综合管廊电缆舱通风量计算方法综述

Summary of Calculation Method for Ventilation of Cable Cabin in Utility Tunnel

指出电缆发热量是涉及通风与电气工程的双向问题。通过分析当前电缆发热量的计算方法以及电缆载流量计算的解析法和数值计算法,进一步明确电缆载流量和土壤“热库”效应是导致发热量和通风量无法确定的根源。综合这两个方面的影响,提出采用数值计算法求解电缆舱电缆发热量和通风量的思路。

This paper points out that the cable calorific value is a double issue involving ventilation and electrical engineering.By analyzing the calculation method of the current cable heating value and the analytical method and numerical calculation method of cable current carrying capacity,it is further clarified that the cable current carrying capacity and soil“heat storage”effect are The root cause of the inability to determine the amount of heat and ventilation.Based on the effects of these two aspects,a method of solving the calorific value and ventilation volume of cable cabin cables using numerical calculation method is proposed.