Experimental Result on Heat Transfer during Quenching of Hot Steel Plate by Spray Impingement

2017 ◽  
Vol 39 (9) ◽  
pp. 739-749 ◽  
Author(s):  
Santosh K. Nayak ◽  
Purna C. Mishra ◽  
Manoj Ukamanal ◽  
Rajeswari Chaini
Keyword(s):  
Heat Transfer ◽  
Steel Plate ◽  
Experimental Result ◽  
Spray Impingement

Heat Transfer from a Hot Moving Steel Plate by Air-Atomized Spray Impingement

2015 ◽  
Vol 29 (1) ◽  
pp. 78-96 ◽  
Author(s):  
J. M. Jha ◽  
S. V. Ravikumar ◽  
K. Haldar ◽  
I. Sarkar ◽  
S. K. Pal ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Steel Plate ◽  
Spray Impingement

Effect of Water Temperature on Spray Cooling Heat Transfer on Hot Steel Plate

2010 ◽  
Author(s):  
Jungho Lee ◽  
Cheong-Hwan Yu ◽  
Sang-Jin Park
Keyword(s):  
Heat Transfer ◽  
Heat Flux ◽  
Water Temperature ◽  
Steel Plate ◽  
Cooling Water ◽  
Local Heat ◽  
Spray Cooling ◽  
Transfer Coefficients ◽  
Cooling Water Temperature ◽  
Local Heat Flux

Water spray cooling is an important technology which has been used in a variety of engineering applications for cooling of materials from high-temperature nominally up to 900°C, especially in steelmaking processes and heat treatment in hot metals. The effects of cooling water temperature on spray cooling are significant for hot steel plate cooling applications. The local heat flux measurements are introduced by a novel experimental technique in which test block assemblies with cartridge heaters and thermocouples are used to measure the heat flux distribution on the surface of hot steel plate as a function of heat flux gauge. The spray is produced from a fullcone nozzle and experiments are performed at fixed water impact density of G and fixed nozzle-to-target spacing. The results show that effects of water temperature on forced boiling heat transfer characteristics are presented for five different water temperatures between 5 to 45°C. The local heat flux curves and heat transfer coefficients are also provided to a benchmark data for the actual spray cooling of hot steel plate cooling applications.

Simulation of Cooling Process of Medium Thickness Steel Plate

2008 ◽  
Vol 594 ◽  
pp. 34-38
Author(s):  
Ji Guang Han ◽  
Yang Bai
Keyword(s):  
Heat Transfer ◽  
Simulation Model ◽  
Steel Plate ◽  
Accelerated Cooling ◽  
Mathematics Model ◽  
Cooling Process ◽  
Medium Thickness

By carefully researching and analyzing on cooling process of medium thickness steel plate, a mathematics model of heat transfer and its corresponding simulation model are established and evaluated with finite discrimination for a selected cooling object, and a simulation model is established. Through simulation and locate testing, the calculated values obtained are agreed very well with the measured ones. This indicates that the simulation model can preferably reveal the accelerated cooling process of medium thickness steel plate and can be applied to guide the manufacture of medium thickness steel plate.

Experimental Investigation of Boiling Heat Transfer in a Liquid Chamber With Partially Soluble Nanofluids

2021 ◽  
Author(s):  
Noriyuki Unno ◽  
Kazuhisa Yuki ◽  
Risako Kibushi ◽  
Rika Nogita ◽  
Atsuyuki Mitani
Keyword(s):  
Heat Transfer ◽  
Heat Flux ◽  
Boiling Heat Transfer ◽  
Electronic Devices ◽  
High Heat ◽  
Experimental Result ◽  
High Heat Flux ◽  
Promising Technique ◽  
Cooling Device ◽  
Cooling Devices

Abstract Boiling heat transfer (BHT) is a promising technique to remove a high heat flux emitted from next-generation electronic devices. However, critical heat flux (CHF) is a big problem in BHT because it restricts the maximum performance of the cooling devices using BHT. Nanofluid has been widely used to improve the CHF. In this study, the authors investigated the BHT of a compact cooling device at low pressure using a special nanofluid: that is made with partially soluble particles in water. The experimental result found that the CHF with the special nanofluid is 170 W/cm2 and is higher than that with nanofluid made with an insoluble nanoparticle.

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