Investigation of Heat Transfer in Concentric Tube Heat Exchanger
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The book includes various heat transfer augmentation techniques. A literature review of heat transfer augmentation using passive techniques has been included. Experimental work on heat transfer augmentation using a new kind of inserts called triangular inserts carried out. Inserts when placed in the path of the flow of the liquid, create a high degree of turbulence resulting in an increase in the heat transfer rate and the pressure drop or friction losses. The work includes the determination of friction factor and heat transfer coefficient for triangular inserts in both counter and parallel fl...
The book includes various heat transfer augmentation techniques. A literature review of heat transfer augmentation using passive techniques has been included. Experimental work on heat transfer augmentation using a new kind of inserts called triangular inserts carried out. Inserts when placed in the path of the flow of the liquid, create a high degree of turbulence resulting in an increase in the heat transfer rate and the pressure drop or friction losses. The work includes the determination of friction factor and heat transfer coefficient for triangular inserts in both counter and parallel flow. The result of triangular inserts and has been compared with the values for the smooth tube. For twisted triangular inserts it was observed that the heat transfer coefficient could vary from 1.16 to 1.97 times the smooth tube value but the corresponding friction factor increases by 1.2 to 2.6 times the smooth tube values. It was also observed that with an increase in Reynolds number (Re),the heat transfer coefficient increases where as the friction factor decreases.
The book includes various heat transfer augmentation techniques. A literature review of heat transfer augmentation using passive techniques has been included. Experimental work on heat transfer augmentation using a new kind of inserts called triangular inserts carried out. Inserts when placed in the path of the flow of the liquid, create a high degree of turbulence resulting in an increase in the heat transfer rate and the pressure drop or friction losses. The work includes the determination of friction factor and heat transfer coefficient for triangular inserts in both counter and parallel flow. The result of triangular inserts and has been compared with the values for the smooth tube. For twisted triangular inserts it was observed that the heat transfer coefficient could vary from 1.16 to 1.97 times the smooth tube value but the corresponding friction factor increases by 1.2 to 2.6 times the smooth tube values. It was also observed that with an increase in Reynolds number (Re), the heat transfer coefficient increases where as the friction factor decreases.
The book includes various heat transfer augmentation techniques. A literature review of heat transfer augmentation using passive techniques has been included. Experimental work on heat transfer augmentation using a new kind of inserts called triangular inserts carried out. Inserts when placed in the path of the flow of the liquid, create a high degree of turbulence resulting in an increase in the heat transfer rate and the pressure drop or friction losses. The work includes the determination of friction factor and heat transfer coefficient for triangular inserts in both counter and parallel flow. The result of triangular inserts and has been compared with the values for the smooth tube. For twisted triangular inserts it was observed that the heat transfer coefficient could vary from 1.16 to 1.97 times the smooth tube value but the corresponding friction factor increases by 1.2 to 2.6 times the smooth tube values. It was also observed that with an increase in Reynolds number (Re), the heat transfer coefficient increases where as the friction factor decreases.
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