Around the industry:Layout 1 22/5/09 09:48 Page 30
A R O U N D T H E I N D U S T R Y
ADVERTORIAL
ADVERTORIAL
SIGNIFICANT SAVINGS AT NORWICH UNION ADVANCED WOLF AHUS
Following an initial pilot project, Sabien
FROM WALTER MEIER
Technology’s M2G intelligent boiler load
optimisation technology has been rolled out
across the Norwich Union estate.
As part of its exclusive distribution agreement with
Wolf GmbH, Walter Meier (Climate UK) is offering
When Norwich Union (part of AVIVA) set
Wolf’s innovative KG Top range of air handling units
itself a target of reducing gas consumption
(AHUs).
by 5% in 2008, one of the key areas the
company looked at was the performance of
Across its 16 sizes, ranging from 2,100m
3
/h to
its boiler plant.
100,000m
3
/h, Wolf KG/KGW units combine high
performance and low energy consumption with sensible pricing and low cost of ownership. As
“As part of AVIVA’s CSR policy we are
such, they go far beyond the need to comply with standards and directives to encompass every
committed to sustainability and one element
detail of a project, from maximising design flexibility and optimising component sizes – right
of this is to focus on our use of resources,”
through to remarkable ease of installation and maintenance.
explained Norwich Union’s energy & utilities
manager Gregory Luxford. “A number of
The KG Top range incorporates modular construction for greater flexibility, along with several
technologies that claim to improve boiler
other innovative features. For example, the company has used the filter dimensions of a standard
efficiency were investigated and, following a
610mm x 610mm filter as the basis for all dimensions, so that the cross-section of the unit can
pilot trial, Sabien’s M2G was selected for installation across Norwich Union’s UK estate.
be fully utilised with no dead space.
The pilot, managed by Sabien, was carried out on three sites, for 30 days on each. During this
Traditionally, each function of an air-handling unit is housed in a separate box, which uses more
time gas consumption and associated carbon emissions were reduced by between 14% and
space and increases costs. Thanks to its modular construction and optimised dimensions, the
17%, with an average of 15% across the three sites. The average payback was only 50 weeks,
KG Top allows several functions - such as filtration and heating, heating and ventilation etc – to
with annual CO2 savings of 76 tonnes.
be housed in the same box. As well as saving space, this arrangement facilitates considerable
variation in design.
The M2G works by minimising boiler dry cycling, where the boiler fires to compensate for
standing losses rather than contributing to the building’s heating load. Crucially, M2G
A further benefit of this approach is that all units are aerodynamically optimised which, along
automatically references the thermostat set points to ensure that room and hot water
with many other energy saving features, enables specifiers to achieve efficiency levels in line
temperatures are unaffected during operation and that there is no compromise to the buildings’
with the requirements of each project. For example, units are available with plug fans and EC
comfort levels.
fans, as well as several heat recovery options including plate heat exchangers, run around coils
and thermal heat wheels.
As the pilot was carried out during the colder months of the year, when boilers were operating at
high capacity, Norwich Union expects to achieve even higher proportionate savings during
In addition, this modular approach enables flexibility right up to the end of the production process
periods of higher ambient temperature when the boilers will be subject to increased dry cycling.
and even on site, saving time and money on many projects.
Given the scale of the Norwich Union estate, Sabien’s ability to manage this £188,000 project,
KG Top AHUs also feature a new frame section with push-fit corner joints, which can be supplied
covering an area from the North of Scotland to the South West of England, was a key criterion.
for on-site assembly if required. Air tightness is achieved using high-quality, closed-pore,
“In a project of this nature a good working relationship is vital. We found Sabien to be very
disinfectant-resistant and durable plastic strips, rather than silicone seals, so they can be used in
responsive and very practical in their approach and this was a major contributor to the smooth
a wide range of demanding applications without modification.
delivery of the project,” Gregory Luxford concluded.
WALTER MEIER (CLIMATE UK) LTD
SABIEN TECHNOLOGY LTD Highlands Road, Shirley, Solihull
34 Clarendon Road, Watford, Herts WD17 1JJ
West Midlands B90 4NL
Tel: 0800 082 89 89
Tel: 0871 663 0664
Email: reduceC02@sabien-tech.co.uk
Email: uk.climate@waltermeier.com
Web: www.sabien-tech.co.uk
Web: www.waltermeier.com
Reader Reply No 24
Reader Reply No 25
ADVERTORIAL ADVERTORIAL
ANDREWS WATER HEATERS IN ANOTHER CHILLING STAR
NEW TRAVELODGE PERFORMANCE
Star Refrigeration has installed a high efficiency
Indigochiller cooling system for specialist air
Andrews Water Heaters has supplied three gas-fired storage water heaters to provide domestic
conditioning at GlaxoSmithKline’s global head office.
