管网质调节运行时散热器的动态热过程分析

在区域供热系统设计中，通常采用概算指标法确定热负荷，以作为末端用户散热器的选择依据，很少涉及供热房间的动态热过程。本文考虑供热系统末端散热器的实际换热过程，将散热器划分多个控制体建立动态热量交换模型，并进行数值模拟和相应的实验验证。通过输入管网供热参数和室外气候条件，模拟室内环境温度的变化，并实时反馈供热管网的回水温度。由此探讨供暖房间与供热系统之间相关参数的关联关系，为实现管网实时控制提供末端用户的热动态参数。

Thermodynamical Analysis on Operating Radiator under the Qualitative Regulation Condition

During the district heating system design, the adopt of estimated design load is a common method to ensure thermal load that can be used as a basis for radiator selection, while the dynamical heat transfer process is rarely considered. In this paper, the practical heat transfer process in the terminal of heating system is more interested, then, developed a thermodynamic model of the radiator, and did corresponding experiments to verify the model. In the modeling methodology used, the radiator with its cover was divided into several control volumes. Through inputting local meteorological parameter and heating system parameters to simulate the indoor thermal circumstance and return water temperature. Thus, to identify the relationship between the related parameters which are exist in heating room and the system, to provide relevant thermal dynamic information to terminal user for fulfill the pipe network monitoring.