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What
is District Energy?
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"District Energy" means heat generated
in a central boiler plant and distributed through
pipes to customers. District Energy systems
provide the means to exploit waste heat from
a number of different sources. |
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Combined Heat and Power (CHP) implies that
waste heat from electricity production is supplied
to District Energy systems. CHP is also known
as "co-generation". |
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District Energy can in conjunction with CHP
produce heat and electricity with an overall
efficiency of 85-90% of the input fuel. This
efficiency is 30-40% higher than separate production
of heat and electricity. |
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The European Commission estimates that doubling
the amount of CHP electricity in the EU will
result in CO2 reductions corresponding
to half those to which the EU has committed
itself. District Energy is and will be an essential
factor for going from the present 9% of CHP
generated electricity of the total EU electricity
market up to 18%. |
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District Energy systems can vary substantially
in size, from systems supplying only a few buildings,
to system that supplies entire capital cities.
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District Energy allows the utilisation of
low grade fuels that would otherwise go to waste
(such as municipal refuse, waste heat from different
sources). As an example, geothermal heat is
supplying over 90% of buildings in Iceland with
CO2 free heat. In Sweden, over half
the fuels used for district energy are renewable.
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District Energy is produced centrally and
therefore allows central removal of harmful
substances, which leads to a better overall
environmental protection level. |
Source: Euroheat
& Power Website
District Energy in Sheffield
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Sheffield's District Energy Network is the
largest and most successful in the UK. It was
established in 1988 and is still expanding.
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The Energy Recovery Facility in the city currently
utilises 225,000 tonnes of waste to produce
up to 60MW of thermal energy and up to 19MW
electrical energy. |
Sheffield's Extensive Network
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There are 44km of pipeline installed to deliver
heat to buildings in Sheffield across 2 networks.
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Network 1 pipeline - approximately 12km, serving
Park Hill, Norfolk Park and Castle College.
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Network 2 pipeline - approximately 32km, supplying
many public and commercial developments in the
City Centre and to the North and West of the
city, incorporating the University Campuses
and Weston Park Hospital. |
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The network is supported by back-up facilities
with 3 pre-heated stand-by/peaking boiler stations
ready to come on line at a moments notice with
84.6 MW of capacity. |
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There are currently over 140 buildings connected
to the District Energy Network, including Universities,
Health facilities, Shops, Offices and Leisure
facilities. |
Energy Delivered & Benefits Received
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Over 2,800 dwellings have benefitted from
district energy in the Sheffield area. |
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In a typical year around 120,000 MWh of heat
is delivered to buildings in Sheffield City
Centre and the surrounding areas. |
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Annually over 21,000 t of CO2
is prevented from being released. |
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Veolia
Environmental Services Plc, Lumley St. Service
Centre, Lumley St., Sheffield S4 7ZJ |
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Tel: 0114 228
3660 |
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FAQs
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Click HERE
for
answers to some of
our frequently asked questions. |
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