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decentralised energy

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We can use the following technologies for heating and cooling: Ground-air heat exchangers ... We would use three types of heat pumps on this development: ... – PowerPoint PPT presentation

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Title: decentralised energy


1
decentralised energy the role of a sustainable
sports centre Winchester Fit for the
Future With input and advice from the University
of Winchester and MITIE April 2013
2
Summary
  • Winchester is considering the option to build a
    new multi-sports facility at Bar End
  • Through Winchester Fit For the Future, sports
    clubs, the community and the University are
    helping to shape and steer the development of
    this facility
  • There is a keen desire to make this a sustainable
    development
  • This slide deck sets out ideas about how to
    deliver a sustainable energy strategy

3
Factors
  • The factors that drive / create a
    sustainable facility are as follows
  • Building location Is it close to an existing or
    proposed low carbon infrastructure, such as a new
    housing, supermarket or energy development?
  • Utility connections Are we going to use
    traditional electricity and gas or can we access
    low carbon (e.g. wind) generation?
  • Fabric What is the proposed method of
    construction of the building? The materials /
    fabric choice have a dramatic effect on the life
    cycle costs and carbon emissions of a
    development.
  • Services Can we minimise the amount of heating,
    hot water, cooling, lighting and power that we
    need?
  • Management strategy How will the services be
    managed? Can we develop a building that is truly
    simple to operate and maintain?

Questions ?
4
Location / Utilities
  • The proposed site is located at Bar End
  • There are no major developments currently planned
    that are close to the site and which the site can
    link to
  • The sports facility will therefore be a catalyst
    for this area, rather than a recipient of benefit
    from other major developments in the area
  • There are no low carbon utilities for the site to
    connect to
  • The opportunity is therefore for this sports
    centre to become the blueprint for ecologically
    sound development at the Bar End site and across
    the broader area of Highcliffe / East Winchester

5
Fabric
  • The most important aspect is the fabric of the
    building.
  • There is always a risk that people look at the
    initial cost and create a building which has a
    very low heat demand and that meets current
    building regulations but is almost uninhabitable
    as the building retains heat which cannot be
    used.
  • We need to create a structure that is thermally
    efficient but also thermally wise so that we
    use the heat we need, and do not generate or
    retain that which is surplus to requirements.
    History has lessons we can learn from.

Questions ?
6
Fabric
  • Winchester Cathedral can teach us many lessons
  • It is a heavyweight structure that maintains a
    relatively constant temperature all year round,
    by virtue of its mass
  • The effects of ambient temperature are
    ameliorated by the effects of this mass
  • These types of structures also last a long time,
    so life cycle costs are low

7
Services
  • We need to keep the services strategy simple
  • The technologies we need exist and are used
    extensively world-wide. We just need to collect
    them together in such a way as to maximise their
    use on this scheme.
  • There are good examples of such technologies
    being used in sports facilities, both in the UK
    and abroad
  • Good building design and the right services
    strategy can also support an effective management
    strategy low maintenance, low input, efficient
    use of labour so staff are where you want them
    to be, e.g. coaching or customer services, not
    changing lightbulbs or adjusting heating
    controls!

Questions ?
8
Services - continued
  • We can use the following technologies for heating
    and cooling
  • Ground-air heat exchangers these are pipes laid
    under the structure that use the mass of the
    earth to reduce heating and cooling demands of
    the building
  • Ground source systems ground source systems can
    be created that capture energy from the ground
    and can be used to provide a source of chilled
    water for cooling (e.g. Gym systems) and low
    grade heat as a source for heat pumps
  • Heat pumps these machines recover low grade
    energy and upgrade it to a high temperature using
    electricity. The efficiency of this technology
    has now been recognised by the government and a
    feed in tariff called the Renewable Heat
    Incentive (RHI) will incentivise and financially
    support the use of such technology. We would use
    three types of heat pumps on this development
  • Swimming pool unit, to dehumidify pool air and
    heat the pool
  • Space heating
  • Domestic hot water
  • Solar panels photovoltaic panels would be used
    to generate electricity, and evacuated tube
    systems would be used to generate hot water

Questions ?
9
Services - continued
  • Additional technologies would help reduce
    utilities costs and limit environmental impact
  • Rain water harvesting
  • Low energy glazing
  • Sun tubes we can use solar energy to create
    daylight within a totally concealed space. This
    would allow the creation of a building with a
    very low energy fabric structure, whilst still
    maintaining the link to natural light so light
    enters the building during the day but has
    limited/zero effect on building temperature.

Questions ?
10
Examples
  • As advised earlier all the technologies mentioned
    have been utilised elsewhere. Here are some
    notable examples from the sports sector
  • Beijing Science Technology University gymnasium
    daylight systems
  • Sunderland Aquatics centre daylight systems
  • Kaohsiung football stadium, Taiwan solar
    powered
  • Stuttgart sports hall earth duct systems
  • As well as the above specific examples, there are
    many existing heat pump installations, and the
    forthcoming RHI tariffs will further encourage
    the use of such technologies as their costs will
    be effectively funded by the tariffs.

Questions ?
11
Comment
  • Projects in the UK have always tended to be
    viewed capital first and annual cost second, so
    capital build targets are met but a legacy of
    inefficiency and cost is left for the users /
    operators
  • We have an opportunity to combine the know how of
    many existing businesses and technologies to
    create a building that will be truly cost
    efficient over its life time, not only in pounds
    and pence but also in carbon terms
  • We seek to create a building whose simplicity
    will deliver life time benefits for all and that
    will become a paragon of design excellence for
    the developments that take place in this area of
    Winchester

Questions ?
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