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What is District Heating - Per Alex Sørensen, PlanEnergi
1. Workshop in Ireland 12-13 June 2014
What is district heating
Per Alex Sørensen
Per Alex Sørensen:
Head of Dept.
PlanEnergi
Denmark
pas@planenergi.dk
PlanEnergi:
Consultant Engineers
30 years years with
renewable energy
• biomass
• biogas
• solar thermal
• heat pumps
• district heating
• energy planning
2. Workshop in Ireland 12-13 June 2014
What is district heating
Per Alex Sørensen
3. Workshop in Ireland 12-13 June 2014
What is district heating
Per Alex Sørensen
Design temperatures for central heating
systems in buildings
4. Workshop in Ireland 12-13 June 2014
What is district heating
Per Alex Sørensen
Substations in buildings indirect connection- Danfoss
5. Workshop in Ireland 12-13 June 2014
What is district heating
Per Alex Sørensen
6. Workshop in Ireland 12-13 June 2014
What is district heating
Per Alex Sørensen
Substations in buildings direct connection - Danfoss
7. Workshop in Ireland 12-13 June 2014
What is district heating
Per Alex Sørensen
Pipes
8. Workshop in Ireland 12-13 June 2014
What is district heating
Per Alex Sørensen
The district heating system - Grundfos
1. Boiler Houses
2. Power Plant
3. Main Substation in
distribution net
4. Local Substation in the
building
5. Local Substation with
DHW production
6. Main distribution net
7. Booster pumps in the
building
9. Workshop in Ireland 12-13 June 2014
What is district heating
Per Alex Sørensen
What are advantages and disadvantages?
Disadvantages:
Civil works and disruption.
Capital costs and collective financing and billing issues.
Distribution losses
Single temperature distribution
Need demand density (Passive Houses)
Collective agreement and ownership structure, regulation etc.
Anticompetitive – customer is locked into a monopoly
Planning access and wayleaves
Maintenance
Diversity of use – need summer loads – Need commercial.
Advantages:
Use of Waste heat
Generation efficiency (aids distributed generation of other energy sources)
Cleaner Generation
Flexible fuel sources
Losses centralised, you pay for what you use
Lower space and maintenance for consumers
Enables bioenergy or local supply
Safer for consumers with no localised combustion
Cheaper
More Reliable, robust and diversity of sources
Larger scale allows for R&D
10. Workshop in Ireland 12-13 June 2014
What is district heating
Per Alex Sørensen