Rationale for New Formulas for Determining the Speed of Heat Carriers, Recovery Coefficients and Efficiency of Heat Exchangers of the Heat Supply System

International Conference on Innovations and Prospects of Development of Mining Machinery and Electrical Engineering 2018

矿业工程;电工学

Chekardovsky, S.M.^1 ; Mironov, V.V.^1 ; Guseva, K.P.^1 ; Bocharova, A.A.^2

Federal State Budget Educational Institution of Higher Education, Industrial University of Tyumen, Volodarskogo Street, 38, Tyumen

625000, Russia^1

Federal State Budgetary Educational Institution of Higher Education, Northern Trans-Ural State Agricultural University, Respubliki Street, 7, Tyumen

625003, Russia^2

关键词: Approximate calculations;    Design calculations;    Heat supply systems;    Identical conditions;    Operational monitoring;    Performance characteristics;    Plate heat exchangers;    Recovery coefficients;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/194/6/062007/pdf
DOI  :  10.1088/1755-1315/194/6/062007

来源: IOP

【 摘 要 】

The article presents new formulas for calculating heat carriers' velocities, recovery factors and efficiency of heat exchangers in the heat supply system. The formulas have been obtained after a profound analysis of literature in the field of design calculations of heat exchangers in the heat supply system and mathematical transformations. Approximate calculations based on reliable data of famous scientists were made in order to determine the validity of new formulas. The results of the calculation of the error of the average velocity of heating fluid and heated coolants were processed. The formulas can be used to design plate devices, as well as for operational monitoring of parameters in order to determine the operating modes and efficiency of heat exchangers. The formula for determining the coefficient of recovery of tubular and plate heat exchangers has been obtained as a result of an analysis of literature in the field of calculating the regenerators of gas turbine plants and mathematical transformations. By monitoring the change in performance characteristics over time, it is possible to predict deterioration in the condition of heat exchangers, provided that the tests are performed under identical conditions.