1989 Max Jakob Memorial Award Lecture: Some Optimizing Examples in Forced Convective Heat Transfer

1990 ◽  
Vol 112 (2) ◽  
pp. 268-273 ◽  
Author(s):  
Y. Mori
Keyword(s):  
Heat Transfer ◽  
Heat Exchanger ◽  
Convective Heat Transfer ◽  
Convective Heat ◽  
Chemical Vapor ◽  
Outlet Temperature ◽  
Tube Heat Exchanger ◽  
Helical Tube ◽  
Memorial Award ◽  
The Individual

Three examples are selected as representative cases concerning the basic convective heat transfer in the heat exchanger field, each of which has a specified parameter for optimizing the individual specific condition. First, the chemical vapor deposition of a silicone layer for SiH4 on the hot bottom wall of a horizontal rectangular furnace duct is discussed, assuming that a spatially uniform thickness of the layer is the optimal one. Second, the compact heat exchanger is studied with the insertion of a twisted strip in each channel so that the outlet temperature of the heated gas becomes uniform by changing the twist pitch appropriate to each channel. Third, a shell and helical tube heat exchanger is discussed for controlling flow-induced tube vibration by inserting separating plates between the tube arrays and optimizing the interval of the plates.

scholarly journals Fabrication and Experimental Analysis of Heat Transfer Characteristics of Acetone /Water by using Tube in Tube and Shell and Tube Heat Exchanger

2019 ◽  
Vol 8 (12) ◽  
pp. 5503-5510
Keyword(s):  
Heat Transfer ◽  
Heat Transfer Coefficient ◽  
Heat Exchanger ◽  
Transfer Coefficient ◽  
Convective Heat Transfer ◽  
Convective Heat ◽  
Water Mixture ◽  
Tube Heat Exchanger ◽  
Acetone Water ◽  
Shell And Tube

Cooling is essential to maintain the required efficiency and reliability in a wide range of products such as automobiles, high and medium cogeneration power plants, high power laser systems. Part of heat load amplification and the heat fluxes induced by more industrial products, cooling is one of the industry's main technical problems such as manufacturing, transport and in microelectronics. The main content of the paper is to study the LMTD (logarithmic mean temperature difference), Heat transfer Coefficient and Effectiveness (ε) of combined heat exchanger using acetone/water mixture as a function of a different mass flow rates. This paper deals with the experimental study on the three different heat exchangers like tube in tube, shell and tube and combined (tube in tube & shell and tube) heat exchanger with acetone/water mixture mostly to check the elevation of convective heat transfer coefficient, LMTD, effectiveness, overall heat transfer coefficient. This experimentation work give a summary of, the experimental study of the forced convective heat transfer and flow characteristics of a 25% acetone consisting of 75% water. Acetone/water mixture flow in to a parallel, counter direction in the tube in tube, shell and tube heat exchanger and combined heat exchanger under laminar flow conditions. A maximum increase in the coefficient of convective heat transfer of 58.4% and an effectiveness of 48.5% is recorded. However, combined heat exchanger provides better heat transfer characteristics than parallel and counter flow tubular and shell and tube heat exchanger due to the multi-pass flow of acetone/water. The overall heat transfer coefficients, Reynolds number, logarithmic mean temperature difference, the effectiveness of the acetone/water are also studied and the results are presented in tabular columns and figures.

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
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