Building Environment And Construction Environment Design Audit

1718 Words7 Pages
Ivan S M Hewitt.
Introduction to Building Environment and Construction - Environment Design Audit - PART A. BUIL1166.
Luke Olsen.

Energy:

The Shard uses a CHP (combined heat and power) plant, which provides 1.131MW of electricity and 1.199MW of hot water at high efficiency to the surrounding area. The CHP system utilises waste heat for heating and hot water. This system reduces carbon emissions and also contributes to low carbon footprint of building. The Shards consumption will be more than 30% less than other comparable buildings. There are significant cost savings for CHP versus separate purchase of electricity and gas from national grid. This is an imperative factor, as for running such a large and dominant building in the City of London it is essential that costs are kept to minimum to avoid corruption. It is also recognisably a more healthy and efficient option for the environment.

(Image: Diagram of Power Plant & Combined Heat and Power Efficiency, Ref: http://www.in.gov/oed/2414.htm)

The need for air-conditioning in the Shard to eliminate an excessively heated environment from solar energy is removed by computer-controlled blinds. As extra white glass is used the G value is 0.55, meaning 55% of the solar heat gets transmitted inside the building. This isn’t appropriate for the public as they’ll suffer from the heat. However, with the blinds down there is 5% light transmittance and thus the G value drops to only 0.12, which reduces solar
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