ENERGY TS – IGHT?


THE HOST PROJECT The North West Construction Knowledge Hub project’s main objective is to help small and medium sized enterprises (SMEs) in the region’s construction sector to become more productive, cost-effective and efficient, whilst reducing their environmental impact.


Small firms need this knowledge to win more work, make buildings greener, create new jobs, and play their part in our journey to a new, low-carbon prosperous economy. This project will assist 200 small and medium-sized firms, safeguard 300 jobs and help create a further 300 jobs in the North West. The project’s strap line is: “less carbon, less waste, more jobs”. The project is led by the Centre for Construction Innovation North West (CCI NW) within the University of Salford’s School of the Built Environment, and is funded by the European Regional Development Fund (ERDF) and the Northwest Regional Development Agency (NWDA). The project also benefits from matched funding from its four partner organisations; the University of Central Lancashire, the University of Liverpool, Urban Vision Partnership Ltd and the national Building Research Establishment (BRE).


CONCLUSIONS


The issues of climate change means that every industry now needs to be aware of the energy it uses and look at how they can reduce their emissions. By bringing together a representative from each area of the built environment this debate was able to effectively discuss the importance of green lighting technologies and how we all can integrate them into our commercial environments. The high turn-out showed that sustainability is still very high on the agenda for construction professionals and the North West Construction Knowledge Hub project will be offering advice to such companies throughout the North West as they strive to become even more energy efficient. www.ccinw.com/services/ nw-construction-knowledge-hub/20762 Sian Astley’s blog:


http://moregeous.wordpress.com/2010/ 03/27/low-energy-led-lighting/


Andrews’ largest solar thermal water heating system for new Travelodge in Fulham


I


n Andrews Water Heaters’ largest SOLARflo water heating installation to date, the newly opened Travelodge in


Fulham has been equipped with 33 solar panels, 3 single coil pre-heat tanks and 2 ECOflo water heaters which supply domestic hot water to the 74 rooms, each of which has an en suite bath or shower room. Developed by Lombard Asset Management (Bahamas) Limited, the four storey building accommodates ground floor retail accommodation with the Travelodge located on three floors above. Renewable energy was a requirement of planning consent which would not have been granted without a contribution of 37,000 kWh of energy produced from a solar DHW system. Since at least 85-90% of the hotel’s rooms have been occupied every night since it opened, an efficient, reliable and cost effective source of hot water was essential.


The solar panels are located on the


roof, whilst the water heaters, cylinders and other solar equipment are housed in a mezzanine plant room above the retail store on the ground floor. Each of the 33 glazed flat plate collectors has an area of 2.55 square metres, giving a total collector area of 84.15 square metres. These solar collectors provide 90.8% transmission efficiency, 95% absorption efficiency and a low emission loss of only 5%. Water is preheated by the solar collectors, which are positioned to optimise their solar gain and heat is transferred to the three 1250 litre single coil cylinders. These in turn supply preheated water to the two ECOflo 380/1400 water heaters, thereby considerably reducing consumption of natural gas. The high efficiency, gas-fired, condensing storage water heaters installed each have a capacity of 380 litres and a recovery rate through 50°C of 1400 litres per hour. The SOLARflo water


heating package and ECOflo water heaters were installed by MITIE Engineering Limited who selected the SOLARflo and ECOflo equipment to meet both end user requirements and space availability in the plant room.


SUSTAINABLE FM | JUNE 2010 |35


In addition to the glazed flat plate solar collectors and non-corrosive, stainless steel solar cylinders the complete Solarflo package also includes solar controls, pump station, expansion vessels, first fill of heat transfer fluid and collector mounting accessories. Matched equipment from a single source, together with the availability of technical advice throughout the installation, is a particular benefit of the Andrews Water Heaters’ product range and after sales service.


The ECOflo high efficiency water heaters feature a low NOx pre-mix power burner that is quiet in operation, and a gross efficiency up to 98%, keeping running costs to a minimum. The units incorporate Vitraglas® silica glass lined tanks which provides protection against the corrosive effect of hot water and guarantees a longer working life. Also standard are Correx maintenance free powered anodes, which substantially reduce service time and costs.


The factory fitted Hydrojet® sediment reduction system on the cold inlet connection helps to prevent sediment build-up at the base of the tank, giving a long working life. The option for these appliances to be flued either vertically or horizontally as room sealed balanced flue appliances greatly increases siting and installation flexibility. As with all Andrews water heaters, heat input and flow are carefully regulated to produce a closely controlled water temperature and a high temperature anti-legionella program, which is essential for hotel hot water installations, is incorporated as standard. Tel: 0845 070 1055 www.andrewswaterheaters.co.uk


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