19 | (1) |
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19 | (1) |
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19 | (1) |
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19 | (1) |
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Case Study C District Heating Conversion From Steam To Hot Water At The Savannah Regional Hospital |
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20 | (1) |
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20 | (1) |
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20 | (1) |
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Original System Description |
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20 | (2) |
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22 | (1) |
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22 | (1) |
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23 | (1) |
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Revised Central Plant Requirements |
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23 | (2) |
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|
25 | |
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Appendix D Terminology for District Heating |
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|
1 | |