基于负荷比值的计量供热间联网固定供回水温差量调节方程

Equation of Flow Adjustment with Fixing Difference in Temperature between Supply and Return Water of Indirect-Connected System with Heat Metering Based on Heat Load Ratio

为了满足计量供热系统热源超量调节和超前调节的要求,避免自主调节用户加热过程的热滞后,实现热源的及时、足量、节能运行,引入了同类用户及其室内设计热负荷所占总设计热负荷的逐时负荷比值,建立了计量供热系统间联网一次网采用固定供回水温差的量调节、二次网采用主动质调节—被动量调节时的运行调节方程。并通过实例计算证实了在逐时负荷比值确定后,虽然用户自主调节随机性很大,但仍然能够确定供热系统在调节状态下的供、回水温度及其流量,并预测自主调节状态下的逐时供热量。

In order to meet the requirement of heat source＇s oversize adjustment and ahead schedule adjustment with heat metering systems, to avoid the heating process＇s thermo lag in heat consumers＇ independent adjustments, and to realize timely, enough and saving energy operation, the article introduces the hourly load ratio of the homogeneous heat consumers and their indoor design heat load to the total design heat load, then sets up the operating adjustment equations of the primary piping network with flow adjustment of fixing the difference between the supply and return water temperatures and secondary piping network with active quality adjustment and passive flow adjustment in indirect-connected system. Through practical calculation it demonstrates that though the heat consumers＇ independent adjustments are random greatly we still can decide the temperatures of supply and return water and their flow rates in adjustment condition of heating system after deciding the hourly load ratio, and foresee the hourly energy requirement for heating in the situation of the heat consumers＇ independent adjustment.