Open Access

ARTICLE

Experimental Investigation of Two-Phase Flow Maldistribution in Plate Heat Exchangers

by Zhaiyk Tokhtarov^1,*, Vitaly Perov², Vitaly Borisov³, Evgeny Tikhomirov⁴, Olga Grunina⁵, Nadezhda Kapustina^5,6, Elmira Cherkasova⁷, Natalya Suray⁵

1 Shakarim University of Semey, Semey City, 070000, Kazakhstan
2 Plekhanov Russian University of Economics, Moscow, 117997, Russia
3 National Research Mordovia State University, Mordovia, 430005, Russia
4 Bauman Moscow State Technical University, Moscow Region, Mytischi, 105005, Russia
5 K.G. Razumovsky Moscow State University of Technologies and Management (The First Cossack University), Moscow, 119991, Russia
6 Financial University Under the Government of the Russian Federation, Moscow, 125993, Russia
7 Russian State Agrarian University–Moscow Timiryazev Agricultural Academy, Moscow, 127550, Russia

* Corresponding Author: Zhaiyk Tokhtarov. Email:

(This article belongs to the Special Issue: Advances in Fluid Flow and Smart Materials)

Fluid Dynamics & Materials Processing 2022, 18(4), 1015-1024. https://doi.org/10.32604/fdmp.2022.019534

Received 28 September 2021; Accepted 18 December 2021; Issue published 06 April 2022

Abstract

After conducting a critical survey of the different categories of existing heat exchangers, the results of several experiments about the behaviour of a two-phase current in an open channel are reported. The results confirm the complexity of the problems induced in heat exchangers by flow maldistribution, especially when two-phase flows are considered in multi-channel systems. It is shown that severe misalignment of heat exchangers can lead to a loss of economic performance of more than 25%. Improper distribution of fluid flow causes longer fluid coils to form, and the liquid cochlea can eventually occupy a large space, thereby reducing heat transfer and disrupting the considered biphasic system. The use of a small diameter distribution pipe with properly spaced outlet holes seems to be a promising approach to fix many of these issues. It is found that the current distribution in the channels, in addition to the header pressure distribution, also depends on factors such as the geometry and the initial flow regime in the header.

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