Thermo-Fluid Performance Evaluation of an Elliptical Tube Type Fin-and-Tube Heat Exchanger Supported with Winglets

Author(s):  
S. K. Sarangi ◽  
D. P. Mishra
2015 ◽  
Vol 52 (8) ◽  
pp. 1425-1433 ◽  
Author(s):  
I. M. Shahrul ◽  
I. M. Mahbubul ◽  
R. Saidur ◽  
S. S. Khaleduzzaman ◽  
M. F. M. Sabri

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Amarjit Singh ◽  
Satbir S. Sehgal

In this study, the experimental analysis was performed on the shell-and-tube type heat exchanger containing segmental baffles at different orientations. In the current work, three angular orientations (θ) 0°, 30°, and 60° of the baffles were analyzed for laminar flow having the Reynolds number range 303–1516. It was observed that, with increase of Reynolds number from 303 to 1516, there was a 94.8% increase in Nusselt number and 282.9% increase in pressure drop. Due to increase of Reynolds number from 303 to 1516, there is a decrease in nondimensional temperature factor for cold water (ω) by 57.7% and hot water (ξ) by 57.1%, respectively.


Author(s):  
Haolin Ma ◽  
Alparslan Oztekin

Computational fluid dynamics and heat transfer simulations are conducted for a novel shell-tube type heat exchanger. The heat exchanger consists of tube with a narrow slot oriented in the streamwise direction. Numerical simulations are conducted for the Reynolds number of 1500. The 3D turbulent flow in the tube bank region is modeled by k-ε Reynolds stress averaging method by employing ANSYS FLUENT. 3-D transient flow and heat transfer simulations are conducted to determine the flow structure and temperature profiles in the wake of cylinders in the first row and other rows. The effects of the slot size and the orientation and the arrangement of the cylinder in different configuration will be examined. The slotted tube heat exchanger improved heat transfer by more than 27% compare to the traditional shell-tube heat exchanger without slots. Enhancement in heat transfer is even higher at higher values of Reynolds number.


2014 ◽  
Vol 2014 (0) ◽  
pp. _E123-1_-_E123-2_
Author(s):  
Yuya Arakawa ◽  
Taketo Uchino ◽  
Taro Nakanishi ◽  
Ryutaro Shinohara

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