The Influence of Developed Heat Exchange Surfaces on the Geometric Dimensions of Heat Exchangers
Year: 2023
Type: article
Abstract: The design of heaters is affected by many factors, and the importance of each of them can vary greatly. Intensification of heat exchange is always of great importance for all industries and technologies. The design of heat exchange equipment is subject to high requirements related to the reduction of weight, volume, etc. The optimal design of the developed surface is determined by the values of the heat transfer coefficients from the hot coolant to the tube wall and from the wall to the cold coolant. One of the main characteristics of heat exchangers is the volume occupied by them. Most often, there are restrictions on the occupied volume of the device, or on its different geometric dimensions, which is caused by the layout of the equipment or consumer objects. One of the main criteria for heat exchanger optimization is the ratio of heat transfer to the power used to overcome the resistance of the heat carrier. The disadvantage of this criterion is that the fluid resistance is minimized by increasing the cross-section of the coolant channel, which leads to an increase in the volume of the heat exchanger, which in turn cannot be significantly increased. The purpose of the work is to determine the influence of the finning ratio, the bearing diameter of the finning of the tube and the length of one finned tube as the main factors on the geometric volume of the heat exchanger. The paper determines the influence of the pipe finning coefficient, the bearing diameter of the fins and the length of one tube on the total geometric volume of the heat exchanger. The bearing diameter of the pipe has the greatest influence on the total volume of the heat exchanger. The effect of the fin ratio is secondary to the volume of the heat exchanger, and such a factor as the length of one tube has the least effect on the desired function. It is possible to achieve a reduction in the total volume of the device by reducing the length of one tube across the flow of the coolant, the fin ratio and the supporting diameter of the tube. Using the developed methodology, it is possible to design a heat exchanger with the required geometric volume.
Authors: Klimov Roman, Kriukovska Olha, Lusta Danil
Institution: Dniprovsk State Technical University
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4390194044