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The integration of photovoltaics into building structures means that facilities managers are increasingly having to look at energy modelling and resource utilisation issues. fmME takes a closer look at this latest trend.
Energy modelling is a critical component of building design at the concept stage. MEP engineers are playing an increasingly vital role in determining the energy efficiency of new building projects, which is necessary to ensure their compliance with the soon-to-be-regulated ‘green’ building ethos, as well as promoting their long-term sustainability.
Apart from the regulatory perspective, many think such an approach also encompasses an ethical or moral responsibility, meaning the ‘feel good’ factor of renewable energy.
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PV installations throughput the world reached a record high of 5,95 GW in 2008, representing a staggering growth of 110% over the previous year, according to market research from Solarbuzz of the US.
A total of 81 countries contributed to this total market, lead by Europe, Spain, Germany and Korea. On the supply side, world solar cell production achieved a consolidated figure of 6,85 GW in 2008, up significantly from 3,44 GW a year earlier.
Overall capacity utilisation rose to 67% in 2008, while thin-film production (the latest efficiency advance in PV panel technology) rose a phenomenal 123% increase in 2008.
When it comes to solar power in the region, many think of vast solar energy ‘farms’ spread across the deserts of the UAE, taking advantage of both the region’s high insolation factor and its availability of large tracts of open space.
This is quite removed from the normal electro-mechanical and plumbing ambit of a typical MEP contractor. But there is an aspect of PV technology dovetailing with the construction industry that offers huge scope for the MEP sector.
Facing the change
Known as Building-Integrated Photovoltaics (BIPV), pundits claim this is poised to change the face of construction, energy and urban planning in the coming decade.
The Department of Energy in the US, for example, has estimated that BIPV technology has the potential to generate half of its electricity needs.
This goal seems increasingly achievable, as solar energy is expected to attain ‘grid parity’ by 2015, meaning it will be able to supply electricity as cost-effectively, or even more cheaply, than electricity produced by conventional means such as coal-fired power stations.
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