Modelling of heat losses in UCG under laboratory conditions and in situ

The underground coal gasification (UCG) is the process, which can be attractive from environmental and economic aspect and is able to have a wide utilization in the future. This technology is less expensive than conventional mining. It is appropriate to construct a physical model of the gasifier in the geometrical similarity for research and good analysis of UCG process under laboratory conditions. The heat losses in the process realized by the gasifier must correspond to heat losses in real seam. The paper presents a comparison study of the heat losses on the gasifier and in the real seam. The result of this study is the proposal of thermal isolation of the gasifier.