  This study investigates one of the possible approaches of improvement of heat
exchangers efficiency. Literature review shows that most approaches of
improvement are based on the heat transfer surface increasing and
laminar-to-turbulent flow transition using different types of riffles forming
and shaped inserts. In this article, a novel approach to the heat transfer
intensification was employed. The main hypothesis is that applying of
multi-chamber design of heat exchanger - ordinary shell-and-tube regions
intersperse with common for all tubes regions - will help to improve the
utilization of the entrance hydraulic and thermal regions thereby receive
higher heat transfer coefficients and higher heat capacity of the heat exchange
device. To prove the hypotheses we take the following steps. Firstly,
development of the new geometry of the heat-exchanger design - multi chambers
construction. Secondly, proving of the higher efficiency of novel design
comparing to ordinary design by analytical calculations. Thirdly, numerical
simulation of the heat exchange process and fluids flow in both types of heat
exchangers that proves the analytical solution.
