Abstract: A temperature follow control algorithm and its realization method in the heat-supply net are presented. By analyzing and predicting changes and trends of outdoor environment temperature, and considering the results of dynamic threshold learning, the control strategies of heat-supply temperature and pressure will be modified promptly and the automatic change of heat-supply temperature with outdoor environment temperature will be realized. Also, the computer control system framework is designed to realize the algorithm. Engineering practice shows that the algorithm can adjust the temperature of heat-supply net effectively, raise the quality of heat-supply and reduce energy consumption.

Key words: follow control, threshold learning, heat-supply net