摘要
Abstract
A heat power in Hubei limited the heat pipe network from the original"high parameter"to"low parameter"operation,resulting in a problem that the mass loss was too large,so it has very important significance to analyze the root cause.The problem was studied by numerical simulation using the wet steam model,in which the pipe sections were calibrated according to the"high parameter"of the original design,and there was no steam condensation in the simulation,and the calculated values were close to the original design values.On the other hand,the results of the simulation of the"low parameter"opera-tion showed that the resistance increased by 25%compared to the original design,and steam condensation occurred in the dry pipe,and the characteristics of"rewarming"of non-equilibrium condensation of the steam pipeline was found,which is consistent with actual test results published in the relevant literature.Increased resistance is one of the reasons for the mass loss,and increased hydrophobic loss due to condensation in the steam trunk is the second reason.Based on the results of the analysis,it is recommended that a"high pa-rameter"steam supply program be used to modify the pipe network.关键词
热力管网/管损/数值模拟/CFD/冷凝Key words
heat supply network/mass loss/numerical simulation/CFD/condensation分类
建筑与水利
