The Research On Hydraulic Calculational Model For The Heat-Supply Network

In the paper, a universal hydraulic calculational model for heat-supply network was established and solved with program. And a new iterative equation was well constructed through improving the existing node equation method which enhanced the astringency of calculation. The hydraulic calculation software of the heat-supply network was programmed with Visual Basic language combined with Access database, which realized the function of displaying graphical and data query. And then values of a network calculated with the developed software was compared with measured values to prove the correctness of the model, which can provide an effective basis for the safe operation and reasonable design modification of the heat-supply network.Also, the results show that the algorithm is reasonable and the convergence is perfect.In addition, the hydraulic calculation in variable working condition for a multi-heat source ring-shaped heat-supply network was presented in the paper with the software. And then we got conclusions about the operation condition of the heat-supply network through analyse the obtained correlative parameters of that pipe network such as the flow of the pipe section, velocity, head loss, friction-resistance ratio.