Abstract:

The heat load calculation of the refuge chamber in the emergency system is more complex, and different initial temperatures within the refuge chamber can product great influence to the changes of the average heat load. For the unsteady heat transfer problem of refuge chamber, the paper carried a full-size simulation and finite element analysis to the heat transfer characteristics. The temperature rule of the refuge chamber of 20 people was reached. One- dimensional unsteady heat transfer calculation formula of temperature field of chamber wall was obtained by fitting, and was verified with experimental data. The paper provide a theoretical basis for the refuge chamber heat load calculation and provide a reference for the calculation of configuring cooling system of the refuge chamber for the different initial temperatures.

Key words: coal mine, refuge chamber, heat load, unsteady state heat transfer