Devise of a W serpentine shape tube heat exchanger in a hard chromium electroplating process  

作　　者：Surasit Tanthadiloke Paisan Kittisupakorn Pannee Boriboonsri Iqbal M.Mujtaba 

机构地区：[1]Department of Chemical Engineering,Faculty of Engineering,Chulalongkorn University [2]School of Engineering,University of Bradford

出　　处：《Chinese Journal of Chemical Engineering》2019年第1期218-225,共8页中国化学工程学报（英文版）

基　　金：Supported by Thailand Research Fund(TRF)under The Royal Golden Jubilee Ph.D.Program(PHD/0158/2550);Chulalongkorn University(Contract No.RES_57_411_21_076);Chulalongkorn Academic Advancement into its 2nd Century Project

摘　　要：In a hard chromium electroplating process, a heat exchanger is employed to remove the heat produced from the high current intensity in an electroplating bath.Normally, a conventional U shape heat exchanger is installed in the bath, but it provides low heat removal.Thus, this study designs a novel W serpentine shape heat exchanger with identical heat transfer area to the conventional one for increasing heat removal performance.The performance of the heat exchange is tested with various flow velocities in a cross-section in range of 1.6 to 2.4 m·s^(-1).Mathematical models of this process have been formulated in order to simulate and evaluate the heat exchanger performance.The results show that the developed models give a good prediction of the plating solution and cooling water temperature, and the novel heat exchanger provides better results at any flow velocity.In addition, the W serpentine shape heat exchanger has been implemented in a real hard chromium electroplating plant.Actual data collected have shown that the new design gives higher heat removal performance compared with the U shape heat exchanger with identical heat transfer area; it removes more heat out of the process than the conventional one of about 23%.In a hard chromium electroplating process, a heat exchanger is employed to remove the heat produced from the high current intensity in an electroplating bath.Normally, a conventional U shape heat exchanger is installed in the bath, but it provides low heat removal.Thus, this study designs a novel W serpentine shape heat exchanger with identical heat transfer area to the conventional one for increasing heat removal performance.The performance of the heat exchange is tested with various flow velocities in a cross-section in range of 1.6 to 2.4 m·s^(-1).Mathematical models of this process have been formulated in order to simulate and evaluate the heat exchanger performance.The results show that the developed models give a good prediction of the plating solution and cooling water temperature, and the novel heat exchanger provides better results at any flow velocity.In addition, the W serpentine shape heat exchanger has been implemented in a real hard chromium electroplating plant.Actual data collected have shown that the new design gives higher heat removal performance compared with the U shape heat exchanger with identical heat transfer area; it removes more heat out of the process than the conventional one of about 23%.

关 键 词：W SERPENTINE SHAPE Hard CHROMIUM ELECTROPLATING Mathematical modeling Simulation Heat EXCHANGER 

分 类 号：TQ[化学工程]