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, which is based on a nonlinear programming algorithm and comprises the followingsteps: 1) calibrating pipe network resistance, heat user resistance, an electric valve characteristic curve and a water pump characteristic curve of the centralized heating pipe network system, wherein the pipe network and the heat user resistance are calibrated by combining a pipe network design drawing, a pressure gauge and a heat meter actual measurement parameter; according to the electric valve characteristic curve, under a certain water supply pressure, a fitting characteristic curve is obtained by measuring a plurality of flow and valve opening corresponding values; according to the water pump characteristic curve, pipe network resistance is adjusted by closing an electric valve, and a fitting characteristic curve is obtained by measuring a plurality of total water supply and returnflows and pressure differences; 2) establishing a hydraulic equilibrium equation; and 3) taking minimum water pump conveying energy consumption as a target, and taking electric valve resistance, thermal inlet flow and total water supply and return pressure difference as constraint variables.

Description

technical field [0001] The invention relates to the field of central heating, in particular to the optimization of the hydraulic balance of the heating pipe network, and realizes the dynamic adjustment with the change of the terminal load, and realizes the goal of minimum energy consumption for water pump transportation. Background technique [0002] Hydraulic imbalance is one of the most common problems in central heating systems. Since 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 the traditional pipe network to eliminate the gap between the pipe networks. The hydraulic imbalance makes the partial end deviate from the design requirements, resulting in uneven heating and cooling, and wastes a lot of heat consumption. Improving the hydraulic imbalance of the terminal 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

Images