Hydraulic transient modeling and analysis of the district heating network

Abstract The hydraulic transients are obvious during the operation and adjustment of large-scale district heating (DH) network. Hydraulic transient modeling simulation methods can provide basis for efficient DH In this paper, two models, distributed parameter model (DPM) lumped (LPM), were established Efficient numerical algorithms presented models. proposed DPM LPM both applied to a network simulate analyze caused by valve pump operations. Results indicate that with increase distance from location, time flow rate pressure gets longer. As duration decreases, increases. Comparison performances between models indicates capture high-frequency subtly. With decrease duration, more severe will occur. However, only average fluctuations be described LPM. computation is shorter than because vectorizable calculation procedure less data record, since neglects waves fluid compressibility.