空调风系统管网风量平衡仿真调试(二)：构件模型与实验验证
Simulation-based method for HVAC air-side system balancing (2): Fitting models and experimental verification
摘要：
介绍了基于Modelica Buildings Library的新局部阻力构件建模过程。在一个典型风系统枝状管网上，对仿真调平结果进行了实验验证。针对局部阻力模型误差影响采用蒙特卡罗仿真方法进行了不确定性分析，以验证仿真调平结果的可靠性。结果表明，仿真调平与实际调平所得的风阀开度结果之间的平均误差为4.35%，最大误差不超过15%。即使在考虑误差的情况下，仿真调平的阀门开度仍可以使实验系统中的绝大多数末端达到平衡状态。
Abstract：
Builds the new fitting models based on Modelica Buildings Library with the correction function embedded. Balances a typical branched duct system experimentally. Then compares the dampers’ opening results determined by the simulation and the experiment with each other. At last adopts the uncertainty analysis method utilizing Monte Carlo simulation to analyse the impact of the local pressure loss coefficient (LPLC) model errors on the balancing performance. The results show that the average error between the simulated and experimental results of the dampers’ opening is 4.35%, while the maximum error is less than 15%. The simulated dampers’ opening can guarantee that most of the terminals in the example system are still balanced despite the model errors.
Keywords:building commissioning, air-side system balancing, LPLC model, Modelica modelling, uncertainty analysis