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I N S TA L L AT I O N N E W S
Green energy solution
Hi tech use for chilled beams
A new highly visible office complex in Cambridge has used Fläkt Woods chilled
beams to help create the three metre full-height ceiling requirements of NAPP
Pharmaceuticals, for their three new office buildings on the Cambridge Science Park.
The 1.75 million sq ft Park was established by Trinity College in 1970, making it
the UK’s oldest science park. NAPP moved there in the early 1980s, opening its
striking UK headquarters building in 1983, a 165,000 sq ft office building, known
affectionately as the ‘toast rack’.
The Company started work on their new office development in October 2007. It
knew it wanted generous office heights within the 110,000 sq ft of office space, and
this caused some initial budget issues on the £28m project.
It was thanks to early co-ordination that NAPP was able to save up to 25% off the fit-out costs, “As the tenant we had the benefit of
engaging with the architect Aukett by Fitzroy Robinson and Builder and Main Contractor SDC Construction, at every level of design” says
Bob Chart of NAPP Pharmaceutical.
Bob was involved from day one, and as a result, the office space has been designed to be flexible, achieving the prerequisite floor to
ceiling heights of three metre, as well as fully accessible ceilings and raised access floors. Feature walls, relaxing zones and exhibits are
sprinkled throughout the open space, with enhanced views for the occupants and calculated daylight infiltration.
The two outer buildings contain over 1100 passive chilled beams that have been installed above a perforated metal ceiling system.
Supply air is delivered into the occupied zone via floor swirl diffusers.
One of Scotland’s finest hotels is reaping the benefits of switching
Within the central building, bespoke exposed multi-service passive chilled beams were chosen to compliment their high tech
to a greener, lower carbon solution for its heating and electrical
environment. Flakt Woods engineers were able to create an extremely low profile chilled beam with aluminium-crafted exterior, housing
power requirements based on a new combined heat and power
integrated passive infrared sensors, speakers and direct/indirect lighting.
system (CHP).
The three buildings, linked by glazed corridors, are designed and specified to the highest standards throughout. Internally, office areas
The Royal George Hotel in Perth on the banks of the River Tay
feature high levels of daylight and views, and excellent finishes. The stunning reception area, entered from the landscaped central
has been in business for over 200 years. Discerning guests have
courtyard, leads to upper floors accessed via the stairwell or the central core, which contains lifts, services, toilets and a fire-fighting shaft.
included Queen Victoria, who awarded the hotel a rare Royal
Externally, harmonic and expressive stainless steel cladding is used to bring a contemporary and distinctive design, while the building
Warrant after she stayed there in 1848.
makes use of glass curtain walls, complimented with horizontal brise soleil panels, that extend out from the building, reducing solar heat
In recent months an EC Power gas-fired CHP unit and matching
gain and glare, and enhancing its overall visual appeal.
thermal store working in conjunction with new condensing boiler
The reception features a large interior open space, and this clean high tech look provides easy access to all floors, enhancing the
plant has doubled the hotel’s energy efficiency to 96% and slashed
function of the building. The elements of the buildings are very neatly composed to achieve optimal orderliness and inspiring design.
electricity bills by a third – despite rising fuel prices.
Their prominence in relation to the A14 is certainly a talking point, as unique mood lighting is clearly visible from this busy artery road.
The Royal George’s owner and manager Eddie Anderson is
The architect has created themes within the building; the lighting designers were challenged to match the moods and highlight and
naturally delighted with his experience of green engineering.
accentuate these features.
“I’ve been really impressed with the savings delivered by the EC
The result is an aesthetically unique interior space. The scheme also incorporates day lighting design features helping to reduce the
Power system. The flexibility of programming and the scope of the
light output from the perimeter fixtures base upon photocells.
reporting is excellent.”
At the heart of the system is an XRGi-13G mini-CHP machine,
part of the EC Power marketed in the UK by SAV Systems. This
rugged machine, with its ultra-reliable Toyota gas-fired engine, can
provide 4-13kW electricity and 17-29kW heating. And there’s no
need to export spare electricity to the grid – there is no spare
Light up with LED’s
electricity. New Spike LED light columns from EcoLEDLighting and Holophane Europe are
The hotel has a round the clock energy requirement, with being used to promote accessibility and safety for users and visitors to Milton
electricity needed for power and lighting, although demand reduces Keynes Hospital. Located in a park close to the hospital, the custom-built fittings
at night time. Electricity generation matches load over each 24- deliver enhanced light levels on pathways as well as significantly improving
hour period while the unique modulating system ensures that the sightlines for pedestrians visiting the hospital and nearby public transport
electricity generated never exceeds demand. terminus.
Waste heat generated by the micro-CHP unit is fed through a The project to improve safety and access around the hospital was undertaken
special heat exchanger and used to heat water, which is stored in a by Milton Keynes Council who had become concerned that people were making
thermal store at around 80°C. Water from the store can be drawn unnecessary diversions because the main pathways were badly lit in places. WSP
off to provide heating and domestic hot water services as required. were commissioned to undertake a redesign and upgrade of the existing lighting arrangements. They chose a bespoke column fitting from
The EC Power mini-CHP system provides 60% of the Royal local lighting manufacturer Holophane, who cleverly integrated EcoLEDLighting’s cutting-edge, energy saving LED technology into a one-
George’s electricity – plus some 20,000kWh of free heat each off design that perfectly matches looks and performance.
month. Installed by electrical contractor Aylesbury Mains of Milton Keynes the eye-catching lights also link well with the green LED luminaires
Data from the daily operation of the system can be read on site used in the nearby subway and steps to allow pedestrians to follow a well lit path to, and around, the hospital.
and is also transmitted via the internet to the monitoring station in The new Spike LED light columns used technology and components developed for EcoLEDLighting’s ECOLED-16 luminaires. The
Bristol operated by SAV Systems for all EC Power CHP projects. ECOLED-16 has been tested by the Building Research Establishment (BRE) and the British Standards Institution (BSI) for performance
A minimum reduction in CO2 emissions of 30,000 kg is expected and product life making its LED light engine and optics the Ideal choice for the Spike LED light columns.
every year, making the Royal George green as well as a pleasant The ECOLED-16 is a UK manufactured luminaire that is low maintenance, low energy and offers excellent TCO (total cost of ownership)
place to stay. - all backed up by the reassurance of a six year warranty and 100,000 hours LED lifetime.
Motors
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Extraction xttraction
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Motors for
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extreme conditions
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JUNE 2009 BUILDING SERVICES & ENVIRONMENTAL ENGINEER 13
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