The Tracker

This model is designed for use in the equatorial zone. It has to be orientated north south. This model has the advantage that it has a parabolic reflector built into the roof. This is the most expensive solar collector that we offer but it has a very impressive level of efficiency. The system is designed to harvest solar energy from sunrise to sunset.  

The house is built around a timber frame which supports a single parabolic reflector that is able to track the sun.  The linear collector at the focal point of the reflector is mounted in such a way that it absorbs a large amount of solar energy.  Oil is passed through the collector to transport some of the thermal energy to a heat exchanger where it is transferred to water.  The hot water is then stored in insulated tanks.  The hot oil is also used to drive a Sterling engine which is connected to a generator.  The hot oil is also used to heat a cooker in the kitchen.

The windows are deeply recessed to reduce solar gain.  Thermal shutters are fitted as standard to ensure that the interior stays cool during the day.  A solar chimney draws fresh air up the stairwell.  In summer the structure is cooled by passive cooling technology.

This building has a kitchen, a large sitting room, a dining room, four bedrooms and two bathrooms.