Sunday, 20 November 2016

Energy Intensivity amongst Building Materials - assessment framework

Building Materials. Energy Consumption During Manufacturing - Study
Aluminium and burnt clay bricks are amongst the most energy intensive amongst building materials used in India. There is an increasing demand for energy efficient building materials. An assessment framework for quantifying the total energy expenditure or consumption has been designed. It is called "Embodied Energy". There is a lack of data on energy consumption in manufacturing of building materials in India. The study has aimed to bridge the gap in knowledge. Actual industrial data was referred. The energy consumed during production of Cement, steel, glass, coarse aggregate, aluminium and some building products like burnt clay bricks, concrete and laterite blocks, ceramic tiles, clay roofing tiles, polished granite and marble slabs were studied.
More terms: Operational Energy, Energy Assessment, Energy Rating.
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"... The study has developed a framework for assessing the energy consumed during production of building materials, in an attempt to quantifying energy expenditures from buildings. .."
"... The production of building materials also results in emission of greenhouse gases. ... "Focus of the construction industry should be on using low energy alternative building materials".
Though earlier studies have contributed in calculating the energy expenditure, they lack agreement on the method of assessment. ... current researches in energy conservation in buildings focus more on limiting "operational energy" (lighting and air conditioning energy) in buildings, without much regard to embodied energy of buildings. ..."
"... The final analysis showed that among the basic materials, aluminium is found to have higher EE (141.55 MJ/kg- 549.16 MJ/m2) than steel (32.24 MJ/kg), glass (7.88 MJ/kg) and cement (2.38-3.72 MJ/kg). On the other hand, among the masonry units, burnt clay bricks have higher EE than concrete and laterite blocks. Ceramic floor tiles are also found to have higher EE. ..." [there is a typo in the figure or data for aluminium, we at Architecture News India feel ... MJ per square metre? - not sure.]
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Find this at http://articles.economictimes.indiatimes.com/2014-12-18/news/57196225_1_energy-conservation-energy-consumption-building-codes .
[Weights are mentioned as a criterion for the unit (MJ per kg), what about the volume? ... just a question from us at Architecture News India. Perhaps it is to do with one standard reference, .. and then collating or translating will be needed wherever?... We may amend this statement.]

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