6. WANDA Heat

This part of the Help documentation contains all relevant information of the HEAT domain. First the core quantities which the in the heat domain are used, are described. An important difference with the Liquid domain are the temperature dependant properties of the fluid. All available component and node types for the HEAT domain are described. Each class description of the Heat-component contains the symbol, the list of types and the mathematical model. Each type description consists of the input list (with descriptions, dimensions and ranges), the component specific output list, the actions list and a list of error messages and explanations.

Contents

• 6.1. HEAT domain
  • 6.1.1. Core quantities
  • 6.1.2. Fluid properties
  • 6.1.3. Overview of Heat Components
  • 6.1.4. Component properties
  • 6.1.5. Hydraulic and thermal action tables
• 6.2. Heat nodes
  • 6.2.1. Mathematical model
  • 6.2.2. Heat node
  • 6.2.3. Heat node init (initial) pT
  • 6.2.4. Heat node init (initial) p
  • 6.2.5. Heat node init (initial) T
  • 6.2.6. Heat node with demand
  • 6.2.7. Heat node conditional init pT
• 6.3. 4-Way Heat exchanger
  • 6.3.1. Mathematical model
  • 6.3.2. Properties
    • 6.3.2.1. Hydraulic specifications
    • 6.3.2.2. Component specific output
    • 6.3.2.3. H-actions
    • 6.3.2.4. Component messages
• 6.4. Check valve / Non-return valve
  • 6.4.1. Mathematical model
  • 6.4.2. Heat Check valve properties
    • 6.4.2.1. Hydraulic specifications
    • 6.4.2.2. Component messages
• 6.5. Converters
  • 6.5.1. Mathematical model
  • 6.5.2. Liquid to heat converter
    • 6.5.2.1. Hydraulic specifications
    • 6.5.2.2. Component specific output
    • 6.5.2.3. H-actions
    • 6.5.2.4. Component messages
• 6.6. Heat air vessel
  • 6.6.1. Mathematical models
  • 6.6.2. Airvessel properties
    • 6.6.2.1. Hydraulic specifications
    • 6.6.2.2. Component specific output
    • 6.6.2.3. Component messages
• 6.7. Heat boundary
  • 6.7.1. Mathematical model
  • 6.7.2. Heat BoundPT
    • 6.7.2.1. Hydraulic specifications
    • 6.7.2.2. Actions
  • 6.7.3. Heat BoundMT
    • 6.7.3.1. Hydraulic specifications
    • 6.7.3.2. Actions
  • 6.7.4. Heat BoundT(PM)
    • 6.7.4.1. Hydraulic specifications
    • 6.7.4.2. Actions
• 6.8. Heat buffer
  • 6.8.1. Mathematical models
  • 6.8.2. Heat buffer properties
    • 6.8.2.1. Hydraulic specifications
    • 6.8.2.2. Component specific output
    • 6.8.2.3. Component messages
• 6.9. Heat exchanger
  • 6.9.1. Heat supply QHeat in
    • 6.9.1.1. Mathematical model
    • 6.9.1.2. Hydraulic specifications
    • 6.9.1.3. Component specific output
    • 6.9.1.4. Component messages
    • 6.9.1.5. Actions
  • 6.9.2. Heat supply Tdown
    • 6.9.2.1. Mathematical model
    • 6.9.2.2. Hydraulic specifications
    • 6.9.2.3. Component specific output
    • 6.9.2.4. Component messages
    • 6.9.2.5. Actions
  • 6.9.3. Heat supply QHeat with limits on T
    • 6.9.3.1. Mathematical model
    • 6.9.3.2. Hydraulic specifications
    • 6.9.3.3. Component specific output
    • 6.9.3.4. Component messages
    • 6.9.3.5. Actions
  • 6.9.4. Heat exchanger
    • 6.9.4.1. Mathematical model
    • 6.9.4.2. Hydraulic specifications
    • 6.9.4.3. Component specific output
    • 6.9.4.4. Component messages
    • 6.9.4.5. Actions
  • 6.9.5. Heat demand
    • 6.9.5.1. Mathematical model
    • 6.9.5.2. Hydraulic specifications
    • 6.9.5.3. Component specific output
    • 6.9.5.4. Component messages
    • 6.9.5.5. Actions
  • 6.9.6. Gas boiler
    • 6.9.6.1. Mathematical model
    • 6.9.6.2. Hydraulic specifications
    • 6.9.6.3. Component specific output
    • 6.9.6.4. Component messages
    • 6.9.6.5. H-actions
  • 6.9.7. Solar collector
    • 6.9.7.1. Mathematical model
    • 6.9.7.2. Hydraulic specifications
    • 6.9.7.3. Component specific output
    • 6.9.7.4. H-actions
    • 6.9.7.5. Component messages
  • 6.9.8. Solar collector based on ISO 9806:2017
    • 6.9.8.1. Mathematical model
    • 6.9.8.2. Hydraulic specifications
    • 6.9.8.3. Component specific output
    • 6.9.8.4. H-actions
    • 6.9.8.5. Component messages
• 6.10. Heat resist
  • 6.10.1. Mathematical model
  • 6.10.2. Heat Resist
    • 6.10.2.1. Hydraulic specifications
    • 6.10.2.2. Component specific output
    • 6.10.2.3. H-actions
    • 6.10.2.4. Component messages
• 6.11. Heat tank (flow-trough)
  • 6.11.1. Mathematical model
    • 6.11.1.1. Submerged state
    • 6.11.1.2. Free inflow state
  • 6.11.2. Heat tank
    • 6.11.2.1. Hydraulic specifications
    • 6.11.2.2. Component messages
• 6.12. Pipe
  • 6.12.1. Mathematical model
    • 6.12.1.1. Fluid equations
    • 6.12.1.2. Heat equations
    • 6.12.1.3. Heat by tracing
    • 6.12.1.4. Thermal expansion
    • 6.12.1.5. Additional losses
    • 6.12.1.6. Geometry
  • 6.12.2. Heat pipe
    • 6.12.2.1. Hydraulic specifications
    • 6.12.2.2. Component specific output
    • 6.12.2.3. Actions
• 6.13. Pump
  • 6.13.1. Mathematical model
    • 6.13.1.1. Affinity rules
    • 6.13.1.2. The pump model for N≥0 (QHE table)
    • 6.13.1.3. The complete pump model (suter curve)
    • 6.13.1.4. Interpolation of the pump speed
    • 6.13.1.5. Motor drive
  • 6.13.2. Pump properties
    • 6.13.2.1. Hydraulic specifications
    • 6.13.2.2. Component specific output
    • 6.13.2.3. Actions
    • 6.13.2.4. Component messages
• 6.14. Surge tower
  • 6.14.1. Mathematical model
  • 6.14.2. Surge tower properties
    • 6.14.2.1. Hydraulic specifications
    • 6.14.2.2. Component specific output
    • 6.14.2.3. Component messages
• 6.15. Valve
  • 6.15.1. Mathematical model
    • 6.15.1.1. Pressure loss coefficients
    • 6.15.1.2. Cavitation
  • 6.15.2. Valve properties
    • 6.15.2.1. Hydraulic specifications
    • 6.15.2.2. Component specific output
    • 6.15.2.3. Actions
    • 6.15.2.4. Component messages