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First name, Middle name, Last name, Scientific degree, Scientific rank, Current position. Full and brief name of the organization, The organization address.Averkin A.G. – candidate of technical sciences, professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Eremkin A.I. – doctor of technical sciences, professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Rodionov Yu.V. – doctor of technical sciences, professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Tarakanov O.V. – doctor of technical sciences, professor E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it Penza State University of Architecture and Construction The organization address: 440028, Russia, Penza, G. Titova st., 28
Title of the articleExperimental research of convective heat transfer at cooling air flow of different relative humidity in the finned coil
Abstract.The article deals with the results of experimental studies on the effect of relative humidity on the convective heat transfer in the cooling air flow. The laboratory unit is described to create the air flows with a certain content of water vapor in the air current. It is proved that in addition to the well-known factors, enhance finned heat transfer at the boundary surface – air flow mass velocity of the air outside the tube, the linear velocity of the cooling water circulating inside the heat exchange there tubes, is the content of water vapor in the air, in its relative humidity that has a significant influence on the heat transfer coefficient. The mathematical method of experiment planning is applied, the plan of the second-order Box-3 is implemented. The mathematical model (regression equation) describing the convective heat transfer in a finned coil surface is developed. The experimental results have allowed us to estimate the quantitative contribution of the described process parameters and conclude on the effect of summation of these factors under the conditions of forced convective heat transfer.
Keywords.Experiment, finned heat exchanger, the heat transfer coefficient, mass air flow rate, relative humidity, water velocity, the regression equation.
For citations:Averkin A.G., Eremkin A.I., Rodionov Yu.V., Tarakanov O.V. Experimental research of convective heat transfer at cooling air flow of different relative humidity in the finned coil // Izvestiya KGASU. 2012. №1(19) P.74-80.


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