Embodied Energy of Fired Bricks: The Case of Uganda and Tanzania

Type Conference Paper - 14th International Conference on Sustainable Energy Technologies – SET 2015
Title Embodied Energy of Fired Bricks: The Case of Uganda and Tanzania
Author(s)
Publication (Day/Month/Year) 2015
URL https://www.repository.cam.ac.uk/bitstream/handle/1810/249127/Hashemi and Cruickshank SET​2015.pdf?sequence=1&isAllowed=y
Abstract
This paper evaluates the embodied energy of fired/burned bricks as one of the major construction
materials in East African countries. Production processes of bricks by artisans, and small- and medium-scale
manufacturers are explained. Embodied energy of brick walls is also calculated and the key factors in the energy
efficiency of brick kilns are discussed in detail. Low quality, high material waste and excessive energy waste
during production and handling are highlighted as the major issues associate with traditional manufacturing
processes of burned bricks in Uganda and Tanzania. The results reveal that small clamp kilns lose up to 3.5
times more energy through their cooling surfaces compared to large kilns. The results also indicate that clamp
fired bricks are up to 60% more energy intensive than generic bricks and the embodied energy of artisan brick
walls is 35% more than standard brick walls with comparable thicknesses. Improving kiln construction and
production methods, educating artisan producers, replanting tress, providing alternative renewable energy
sources, and design improvements to control fire intensity and air circulation in brick kilns are some of the
recommendations to improve the energy efficiency and mitigate the environmental impacts of fired bricks in East
African countries.

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