Digital control systems for passive solar buildings
Three control system designs for passive solar buildings (offices and dwellings) have been developed. All three systems use an identification process of the behaviour of the building based on a parameter estimator. Two systems use a weather predictor for optimisation purposes. The three control systems have been tested with a simulator, which consists of a simple solar system with controllable awning, ventilation (mechanical and natural), heating and artificial lighting and includes various building types and weather data sets. These control systems are compared with a simple control system. A wide range of test runs has been made, to determine the best control strategy, and also to assess the design of the passive system itself. The study showed that a minimum configuration for a passive system consists of a high inertia building and windows with south orientation, equipped with very good sun protecting devices in the summer and an insulating shutter in the winter. Control of these devices must be implemented in an improved version of the control system. The window size is determined more by illumination need than by energy saving considerations and depends very much on local conditions. The control systems show a robust and stable behaviour and the parameter estimator works satisfactorily. A weather predictor is essential for maintaining optimal indoor climate conditions with limited auxiliary heating power.
Bibliographic Reference: EUR 12951 EN (1990) 98 pp., MF, ECU 4
Record Number: 199011042 / Last updated on: 1994-12-01
Original language: en
Available languages: en