What is District Heating - Per Alex Sørensen, PlanEnergi

Workshop in Ireland 12-13 June 2014

What is district heating

Per Alex Sørensen

Per Alex Sørensen: Head of Dept. PlanEnergi Denmark [email protected] PlanEnergi: Consultant Engineers 30 years years with renewable energy • biomass • biogas • solar thermal • heat pumps • district heating • energy planning

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Per Alex Sørensen




Per Alex Sørensen

Design temperatures for central heating systems in buildings




Per Alex Sørensen

Substations in buildings indirect connection- Danfoss




Per Alex Sørensen




Per Alex Sørensen

Substations in buildings direct connection - Danfoss




Per Alex Sørensen

Pipes


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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




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




Per Alex Sørensen


What is District Heating - Per Alex Sørensen, PlanEnergi

Environment

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