Simulation of One of Possible Method of Control of Heat Output of Hot-Water Piping for Heat Supply to District Heating System: Basic Method of Control

The paper deals with the simulation verification of one of possible approaches to heat output control of hot-water piping for heat supply to wide district heating system. It is described algorithm of the so called qualitative-quantitative control method of heat output control with utilization of prediction of daily diagram of heat supply in hot-water piping systems of district heating. Designed algorithm enables elimination of the influence of transport delay between the source of heat and heat consumption of relatively concentrated consumers. Distance between the source of heat and consumers is in the rank of kilometres. Transport delay depends on flow speed of heat-carrying medium (hot water) and on the length of feeder piping. This method of hot-water piping output control consists in simultaneous and continuous acting of two variables influencing the transferred heat output and in using the prediction of required heat output in a specific locality.