SUPPLY CHAIN
Rainwater harvesting - Marley Waterloc
the Marley Waterloc is a way of providing a installation. Suitable for pedestrian and lightly
number of bespoke infiltration, attenuation or trafficked areas - the cells can be configured
rainwater harvesting solutions. the Waterloc to form a stormwater storage unit to suit the
can help save up to 1,600 litres of water per capacity required, soil conditions and the land
week and reduce household consumption by as area available.
much as 50% simply by collecting, storing and the system can be installed underground
re-using run-off roof rainwater at source. eliminating the prospect of creating a visual
Accolade
as well as reducing the use of metered water, eye-sore, with the water entering the storage.
the Waterloc system combines infiltration unit from an inlet chamber, which can be underfloor heating
(soakaway) with recycling to help reduce customised to sit level with the grounds surface underfloor heating solutions use heat
rainwater demand on drainage systems thereby the inlet chamber incorporates an infiltration conduction and radiant heat to keep the
alleviating the problems associated with both device known as the Marley Salt trap, which temperature inside a building comfortable,
water shortage or flooding. collects leaves, grit and gravel before it passes unlike forced air heating which is reliant
its design uses columns of extruded the partially treated water into a storage unit on convection. Systems can be installed
polypropylene honeycomb structure, already ready for re-use. under either wooden or concrete floors,
widely used in stormwater storage applications, the system can also be fitted with an outlet as well as all types of floor covering. types
in combination with injection moulded grids that pipe for use as an outside tap to water the of installation vary from circulating hot
enable rapid dispersion of water throughout the garden or wash a car. water through a network of pipes below the
floor, to heated mats laid below the floor
covering.
Velux Sun Tube
the accolade maintains a controlled,
Sun tubes offer a means of bringing Stage three: light is diffused before entering even temperature using less power than
natural light to parts of a building that, the building alternative systems thanks to the metallic
due to a lack of nearby windows, are Velux Sun Tube benefits: ribbon technology. this uses thin strips of
otherwise dark and unwelcoming. ideal for n aesthetically subtle, a sun tube can an amorphous metal alloy inserted directly
windowless rooms - especially en suites, be installed to blend with a buildings beneath a flooring surface to provide a
office hallways and room extensions, a sun appearance response time of three to four minutes
tube essentially reduces the reliance on n the flexible nature of the tunnel ensures to thermostatic control adjustments,
artificial light and offers long-term savings it can be practically fitted around roof eliminating wasted heat.
on electricity costs. obscurities, improving the efficiency and the system turns the floor into a giant,
How it works: speed of the installation process, which low temperature radiant heat source with
Stage one: light is absorbed through a normally takes just 2-3 hours negligible heat loss through the ceilings and
window n Suitable for flat roof structures, sun tubes windows - reducing Co
2 emissions as no
Stage two: light travels down a highly can also be installed on a slate or tile roof carbon dioxide is locally produced through
reflective micro silver coated flexible tunnel with a pitch ranging from 15- 60 degrees. the operation of a gas or oil boiler.
Duraflex windows
Air source heat pumps
the Duraflex range of windows is manufactured from PolyVinyl Chloride - unplasticised
(PVCu), a highly recyclable material which may be recycled 10 times and more without
- RM Solar Air source
significant loss of integrity and structure. a recent study by the bRe (building Research
used extensively in Scandinavia and
establishment) also concluded that PVCu windows had a life expectancy of at least 35 years,
increasingly in the uK, air source heat
reducing the requirements for costly replacements.
pumps heat air rather than a liquid.
Further characteristics:
electrically powered, the pumps consist
n bRe Green Guide has awarded PVCu windows an a rating for domestic applications and
of a compressor and two matched heat
an a+ for commercial based on a cradle to the grave assessment
exchangers. they are designed to provide
n the Duraflex window range can be customised to a wood grain or white finish.
space heating through water systems,
either radiators or underfloor, by taking
external air, which absorbs and stores heat
from the sun.
an air source heat pump can extract
considerable heat from temperatures as
low as -20 degrees celsius. the system can
be easily installed in new build or retro-fitted
into existing properties as there is no need
for any excavations. all the compressor
requires is that it is located in a position
that receives sufficient outside air flow.
the efficiency of the unit means that the
output heat energy it generates can be up
to four times the electrical input power,
helping to reduce energy costs and a
building’s carbon footprint.
SuStainable SolutionS December/January 2009 33
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