Services are renewable when the supply is replenishable from the natural
actions; rainfall, sunshine, wind, water movement. |
Some applicable technologies are described in separate pages.
This architectural practice operates in an arid environment where water movement, where there is any, is seasonal, presenting few opportunities for water wheels, turbines, jack pumps or mini-hydro installations.
Because rainfall is a scarce commodity; rain water capture, treatment and
the demand management of its use are high priority design issues in the
Commercialised renewable energy systems utilise principally wind and
Solar systems include both heating and electrical generation. Heating options are discussed on the separate page.
Electrical systems utilise photovoltaic cells of various manufacture
and power outputs to convert direct sunlight to DC electrical power. Common
types are poly-crystaline, semi-crystalline and amorphous (thin film).
Location options include:-- a separate 'power station' separate from the building where generation, storage, inversion and back up are all situated - integrated to the building with each function included in the building layout, notably photovoltaic panels integrated to roofs of appropriate pitch and orientation, storage in secure or ventilated spaces, control and inversion gear as part of the building's control centre - in residential buildings usually in the kitchen.
The renewable energy supply industry favours the former layout, including tracking system for the PV modules, and back up petrol driven generator.
This practice usually develops buildings with the renewable energy system integrated, only the wind turbine remote, and avoiding back up entirely.
Kitchen based facilities can include monitor indicators and control sub-
Storage of electricity conventionally is by battery, lead acid or gel type.
Electrical system layout issues are described in the separate page.