RU96114118A - METHOD FOR COOLING AND CARRYING OUT MINE AIR - Google Patents

Claims (4)

A method of cooling and drying (mine) mine air, including driving air supply drifts, constructing heat and mass transfer openings, passing air through them, heating, cooling or drying air by interacting with the surrounding massif, characterized in that air from the air supply drift is supplied to heat and mass transfer workings by ventilation collector, while redistributing air in the mine shaft ventilation network, for which air is directed from the air supply drift into the heat and mass exchange workings by installing a fan-ejector in the ventilation manifold at a distance from the air supply drift, which ensures full opening of the jet within the collector towards the ventilation drift, while the fan-ejector maintains an air velocity in the air supply workings between ventilation manifolds of at least 0.15 m / s , and the surface area of the heat-exchange workings is determined from the ratio

Where
G is the flow rate of drained air, kg / h;
d ₁ - moisture content of the air entering the mine, g / kg;
d _Tr - the moisture content of the air required after processing in heat and mass transfer workings, g / kg;
β - - moisture exchange coefficient, kg / m ² mm Hg kg of dry air;
ΔP - is the average difference in partial pressures of water vapor at the wall surface and in the stream, mm. Hg;
ΔP = P _in -P _article
where P _in , P _article - respectively, the partial pressure of water vapor in the air flow and at the working wall above the surface of the hygroscopic material at the surface temperature of the array;
K ₁ - coefficient of non-uniformity of air parameters;
K ₂ - coefficient of uneven heating of the array during the period.  2. The method according to p. 1, characterized in that in the summer additionally carry out irrigation of air with liquid in heat and mass transfer workings.  3. The method according to p. 1, characterized in that the heat and mass transfer workings are additionally filled with a sorbent.  4. The method according to p. 1, characterized in that the cooling of the air is carried out using heat pipes located deep in the array and having exits-evaporators in the air supply manifolds and heat and mass transfer workings.