CONTROL ALGORITHMS FOR THERMAL PROCESSES IN HEATED BUILDINGS MODEL AND SIMULATION INVESTIGATIONS

摘要

The paper deals with the analysis heating process control algorithms in building objects. General principles of control applied in heating systems of buildings supplied from external heat sources are described. The type of the adopted control has an important bearing on the quantity of heat used for the purposes of central heating and hot water supply. In view of high costs of heat energy this problem has important practical significance. At the moment there is dearth of research work, which could help analyzing these problems. This stems from appreciable complexity of the processes, which have to be assessed in dynamic states, as they are comprising the problems from many various domains such as building physics, heat exchange, heat engineering, heating, automatic control, numerical methods, information science etc. The basis for research is formed by adequate simulation models describing heat processes in buildings and control algorithms. The presented paper describes the simulation model, which makes possible the investigations allowing to find suitable control algorithms for the given heating processes. The investigations carried out prove that the quality of control algorithm has an appreciable effect on the amount heat used in a building. Depending on the adopted solution, the differences could amount even to more than abt. 15% yearly.