hot water throughout the new Travelodge hotel which forms part of the major redevelopment of
GlaxoSmithKline (GSK) is one of the world’s leading
Fort Dunlop, Birmingham. Built in 1916, the former tyre factory and warehouse was, at the time,
research-based pharmaceutical and healthcare
one of the largest in the world but, after being unoccupied for some 25 years, it had become
companies and GSK House in Brentford, Middlesex,
completely derelict. However, with funds provided by the Regional Development Agency, the site
is the company’s prestigious global headquarters.
has been converted into an iconic commercial and retail centre with hotel accommodation
Star has designed and installed an environmentally
attached.
conscious, low carbon footprint chiller solution for
Three Andrews CSC78 gas-fired storage water
GSK House. Star’s compact, packaged Indigochiller
heaters provide all domestic hot water for the
is serving a new IT data centre at the Brentford site.
ten storey Travelodge, serving bedroom
The data centre operates around the clock with a
showers and wash hand basins, bar/café
continuously high base heat load generated by a
kitchen, and staff toilets. Each unit has a
mass of computer servers. Star’s Indigochiller was chosen following a competitive tender process,
capacity of 276 litres and a recovery rate of
which highlighted a significant saving in energy, carbon emissions and lifecycle running costs.
1365 litres per hour through temperature rise of
GSK’s water-cooled Indigochiller has a total capacity of 1,000kW. The system employs water from
50°C. This extremely fast recovery rate is
the local canal to cool the condenser and maximise efficiency. Located externally, the compact
particularly suitable for a major hotel installation
packaged chiller delivers cooling to the data centre building via chilled water pipework.
and the newly installed units provide ample hot
Star’s sales director Rob Lamb says: “As a reliable, high efficiency system, Indigochiller met GSK’s
water for the 100 bedroom hotel, where demand
carbon reduction requirements and exceeded expectations with its low life cycle running costs.
for hot water peaks at specific times, whatever
“Indigochiller offers the ultimate cooling solution to forward-thinking operators. It is designed for
the level of occupancy.
unrivalled performance in process cooling and air conditioning.”
Located in a basement plant room, which formed part of the original Fort Dunlop Building,
Star worked in conjunction with the facilities management company for GSK House. The contract
Andrews’ CSC water heaters are room-sealed with a fan-assisted, balanced flue. This draws in
was one of a number of cooling projects undertaken by Star for GSK in 2008, including sites at
outside air and exhausts combustion gases via a single concentric flue, and is therefore perfect
Ware, Barnard Castle and Dungarven.
for installation in a basement location which may lack adequate ventilation.
Star’s Indigochiller is a low charge, high performance chiller for medium to large scale air
Of particular importance in commercial water heating installations of this type is the elimination
conditioning and process cooling operations. Available as an air-cooled or water-cooled unit,
of legionella bacteria. All Andrews Water Heaters have an anti-legionella program as standard
Indigochiller has capacity options ranging from 250kW to 1,500kW.
which ensures that the stored water is regularly heated to a temperature at which the bacteria
Indigochiller is highly energy efficient. Star’s research shows it uses only 60% of the energy required
cannot survive. In addition, the design of the tank precludes legionella colonisation, even with a
by a standard chiller operating on typical load and ambient profiles. This offers end users a
build-up of debris, as water at the bottom of the tank reaches at least the same temperature as
significant saving in energy and running costs.
the rest of the stored water. These features are complemented by the Andrews Hydrojet system
Indigochiller is engineered to have minimal effect on the global environment. Developed in direct
which is designed to increase turbulence, reduce sediment build-up and thermal stacking
response to f-gas regulations, the design aims to eliminate refrigerant leakage. It features bellows
resulting in enhanced delivery. The Hydrojet system therefore makes a significant contribution to
seal valves, sealed expansion valves and welded steel pipework.
the effectiveness of the water heaters’ anti-legionella functionality.
BAXI COMMERCIAL DIVISION
STAR REFRIGERATION
Wood Lane, Erdington, Birmingham B24 9QP
Thornliebank Industrial Estate, Glasgow G46 8JW
Tel: 0845 070 1055
Tel: 0141 638 7916
Email: rebecca.johnson@baxigroup.com
Email: star@star-ref.co.uk
Web: www.andrewswaterheaters.co.uk
Web: www.star-ref.co.uk
Reader Reply No 26 Reader Reply No 27
30 BUILDING SERVICES & ENVIRONMENTAL ENGINEER JUNE 2009
VISIT OUR WEBSITE: www.bsee.co.uk
Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40  |  Page 41  |  Page 42  |  Page 43  |  Page 44  |  Page 45  |  Page 46  |  Page 47  |  Page 48  |  Page 49  |  Page 50  |  Page 51  |  Page 52