scholarly journals Thermal Performance of Shell and Tube Heat Exchanger Using PG/Water and Al2O3 Nanofluid

2019 ◽  
Author(s):  
Jaafar Albadr
Keyword(s):  
Heat Exchanger ◽  
Thermal Performance ◽  
Tube Heat Exchanger ◽  
Shell And Tube ◽  
Al2o3 Nanofluid

Thermal Performance Enhancement of an Industrial Shell and Tube Heat Exchanger

2015 ◽  
Author(s):  
Fadi A. Ghaith ◽  
Ahmed S. Izhar
Keyword(s):  
Heat Transfer ◽  
Heat Transfer Coefficient ◽  
Heat Exchanger ◽  
Transfer Coefficient ◽  
Thermal Performance ◽  
Numerical Study ◽  
Thermal Design ◽  
Shell Side ◽  
Tube Heat Exchanger ◽  
Shell And Tube

This paper aims to enhance the thermal performance of an industrial shell-and-tube heat exchanger utilized for the purpose of cooling raw natural gas by means of mixture of Sales gas. The main objective of this work is to provide an optimum and reliable thermal design of a single-shelled finned tubes heat exchanger to replace the existing two- shell and tube heat exchanger due to the space limitations in the plant. A comprehensive thermal model was developed using the effectiveness-NTU method. The shell-side and tube-side overall heat transfer coefficient were determined using Bell-Delaware method and Dittus-Boelter correlation, respectively. The obtained results showed that the required area to provide a thermal duty of 1.4 MW is about 1132 m2 with tube-side and shell-side heat transfer coefficients of 950 W/m2K and 495 W/m2K, respectively. In order to verify the obtained results generated from the mathematical model, a numerical study was carried out using HTRI software which showed a good match in terms of the heat transfer area and the tube-side heat transfer coefficient.

scholarly journals Numerical investigation of shell and tube heat exchanger using Al2O3 nanofluid

2017 ◽  
Vol 20 (1) ◽  
pp. 59-59 ◽  
Author(s):  
THUNDIL KARUPPA RAJ RAJAGOPAL ◽  
Akshay kumar Surana ◽  
John Samuel Koppula ◽  
Shrutesh Harshit ◽  
Ujjwal Kumar
Keyword(s):  
Heat Exchanger ◽  
Numerical Investigation ◽  
Tube Heat Exchanger ◽  
Shell And Tube ◽  
Al2o3 Nanofluid

scholarly journals Combination Effect of Baffle Arrangement and Hybrid Nanofluid on Thermal Performance of a Shell and Tube Heat Exchanger Using 3-D Homogeneous Mixture Model

Mathematics ◽  
2021 ◽  
Vol 9 (8) ◽  
pp. 881
Author(s):  
Mashhour A. Alazwari ◽  
Mohammad Reza Safaei
Keyword(s):  
Heat Exchanger ◽  
Pressure Drop ◽  
Thermal Performance ◽  
Heat Removal ◽  
Hybrid Nanofluid ◽  
Distilled Water ◽  
Reference Case ◽  
Maximum Heat ◽  
Tube Heat Exchanger ◽  
Shell And Tube

In this study, thermal performance and flow characteristics of a shell and tube heat exchanger equipped with various baffle angles were studied. The heat exchanger was operated with distilled water, and a hybrid nanofluid at three concentrations of 0.04% and 0.10% of GNP-Ag/water within Reynolds numbers ranged between 10,000 and 20,000. The thermophysical properties of nanofluid varied with temperature and nanoparticles’ concentration. The baffle angles were set at 45°, 90°, 135°, and 180°. Results showed that the calculated Nusselt number (Nu) could be improved by adding nanoparticles to the distilled water or increasing the fluid’s Reynolds number. At a low Re number, the Nu corresponding to baffle angle of 135° was very close to that recorded for the angle of 180°. At Re = 20,000, the Nu number was the highest (by 35% compared to the reference case), belonging to a baffle angle of 135°. Additionally, results related to friction factor and pressure drop showed that more locations with fluid blocking were observed by increasing the baffle angle, resulting in increased pressure drop value and friction. Finally, the temperature streamlines counter showed that the best baffle angle could be 135° in which maximum heat removal and the best thermal performance can be observed.

Forced Convective Heat Transfer of Aqueous Al2O3 Nanofluid Through Shell and Tube Heat Exchanger

2018 ◽  
Vol 18 (3) ◽  
pp. 1730-1740 ◽  
Author(s):  
A. K. M. Mahmudul Haque ◽  
Sedong Kim ◽  
Junhyo Kim ◽  
Jungpil Noh ◽  
Sunchul Huh ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Convective Heat Transfer ◽  
Convective Heat ◽  
Tube Heat Exchanger ◽  
Forced Convective Heat Transfer ◽  
Shell And Tube ◽  
Al2o3 Nanofluid

scholarly journals Effect of Hybrid Controller on a Heat Exchanger for ENHANCING HEAT Transfer Rate of AL2O3 Nanofluid

2021 ◽  
Vol 9 (10) ◽  
pp. 587-592
Author(s):  
R. Vivekananthan
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Heat Transfer Rate ◽  
Transfer Rate ◽  
Outlet Temperature ◽  
Tube Heat Exchanger ◽  
Hybrid Controller ◽  
Wide Range ◽  
Shell And Tube ◽  
Al2o3 Nanofluid

Abstract: In this research paper, a hybrid controller is designed and developed which maintains the outlet temperature of a shell and tube heat exchanger by varying the cold water flow rate in such a way that conform the desired set value. Al2O3 nanofluid is mixed with water is to be used as the cooling fluid to increase the rate of heat transfer. PID controller only is not suitable for precise and a wide range of temperature control requirement. So that hybrid controller is designed and implemented by combining methods of fuzzy logic and PID controller’s concepts using Labview. Experiments were done on parallel flow shell and tube heat exchanger in a closed cycle system. The performance of the heat exchanger system is improved by a hybrid controller and the heat transfer rate is enhanced by aluminum oxide nanofluid. Keywords: Heat transfer, shell and tube heat exchanger, Al2O3 nanofluid, Labview, hybrid controller Introduction

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