Liquid Chromatography Mass Spectroscopy Triple Quadra pole LC-MS and MS
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Osborne Reynolds Apparatus
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Water And Water Turbulent Flow Heat Transfer Unit heat exchanger may be connected to give either con-current or counter-current flow and the two additional pairs of intermediate stream temperatures allow classic heat exchanger temperature profiles to be plotted. The Water And Water Turbulent Flow Heat Transfer Unit includes all the necessary temperature and flow measurements and is suitable for both basic and advance studies. The metal and two fluid stream temperature are measured at inlet and outlet allowing the relationship Nu = k ReaPrb to be developed by evaluating k, a and b. The Water And Water Turbulent Flow Heat Transfer Unit enables students to study the detailed performance of concentric tube heat exchangers of the type most commonly used in industry. By varying the water velocity and temperature Reynolds Numbers of 4000 to 70000 and Prandtl Numbers of 2.5 to 5 can be achieved.
Experimental Capabilities:
Determination of surface heat transfer coefficient inside and outside the tube, and of the effect of fluid velocity.
Determination of heat transfer rate, logarithmic mean temperature difference, overall heat transfer coefficient and 4 point hot and cold stream temperature profiles.
Determination of the constants in Nu = k Rea Prb.
Comparison of performance in concurrent and in counter-current flow.
Investigation of the relationship between Nusselt (Nu), Reynolds (Re) and Prandtl (Pr) Numbers for Reynolds Numbers up to 65000 and for Prandtl Numbers between 2.5 and 5.0.
This apparatus has asingle circuit with bends, pressure tappings and an expansion-contraction. Aball valve at the pipe exit controls water flow. The valve is downstream, so itdoes not cause any upstream turbulence. This compact bench-top apparatus uses smooth, industry standardplastic pipe, commonly used in domestic and other small-bore water systems. Itworks with Digital Hydraulic Bench. The bench supports the apparatus andcirculates and measures the water flowing through it. A useful diagram on the apparatus shows themain dimensions of the pipework and fittings. It also shows the positions ofthe tappings and the tubes that they connect to. Each pressure tapping point in the pipeconnects to a piezo meter tube in the vertical panel of the apparatus. The product includes ahand-pump to adjust the datum of the piezometer tubes. During experiments, these tubes measure and compare pressure differences across thebends, expansion and contraction.
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