Affiliation:
1. School of Mechanical and Power Engineering, Zhengzhou University, Zhengzhou, China
2. Schoolof Energy and Environment, Zhongyuan University of Technology, Zhengzhou, China
Abstract
A double helical-like flow heat exchanger model was built, its shell-side
flow state was studied by the CFD method, and the difference in heat
transfer performance between it and the torsional flow heat exchanger was
compared. From the numerical simulation results, it is found that the heat
transfer coefficient and pressure drop are improved by 7.07%-8.93% and
15.50%-18.22% respectively at the same flow rate, and the comprehensive
performance expressed as Nu/f1/3 is improved by 21.84%-24.08%. Using the
orthogonal test method to optimize the shell-side structure, it is found
that the comprehensive performance is influenced by the two factors of
spacing/groups and angle of baffles, and the influence of the deflection
angle of two adjacent groups of baffles is very small, and the optimal
structural combination of comprehensive performance is 30-0-70/11 (the angle
of baffles is 30?, the deflection angle of two adjacent groups of baffles
is 0?, the spacing between two adjacent sets of baffles is 70 mm, and the
number of baffle groups is 11). The reliability and feasibility of the
simulation method were verified by experiments.
Publisher
National Library of Serbia
Subject
Renewable Energy, Sustainability and the Environment
Cited by
1 articles.
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