LAMINAR/VISCOUS FLOW HEAT TRANSFER UNIT Deluxe

This unit has been designed to provide students with experimental work related to the transfer of heat in a concentric tube heat exchanger when flow is laminar. Heat transfer takes place between oil and water in a concentric tube. Oil flowing in the inner tube is raised to a maximum temperature of 90°C in a tank fitted with an electric heating element. Learn about LAMINAR/VISCOUS FLOW HEAT TRANSFER UNIT specifications for optimal educational outcomes.. 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. Learn about Digital LAMINAR/VISCOUS FLOW HEAT TRANSFER UNIT for optimal educational outcomes.. As it flows downwards, the oil is cooled as heat is transferred to the flow of cooling water surrounding the core tube. On leaving, the oil passes through a flow control valve to a strong glass measuring cylinder fitted with a contents scale. Learn about LAMINAR/VISCOUS FLOW HEAT TRANSFER UNIT for educational labs for optimal educational outcomes.. By measuring the volume change over time, an accurate flow rate may be determined. Mains cold water passes through a combined flow control valve and flowmeter to a separate pair of valves on the front panel, which direct the cold water to either end of the heat exchanger and allow instantaneous flow reversal from concurrent to counter-current flow. Learn about LAMINAR/VISCOUS FLOW HEAT TRANSFER UNIT price for optimal educational outcomes.. Thermocouples sense the hot and cold stream temperatures and the wall temperatures on entry and exit.

• Panel: High quality GRP
• Heat Exchanger: Concentric tube type with 2 inlet, 2 outlet and 2 pipe surface thermocouples; area 0.0305m²
• Heater Tank: Capacity approximately 2.5 litres with 500W heater controlled by digital PID controller
• Measuring Tank: Glass, effective capacity 0.5 litre
• Pump: Continuous rated to circulate hot oil
• Flow Meter: For cold water
• Digital Thermometer: 0.1°C resolution with multi-way selector switch
• Cold water flow reversal valves x 2
• Safety Features: thermostat to limit oil temperature to 90°C; combined main switch and overload cut out; residual current circuit breaker; all metal components connected to common earth conductor