METHOD AND SYSTEM FOR DISTRICT HEATING OF TWO HEAT LOADS DIFFERING IN ACCUMULATING CAPACITY

摘要

The invention relates to agriculture and construction, to the field of heat supply of various national economic objects. The purpose of the invention is to improve the accuracy of maintaining the required temperature conditions of the heat consumers and the efficiency of the heat source. Frequencies of changes in fluctuations in the flow rate of the coolant going to heat the greenhouse complex 2 are determined, at which, taking into account the parameters characterizing the accumulating capacity of enclosing structures and consumer heating systems, the length and speed of the coolant in the heat network between them it is possible to use residential area 3 as a battery heat for greenhouse complex 2, due to the redistribution in time of the heat that goes into heating at a constant thermal power of the heat source 1, and only at these frequencies The oscillation of the flow rate of the heat carrier going to heat the greenhouse complex 2 is converted into temperature fluctuations of the heat carrier going to the heating of residential area 3. In stationary modes of operation of heat consumers, the controller 15 based on the signal from the sensor 17, the flow rate on the plunger of the control valve 11 supports the calculated the flow rate of the coolant supplied by the pump 13 to the supply line 7. In this case, the regulator 14, on the basis of the signal from the sensor 16, the pressure drop, will act on the plunger of the regulating valve ana 10 maintains the calculated pressure difference between the feed of the heat medium outlet 7 and 9 conductive conduits. Under unsteady weather conditions, the consumption of heat-transfer fluid for heating of the greenhouse complex 2 becomes rapidly alternating, which causes a corresponding change in the signal from the flow sensor 18. But the band-pass filter 19 transmits only those harmonics of this signal whose frequencies lie in the frequency range at which the accumulation effect is observed. In accordance with the amplitude of these signals, the regulator 15 changes the flow rate of the coolant supplied to the supply line 7. The regulator 14, stabilizing the pressure differential between the supply 7 and the discharge 9 pipelines, changes the flow of the coolant in the supply line 7, changing the bias coefficient, and Consequently, the temperature of the heat carrier entering the heating of the residential area 3. 3 Il.