LEDs are most cost effective whenever there is a need for 24hr-12hr lighting. In simple terms, this assumption is based on the 50,000 hours of usage guarantee that leading LED manufacturers give for their products.
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When is the use of LED’s most cost effective?
Saturday, January 30th, 2010What is thermal mass?
Tuesday, August 25th, 2009Thermal mass, in the most general sense, describes the ability of any material to store heat.
For material to providea useful level of thermal mass, a combination of three basic properties is required:
- High specific heat capacity-To maximise the heat that can be stored per kg of material.
Benefits of designing with thermal mass?
Tuesday, August 25th, 2009Exploiting thermal mass on a year-round basis is not difficult, but does require consideration at the outset of the design process when requirements for the building form, fabric and orientation are being established. Providing this is done sympathetically, a more passive approach to design can realise benefits which include:
What is Passive Solar Design (PSD)?
Tuesday, August 25th, 2009PSD basically optimises a building’s form, fabric, and orientation to maximise solar gain from autumn to spring, whilst minimising it during the warmer part of the summer. At the same time, daylighting is maximised at all times.
What is Bio Energy?
Tuesday, August 25th, 2009Bioenergy is the energy produced from biomass. Biomass is available from materials derived from biological sources. Biomass is any organic material which has stored sunlight in the form of chemical energy. As a fuel it may include wood., wood waste, straw, manure, sugar cane, and many other products from a variety of agricultural processes. Energy from biomass is produced by burning organic matter. Biomass is the solid form of ‘bioenergy’, but liquid fuels can also be generated from plant matter and this is referred to as ‘biofuel’. Biomass is carbon-based so when used as a fuel it also generates carbon emissions. However, the carbon that is released during combustion is equivalent to the amount that was absorbed during growth, and so the technology is carbon-neutral.
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