Calculation of soil temperature at the intersection of the heating line of the underground gasket and gas pipeline taking into account real operating conditions

¹ Kazan State University of Architecture and Engineering, 420043, Zelenaya st., 1, Kazan, Russia
² Kazan State Power Engineering University, 420066, Krasnoselskaya st., Kazan, Russia
³ Kazan National Research Technological University, 420015, Karl Marks st., Kazan, Russia

^* Corresponding author: akhmerovaag@mail.ru

Abstract

Distances from the insulation shell of pipelines duringchannelless laying to utility networks are recommended by regulatory documents, but in real conditions it is not always possible to comply with these parameters. Calculations have been made to verify that the gas pipeline can be laid next to the supply pipeline of the heating network in the problematic section of the installation where these restrictions are not met. The soil temperature on the wall of the gas pipeline case is determined to exclude the heating condition of polyethylene pipes above 40 °C for the entire period of operation. Soil temperatures at the intersection of the heating line and the gas pipeline were determined taking into account the real operating conditions of the district heating networks, the peculiarities of regulating the coolant parameters of the Russian heat systems and the state of thermal insulation.