A method for realizing dynamic hydraulic optimization of central heating pipe network system

Abstract

The invention discloses a method for realizing dynamic hydraulic optimization of a central heating pipe network system. Based on a nonlinear programming algorithm, the method includes the following steps: 1) The characteristic curve of the pipe network resistance, heat user resistance and electric valve of the central heating pipe network system and the pump characteristic curve for calibration; among them, the pipe network and heat user resistance are calibrated by combining the pipe network design drawing, pressure gauge and heat meter measured parameters; the electric valve characteristic curve is measured by measuring several flow rates and valves under a certain water supply pressure The corresponding value of the opening degree is used to obtain the fitting characteristic curve; the water pump characteristic curve is adjusted by closing the electric valve to adjust the resistance of the pipe network, and the fitting characteristic curve is obtained by measuring several total supply and return water flow and pressure difference; 2) Establish a hydraulic balance equation; 3) The goal is to minimize the energy consumption of the pump, and the resistance of the electric valve, the thermal inlet flow, and the total pressure difference between the supply and return water are used as constraints.

Description

technical field [0001] The invention relates to the field of central heating, in particular to the optimization of hydraulic balance of a heating pipe network, and realizes dynamic adjustment with terminal load changes, and achieves the goal of minimizing the energy consumption of water pump transportation. Background technique [0002] Hydraulic imbalance is one of the most common problems in central heating systems. Because the actual operating conditions of the heating pipe network are affected by many aspects such as manufacturing and construction, working conditions, and the environment, it is difficult for traditional pipe networks to eliminate the friction between pipe networks. The hydraulic imbalance makes the partial end deviate from the design requirements, resulting in the phenomenon of uneven cooling and heating, and wastes a lot of heat consumption. Improving the hydraulic imbalance of the end pipe network is an important condition to ensure the good operation ...

AI Technical Summary

Problems solved by technology

The above means of hydraulic balance all adopt the method of static adjustment, which is also the method of hydraulic adjustment for most heating systems, but the disadvantage is that it cannot be dynamically adjusted according to load changes, and local hydraulic conditions often cause overall changes. hydraulic imbalance

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