| 摘要 |
FIELD: the invention is designed for application in the field of heat-and-power engineering namely in finned heat-exchanging tubes of a gas air cooling apparatus. ^ SUBSTANCE: the apparatus has the body of a heat exchanging tube and an exterior finning which form in the transverse cooling flow of the exterior heat exchanging environment plots of shading of various intensity in a conditioned flatness normal to the vector of the mentioned flow of the exterior heat exchanging environment and passing through the central longitudinal axle of the tube: complete aerodynamics shading corresponding to the square of projection on the referred flatness of the unit of the length of the actual body of the tube without taking the finning into consideration and incomplete aerodynamics shading corresponding to the total square of projections on the referred flatness of the plots of finning of the unit of the length of the finned tubes limited from each side with a conditional direct line tracing along the tops of the fins minus the square of complete shading produced by the body of the tube without taking the finning into consideration. At that the connection of the squares of projections on the referred flatness of the plots of shading of various intention to their sum forms correspondently (0,30-0,80): 1 and (0,21-0,79):1 and the medium value along the radius of finning of the specific square of aerodynamics shading on the plots of projection of finning on the referred flatness on the unit of the length of the tube composes 0,08-0,55. ^ EFFECT: allows to increase thermal aerodynamics characteristics of finned heat exchanging tubes and thermal effectiveness of the apparatus in the whole and also to decrease metal consuming and the dimension of the construction of the beam of heat exchanging tubes of the gas air cooling apparatus. ^ 15 cl, 4 dwg |
