AWARDS SPECIAL BUILDING PERFORMANCE Passive (Energy Related) Product of the Year Aerogel Solar Collector
The challenge Technology experts were challenged to devise new energy saving solutions, as part of the £17m Retrofi t for the Future programme aimed at kick-starting retrofi tting in social housing stock.
The response Developed by Dr Mark Dowson, an engineering doctorate researcher sponsored by Brunel University, and by Buro Happold engineers, the Aerogel Solar Collector is the UK’s fi rst fl at plate solar air heater incorporating translucent granular aerogel insulation in the cover. It effectively blocks heat
transfer by convection, conduction and long-wave thermal radiation. A prototype was installed on a 1960s end- terrace house. The cover thickness was selected to achieve a Passivhaus U-value below 0.8 W/m2K.
The results Prototype testing has registered peak outlet temperatures of up to 45ºC during cold, sunny conditions. This allowed preheating of the house’s fresh air supply up to 30ºC, in turn providing internal temperatures of 21ºC to 22ºC without auxiliary heating. Payback is predicted to be as low as 4.5 years.
Energy-Using Product Award Lighting Platform
The challenge Around 17% of all electricity consumed in the UK is consumed by commercial buildings. Of this, approximately 25% is used for lighting systems. The potential exists to make cost savings and reduce carbon footprints through the introduction of more sustainable lighting systems.
The response Redwood Systems has developed a low voltage intelligent lighting control that powers and controls the lights through a single category cable. This means a single integrated system replaces three separate systems to power, control and measure lighting output, making use of sensors at every fi xture to collect data.
26 CIBSE Journal March 2013 The centralised power system, known
as the Redwood Engine, is the ‘brains’ of the platform, converting alternating current (AC) power to safe, effi cient direct current (DC) power via a low voltage network cable.
The results Clients average 75% energy savings through an effi cient power system. The lighting control enables energy saving techniques, such as tailored occupancy, per-fi xture daylight harvesting and ‘follow me’ lighting. Benefi ts include reduced installation
costs and an integrated building intelligence system that allows heating and cooling to be turned down or off when people are not around.
Sponsored by:
Sustainability credits
Redwood Systems innovative building-performance lighting platform contributes to sustainability credits for LEED through: Optimised energy performance Enhanced commissioning Enhanced measurement and verifi cation Controllability of systems – lighting, thermal comfort verifi cation, and innovation in design
www.cibsejournal.com Sponsored by:
We are really excited to have won this CIBSE award and are especially grateful for the judges’ comments regarding the quality of research and novelty of the idea
2013 Winner
2013 Winner
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