| 摘要 |
FIELD: power engineering.SUBSTANCE: in the proposed heat exchange device its heat transfer surface is arranged in the form of water and cloth curtains installed inside folds of a shaft ventilation door, and each fold is arranged in the form of a rectangular tubular frame. At the same time onto the rectangular tubular frame of each fold equipped with a support grid having a rhombic cell, there are several layers wound from a coarse cotton cloth top-down along the grid, and the cloth is continuously soaked with cold water from an upper water-supplying tube of the door fold frame. Besides, the support grid and the curtain cloth are fixed along the entire inner contour of the frame, for instance, with a galvanised low-carbon wire with a pitch multiple to the size of the grid cell side.EFFECT: development of more favourable working conditions by cooling of a shaft ventilation stream and reduced air temperature in a mine.2 cl, 4 dwg |
