HEAT AND MASS EXCHANGE IN COMBUSTION OF A LIQUID COMBUSTIBLE MATERIAL IN A ROOM WITH AN OPEN APERTURE S. V. Puzach UDC 614.841.4 An integrated mathematical model of heat and mass exchange for fire in a room that has open apertures is suggested. The results of numerical investigation are presented for the effect of the fundamental parameters of the problem on the mean volumetric parameters of the gaseous atmosphere of the room, the temperatures of the enclosing structures, and on the parameters of the natural gas exchange with the environment through an open aperture in the case of combustion of a liquid combustible material. JEPTER7492019998 JEPTER749208