Community Heating Systems
Community heating systems deliver hot water and heating from a decentralized energy centre to individual buildings and dwellings.
Community heating suffers some heat losses and sometimes high capital costs, but in return creates future-proofed developments that are ready for new technologies. A community heating system has a central heat source (typically a gas or biomass boiler), a heat distribution network and varying types of heat distribution system in each dwelling. It may serve a handful of flats in a small block, a large tower block or possibly several streets of buildings. However in a retrofit situation it requires high density to be cost effective.
Some systems only provide space heating, not hot water. Some have a large central hot water tank with direct supply to flats, while others use heat-exchangers within each flat. Community heating can make use of a wide number of heat sources and these can be changed more easily according to availability and price than individual systems. For example, switching to a biomass boiler is relatively straight forward and cost effective.
Summary
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Distribution of heat from decentralized heating plant
- Constraints: density of development determines the cost of the network, metering and billing services are required, public perception is often poor
- Advantages: creates future-proofed developments
- Typical Lifespan: 40-50 years for pipe work
Examples
- The Littlecombe Development, Dursley, Gloucestershire: District heating 1 - Pete West (PDF 2.8 MB)
- Comet Square, Hatfield, Hertfordshire: This new housing development officially opened in July 2008 and comprises 270 residential dwellings in four blocks (Fig. 8). A key element of the energy strategy was the implementation of community heating with CHP
- Decentralised energy in Aberdeen: District heating 2 - Michael King (PDF 1.6 MB)
Links
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Guide by NHBC Foundation: Community heating and combined heat and power
- Information Portal for Decentralised Energy http://www.dekb.co.uk/home/
- Presentation on District Heating with technical details: Mark Howell presentation (PDF 3.5 MB)
- http://www.cibse.org/pdfs/GPG234.pdf
