INFLUENCE OF DETERMINING FACTORS ON THE COMPACTNESS COEFFICIENT OF HEATERS

Intensification of production processes in general is a generally recognized direction of technical progress in modern times. Finding new ways to intensify processes and developing effective heat exchangers are urgent problems and are of great industrial importance. To increase the capacity of enterprises, heat exchangers must be efficient, compact, and have a small metal content. Intensification of heat exchange in some cases allows solving all these problems. It allows increasing the productivity of devices, reducing their dimensions and metal content, reducing production areas and the size of industrial buildings. This also leads to a decrease in operating costs and an increase in capital efficiency. The work determines the influence of such factors as the length of one finned tube, the bearing diameter of the tube finning and the finning ratio on the optimal design of a compressed air heater in terms of the heater compactness coefficient. The greatest influence on the compactness coefficient is the pipe finning ratio. Changing the length of one tube does not radically affect the value of the compactness coefficient. The largest values ​​of the compactness coefficient can be achieved by increasing the tube finning coefficient and reducing the length of one tube and its diameter. A method for determining the optimal heater design based on such a parameter as the compactness coefficient is presented. The obtained equation allows you to determine the influence of such factors as the length of the finned tube, the bearing diameter of the finned tube and the finning coefficient on the optimal design of the heat exchanger by the compactness coefficient. Using the developed method, you can analyze the value of the compactness coefficient in a fairly simple formulation, using various combinations of the factors listed above, and optimize the design of the heat exchanger.