Experimental Investigation of Two-Phase Flow Maldistribution in Plate Heat Exchangers
Tokhtarov Z. Perov V. Borisov V. Tikhomirov E. Grunina O. Kapustina N. Cherkasova E. Suray N.
2022Tech Science Press
Fluid Dynamics and Materials Processing
2022#18Issue 41015 - 1024 pp.
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.
heat exchangers , Maldistribution , open channel , two phase
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Shakarim University of Semey, Semey City, 070000, Kazakhstan
Plekhanov Russian University of Economics, Moscow, 117997, Russian Federation
National Research Mordovia State University, Mordovia, 430005, Russian Federation
Bauman Moscow State Technical University, Moscow Region, Mytischi, 105005, Russian Federation
K.G. Razumovsky Moscow State University of Technologies and Management (The First Cossack University), Moscow, 119991, Russian Federation
Financial University Under the Government of the Russian Federation, Moscow, 125993, Russian Federation
Russian State Agrarian University-Moscow Timiryazev Agricultural Academy, Moscow, 127550, Russian Federation
Shakarim University of Semey
Plekhanov Russian University of Economics
National Research Mordovia State University
Bauman Moscow State Technical University
K.G. Razumovsky Moscow State University of Technologies and Management (The First Cossack University)
Financial University Under the Government of the Russian Federation
Russian State Agrarian University-Moscow Timiryazev Agricultural Academy
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