FIELD: power engineering, in particular, devices for utilization of heat of gases exhausted by apparatuses, primarily for heating air by combustion products, coming from compressor of gas-turbine plant of gas flow apparatus at compressor stations of main gas pipelines.
SUBSTANCE: pipe row of regenerative air heater is made four-drive, while length of inner area of pipe in row is selected dependently on geometrical parameters of pipes, composing pipe row, and on step between longitudinal axes of adjacent pipes of rectilinear branches at different portions of rows, while step and length of inner area of heat exchange pipes of minimal and maximal length is selected in proposed range dependently on pipe diameter. Position of heat exchange pipes in row is selected with fulfilling of criterion, in accordance to which relation of area of inner surface of heat exchange pipes on rectilinear branches of row, positioned perpendicularly to flow of substance to be cooled, to volume, contoured by conditional planes, touching external surfaces of heat exchange pipes of row, with consideration of spaces between pipes, is 0,02-0,12 m-1.
EFFECT: higher heat exchange efficiency during enveloping by high temperature combustion products of one-packet four drive row of heat exchange pipes, filled with air to be heated, due to use of special relations, considering geometrical parameters of pipe row, including those for heat exchange pipes.
8 cl, 4 dwg, 2 tbl, 2 ex
