Open Access
ARTICLE
INFLUENCE OF RING SIZE AND LOCATION ON FLOW TOPOLOGY, HEAT TRANSFER STRUCTURE AND THERMAL EFFICIENCY IN HEAT EXCHANGER SQUARE CHANNEL PLACED WITH 30-DEGREE INCLINED SQUARE RING
Amnart Boonloia, Withada Jedsadaratanachaib,*
a Department of Mechanical Engineering Technology, College of Industrial Technology, King Mongkut’s University of Technology North Bangkok,
Bangkok 10800, Thailand
b Department of Mechanical Engineering, Faculty of Engineering, King Mongkut’s Institute of Technology Ladkrabang, Bangkok 10520, Thailand
* Corresponding Author: Email:
Frontiers in Heat and Mass Transfer 2019, 13, 1-11. https://doi.org/10.5098/hmt.13.28
Abstract
This paper presents the numerical investigations (finite volume method with SIMPLE algorithm) on flow structure, heat transfer behavior and
performance assessment in heat exchanger square channel placed with 30o inclined square ring (ISR). The influences of ring size and placement on
flow and heat transfer characteristics are considered for laminar flow region with the Reynolds number in the range around 100 – 2000. The purpose
for the insertion of the ISR in the square channel is to induce the vortex flow and also increase the turbulent mixing. The numerical result reveals that
the ring size and location have effects for the changes of the flow and heat transfer behaviors in the tested section. The present of the ISR in the tested
section gives the maximum heat transfer rate around 8.13 times above the smooth square channel. In addition, the optimum thermal performance at
similar pumping power or TEF is around 3.10.
Keywords
Cite This Article
Boonloi, A., Jedsadaratanachai, W. (2019). INFLUENCE OF RING SIZE AND LOCATION ON FLOW TOPOLOGY, HEAT TRANSFER STRUCTURE AND THERMAL EFFICIENCY IN HEAT EXCHANGER SQUARE CHANNEL PLACED WITH 30-DEGREE INCLINED SQUARE RING.
Frontiers in Heat and Mass Transfer, 13(1), 1–11. https://doi.org/10.5098/hmt.13.28