FIELD: power engineering, in particular, devices for utilization of heat of exhaust gases of devices mainly used for heating air with combustion products, coming from compressor of gas-turbine plant of gas flow device at compressor stations of main gas pipeline.
SUBSTANCE: in heat-exchange block of regenerative air heater, preferably block-sectioned, bank of heat exchange pipes is made four-drive and multi-row and has heat exchange pipes, positioned primarily in horizontal rows with vertical and horizontal gaps between each other filled with distancing elements, while geometrical characteristics of heat-exchange pipes of bank are decided on dependently on coefficients, first one of which concerns relation of volume, filled with heat exchange pipes in block, to common inner volume of heat exchange block, and second coefficient - relation of length of inner surface of heat exchange pipe to area of surface heat exchange, while relation of total length of heat exchange pipes, enveloped in transverse direction, to total length of inner areas of all heat exchange pipes of bank is 0,78-0,92, relation of sum of lengths of portions of heat exchange pipes, enveloped in longitudinal direction, to total length of inner areas of all pipes of bank is 0,05-0,18, and relation of sum of lengths of bend portions to total length of inner areas of all pipes of bank is 0,01-0,03.
EFFECT: optimal character of enveloping of four-drive multi-row bank of heat-exchange pipes by high-temperature combustion products, said pipes being filled with air, heated as a result of device operation.
10 cl, 4 dwg
