New Method of Thermal Testing Shell−and−Tube Heat Exchangers

International Journal of Applied Physics

© 2020 by SSRG - IJAP Journal

Volume 7 Issue 3

Year of Publication : 2020

Authors : Konstantin Ludanov

10.14445/23500301/IJAP-V7I3P106

How to Cite?

Konstantin Ludanov, "New Method of Thermal Testing Shell−and−Tube Heat Exchangers," SSRG International Journal of Applied Physics, vol. 7,  no. 3, pp. 37-43, 2020. Crossref, https://doi.org/10.14445/23500301/IJAP-V7I3P106

Abstract:

The article presents new methods of thermal testing of shell-and-tube heat exchangers according to copyright certificates SU No. 1377558 and No. 1589021, in which for the first time, two parameters of a heat exchanger are jointly determined: the heat transfer coefficient k and the conditional angle φ between the directions of flow of heat carriers in the heat exchanger. This angle φ (rad) characterizes the efficiency of the mutual flow of heat carriers, which increases with an increase in the angle φ: for forward flow, i.e., the most ineffective scheme, φ = 0, and for counter-flow, i.e., the most efficient scheme φ = π (180 degrees). With the determination of a new parameter φ, this test method allows a more accurate determination of the heat transfer coefficient k − due to the separation of the contributions to the efficiency of the heat exchanger of both factors: intensive (k) and extensive factor (φ). The paper also presents the theoretical foundations of the universal thermal calculation method (UMTC) of heat exchangers-recuperators. The efficiency of the coolant flow circuit is set just by the conditional angle φ.

Keywords:

shell-and-tube heat exchanger, heat carrier, thermal tests, heat transfer coefficient, the efficiency of the current circuit, counter-flow index, conditional angle.

References:

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