Figure: Saw-tooth roof form

Text description of this figure

• Summer sun excluded by large roof overhangs.
• Winter sun warms thermal mass of floor slabs.
• Artificial lights are low energy fittings linked to daylight and presence sensors.
• Moat is used to collect and store rainwater from the roof which is used to supply toilet cisterns.
• Low level incoming air is cooled and humidified by moat.
• Clerestory windows allow daylight and ventilation deep into the plan.
• Hot air rises up the inclined roof and is exhausted through high level windows.
• Hot air above light fittings is drawn off and extracted at high level.
• Hot air is exhausted at high level.
• Underslab pipe work provides heating/cooling from super efficient heat pump which draws energy from the aquifiers.
• Thermal mass of exposed concrete floor stabilises internal temperatures.
• High than code levels of insulation reduce heat losses in winter.