Laminar Viscous Flow Heat Exchanger (SMT-HT-44)

availability: in stock

Specifications:
A bench top unit incorporating a concentric tube
heat exchanger for the investigation of heat transfer
between oil and water at velocities when the flow is
laminar. The unit includes oil heating and pumping
equipment, temperature control, flow and
temperature measurement and provides for concurrent and counter-current flow in the heat
exchanger.
Panel: High quality glass reinforced plastic having an
attractive appearance on which the following are
mounted.
Heat Exchanger: Concentric tube type with 2 inlet, 2
outlet and two pipe surface type T thermocouples,
Area 0.0305m2.
Technical specification

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Description

Heat transfer is allowed to take place between oil and water in a concentric tube. Oil flowing
in the inner tube is supplied by an international oil company and has a kinematic viscosity at
70°C, of approximately 8×10-6 m2 s-1. The oil is raised to a maximum temperature of 90°C in
a tank fitted with an electric heating element. Control is by a panel mounted digital PID
controller and the maximum temperature is limited by a separate thermostat for operator
safety. The heated oil is pumped from the tank into the core tube of the diagonally mounted
concentric tube heat exchanger. As it flows downwards, the oil is cooled as heat is transferred
to the flow of cooling water which surrounds the core tube. On leaving the oil passes through
a flow control valve to a strong glass measuring cylinder fitted with a contents scale. By
measuring the volume change over time, an accurate flow rate may be determined. A quick
acting valve and internal overflow allows oil back to the heater tank for re-circulation.