Life cycle efficiency ratio: A new performance indicator for a life cycle driven approach to evaluate the potential of ventilative cooling and thermal inertia

Life cycle efficiency ratio: A new performance indicator for a life cycle driven approach to... •The effects of TI and ventilative cooling on the overheating risk in offices have been analyzed with a multidimensional approach.•A new indicator, the life cycle efficiency ratio (LCER), has been introduced, this parameter expressing the ratio between the embodied impacts and the operative savings induced by a particular scenario.•Natural ventilation reduces cooling needs ranges from 16% (low TI) up to more than 95% (high TI).•Mechanical ventilation based on temperature gradients is three times more efficient in reducing cooling needs than mechanical ventilation based on time schedule.•On LCA, when traditional cement-based materials are used, high TI levels don’t have any benefits (embodied impacts higher than operative savings, translated into a low LCER nonetheless middle levels maximize TI efficiency as passive cooling strategy. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Energy and Buildings Elsevier

Life cycle efficiency ratio: A new performance indicator for a life cycle driven approach to evaluate the potential of ventilative cooling and thermal inertia

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Publisher
Elsevier
Copyright
Copyright © 2017 Elsevier B.V.
ISSN
0378-7788
eISSN
1872-6178
D.O.I.
10.1016/j.enbuild.2017.12.010
Publisher site
See Article on Publisher Site

Abstract

•The effects of TI and ventilative cooling on the overheating risk in offices have been analyzed with a multidimensional approach.•A new indicator, the life cycle efficiency ratio (LCER), has been introduced, this parameter expressing the ratio between the embodied impacts and the operative savings induced by a particular scenario.•Natural ventilation reduces cooling needs ranges from 16% (low TI) up to more than 95% (high TI).•Mechanical ventilation based on temperature gradients is three times more efficient in reducing cooling needs than mechanical ventilation based on time schedule.•On LCA, when traditional cement-based materials are used, high TI levels don’t have any benefits (embodied impacts higher than operative savings, translated into a low LCER nonetheless middle levels maximize TI efficiency as passive cooling strategy.

Journal

Energy and BuildingsElsevier

Published: Mar 15, 2018

References

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