Training: District Heating Awareness

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Course covering design principles, commissioning options, and network management.

DHW System types

  • Centralised DHW storage
  • Centralised thermal storage and plate heat exchangers
  • Domestic hot water cylinders
  • Coils, plate heat exchanger recovery
  • Domestic thermal stores
  • Intermediate storage systems
  • Heat Interface Units

Central Heating System types

  • Direct connection
    • Variable flow
    • Mixed flow
    • Leak protection
  • Indirect connection
  • Thermal storage

HIU Functions

  • Setpoints
  • Limits
  • Keep Warm
  • Legionella
  • Alarms

Components used in HIUs

  • Mechanical control valves
  • Electronic control systems
  • Sealed system components
  • First fix systems

Circulatory Systems

  • Differential pressure control
  • Mechanical and thermal bypasses
  • TRVs and balancing

Sizing

  • Diversity and loading
    • DHW
    • Central heating
  • Storage versus instantaneous DHW
  • Pump and pipe selection
  • Buffer storage sizing
  • Using plate heat exchanger sizing software

Heat Generation

  • Condensing Boilers
  • Biomass
  • Heat Pumps
  • CHP
  • Solar Thermal
  • Waste Heat

Heat Losses

  • Categories of energy loss
  • Pipework layouts
  • Return temperatures and VWART
  • Keep warm modes
  • Network temperatures
  • Storage versus instantaneous
  • Pipe insulation

System Quality

  • Flushing
  • System pressurisation and dosing
  • Maintaining systems

Monitoring and Metering

  • Metering energy use
  • Monitoring systems to maintain efficiency
  • Network control
  • Cabling

Advanced Strategies

  • Load shifting
  • Networked hot water priority
  • Managed storage
  • Electric top-up
  • Waste water heat recovery