Experimental studies and numerical modelling of heat and mass transfer process in shell-and-tube heat exchangers with compact arrangements of tube bundles

Abstract

Shall-and-tube heat exchangers based on the bundles with in-line or staggered arrangements have been widely used in industry and power engineering. A large number of theoretical and experimental works are devoted to study of hydrodynamic and heat transfer processes in such bundles. In that, works the basic studies of heat and mass transfer for these bundles are found. However, heat exchangers of this type can have big dimensions and mass. One of the ways to improve the weight and dimensions of the shell-and-tube heat exchangers is to use compact arrangement of tube bundles. A new design of heat exchanger is proposed, in which there are no gaps between adjacent tubes that touch each other. Different geometry of these tube bundles with displacement of adjacent tubes in the direction of transverse to the flow is considered. Numerical modelling and experimental investigations of hydrodynamic, heat and mass transfer processes in such tube bundles has been carried out. The distribution of velocities, temperatures, and pressure in inter-tube channels have been obtained.

Increasing Economic Efficiency When Creating a Dynamic Microclimate in Compressed Conditions of Production Premises

“…The task of air distribution calculation is to maintain the necessary air mobility and temperature difference in the working area, to choose the standard size of the air distributor with known initial data, and to assess the quality of the selected air distribution method. On the basis of the conducted theoretical and experimental studies of air distribution by swirled jets, it is possible to assert the expediency of their use when arranging supply air both in the upper zone of the ventilated room and in the working zone (Gorobets et al, 2018), (Voznyak et al, 2022).…”

CFD Modeling of Aerodynamic Flow in a Wind Turbine With Vertical Rotational Axis and Wind Flow Concentrator

“…Authors of Ipate G. et al, (2020) worked on the numerical study of the effects of the fluid interaction with the blades of the working bodies of the renewable energy conversion systems. The paper presents the results of numerical research regarding the influence of the blade shape (straight), the number of blades (2,3,4) or the wind speed in the area on the output power of the small capacity wind turbines.…”

Experimental Research and CFD Modeling of Modular Poultry Breeding

“…Authors Gorobets V. G. et al, (2018b) proposed a new cooling system in the poultry house using heat exchangers of special design (Gorobets V.G. et al, 2018a).…”