公开(公告)号：US09303922B2

公开(公告)日：2016-04-05

申请号：US14077627

申请日：2013-11-12

申请人： Tata Steel Limited

发明人： Jayabrata Bhadurt ,  Deb Roy ,  Subhrakanti Chakraborty ,  Shantanu Chakraborty ,  Sumitesh Das ,  Debashish Bhattacharjee

IPC分类号： B21C9/00 ,  F27D9/00 ,  B21B45/02 ,  F27D19/00 ,  C21D1/767 ,  C21D1/74 ,  C21D1/76 ,  C21D11/00

CPC分类号： F27D9/00 ,  B21B45/0224 ,  C21D1/74 ,  C21D1/76 ,  C21D1/767 ,  C21D11/005 ,  F27D19/00

摘要： A method and apparatus to increase the cooling rate of gas used in a batch annealing furnace of cold rolling mills under bypass cooling. The invention makes use of the higher heat transfer capacities of nanocoolants developed by a high-shear mixing of nanoparticles and stabilizers in a basic aqueous medium for cooling heated hydrogen flowing through a heat exchanger during bypass cooling of the batch annealing furnace. The nanofluid is prepared in a nanofluid preparation unit.