scholarly journals Investigation of super-critical water-based nanofluid with different nanoparticles (shapes and types) used in the rectangular corrugated tube of reactors

2021 ◽  
Author(s):  
H. Behzadnia ◽  
Hui Jin ◽  
M. Najafian ◽  
M. Hatami
Keyword(s):  
Corrugated Tube ◽  
Water Based

Experimental study of thermohydraulic characteristics and irreversibility analysis of novel axial corrugated tube with spring tape inserts

2020 ◽  
Vol 92 (3) ◽  
pp. 30901
Author(s):  
Suvanjan Bhattacharyya ◽  
Debraj Sarkar ◽  
Ulavathi Shettar Mahabaleshwar ◽  
Manoj K. Soni ◽  
M. Mohanraj
Keyword(s):  
Heat Transfer ◽  
Experimental Study ◽  
Thermal Performance ◽  
Working Fluid ◽  
The Novel ◽  
Heat Exchanger Tube ◽  
Heat Transfer Augmentation ◽  
Corrugated Tube ◽  
The Impact ◽  
Exchanger Tube

The current study experimentally investigates the heat transfer augmentation on the novel axial corrugated heat exchanger tube in which the spring tape is introduced. Air (Pr = 0.707) is used as a working fluid. In order to augment the thermohydraulic performance, a corrugated tube with inserts is offered. The experimental study is further extended by varying the important parameters like spring ratio (y = 1.5, 2.0, 2.5) and Reynolds number (Re = 10 000–52 000). The angular pitch between the two neighboring corrugations and the angle of the corrugation is kept constant through the experiments at β = 1200 and α = 600 respectively, while two different corrugations heights (h) are analyzed. While increasing the corrugation height and decreasing the spring ratio, the impact of the swirling effect improves the thermal performance of the system. The maximum thermal performance is obtained when the corrugation height is h = 0.2 and spring ratio y = 1.5. Eventually, correlations for predicting friction factor (f) and Nusselt number (Nu) are developed.

Heat Transfer Enhancement in Spirally Corrugated Tube

2014 ◽  
Vol 7 (6) ◽  
pp. 970 ◽  
Author(s):  
Tholudin Mat Lazim ◽  
Zaid Sattar Kareem ◽  
M. N. Mohd Jaafar ◽  
Shahrir Abdullah ◽  
Ammar F. Abdulwahid
Keyword(s):  
Heat Transfer ◽  
Heat Transfer Enhancement ◽  
Transfer Enhancement ◽  
Corrugated Tube

Modeling of Extinguishing of Oil Product Fires in the Tanks Using Water-based Extinguishing Agents

2020 ◽  
pp. 14-22
Author(s):  
N.P. Kopylov ◽  
◽  
D.V. Fedotkin ◽  
A.V. Karpov ◽  
E.Yu. Sushkina ◽  
...  
Keyword(s):  
Water Based

PROTECTION OF OIL POWER TRANSFORMERS BY MEANS OF WATER BASED SUPPRESSION SYSTEMS

2018 ◽  
pp. 37-42
Author(s):  
Aleksei Rozhkov ◽  
◽  
Darya Perednya ◽  
Vladimir Roitman ◽  
◽  
...  
Keyword(s):  
Power Transformers ◽  
Water Based ◽  
Suppression Systems
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