Open AccessDETERMINATION OF THE AVERAGE WALL TEMPERATURE OF THE PLATE IN A RECUPERATIVE HEAT EXCHANGER WITH A CORRUGATED MESH INSERT
Author(s) -
Arman B. Kostuganov,
Vitaly V. Demidochkin
Publication year - 2021
Publication title -
gradostroitelʹstvo i arhitektura
Language(s) - English
Resource type - Journals
eISSN - 2782-2109
pISSN - 2542-0151
DOI - 10.17673/vestnik.2021.01.6
Subject(s) - heat exchanger , ntu method , nusselt number , plate heat exchanger , heat transfer , thermodynamics , mechanics , plate fin heat exchanger , concentric tube heat exchanger , heat spreader , micro heat exchanger , heat transfer coefficient , materials science , heat capacity rate , chemistry , physics , turbulence , reynolds number
This article discusses the issue of determining the value the average wall temperature of the plate of a recuperative heat exchanger type “air-to-air” with a corrugated mesh insert based on the results processing the data of a physical experiment to determine the thermohydraulic characteristics such heat exchange surfaces. It has been established that the temperature fi eld of heat exchange surfaces of this type is nonuniform, depends on the conditions of heat exchange and hydraulic regimes of air fl ow. Therefore, the adoption of the arithmetic means value of the measured surface temperatures as the calculated average temperature of the heat exchanger wall entails signifi cant errors in the subsequent processing of experimental data and fi nal the values of the heat transfer coeffi cients, the values the Nusselt criterion and the criterion equations of heat transfer. It is proposed to determine the average value the wall temperature of the heat exchanger based on the results of measurements the wall’s temperatures, the estimate of the coordinates the center of distribution the results of measurements the wall temperatures, the equations of heat balance and heat transfer.