The paper describes the design strategy and performance of an air-driven solar water and ventilation preheat system, an integral part of a CEC Demonstration Project in Glasgow; noting how performance has been compromised partly by inherent, and partly unforseen design aspects - e.g. unexpected intervention by the user. There are 12 collectors and measurements described in this paper are restricted to one which faces South-East with a tilt of 30°.

This paper describes the analysis and practical testing of a novel method of pre-heating ventilation air for buildings by sucking the air from the cavity space in an external wall. The fresh air introduced into the building is pre-heated partly by recovery of the heat escaping through the inner leaf of the wall and partly by collection of some of the solar energy incident on the outer leaf of the wall. A classroom at Napier University in which the system was installed was monitored to assess the energy and comfort benefits.

A building integrated solar collector was designed to preheat the fresh air used to ventilate a commercial building in Norway. The solar collector is a 50 meters long air chamber that runs along the ridge of the sloped roof. There is a fresh air intake at each end of the collector. An air intake to the ventilation system at the center of the collector causes fresh air to flow through the collector. The energy consumed for lighting, heating, ventilation, hot water, and plug loads has been monitored since Spring 1993.