Applied Thermodynamics

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  Applied Thermodynamics

  Concentric Tube Heat Exchanger PC

  The mobile test stand can be used to demonstrate the fundamentals of heat exchange between tubular flows. The unit is prepared for processing the measured data on a PC. Hot water circuit with pump, tank and tank heater. The water temperature is set on the heater with a thermostat. The cold water is taken from the network supply. Heat exchange takes place in a double-walled pipe. Manual valves permit both parallel and counterflow operation. The cold and hot water flow rates can be adjusted. The flow rate and relevant temperatures are recorded by electronic sensors. A display panel for the measured values is located on the instrument panel next to the copper pipework. The data acquisition card and software are included.

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  Applied Thermodynamics

  Fluidisation and Heat Transfer

  A fluidised bed is formed when a mass of particles is suspended by passing gas through them. The thermodynamic and fluid mechanical properties of the solid take on the character of a fluid. The heat transfer from a heated cylinder to the fluidised bed can be investigated using the benchtop unit. The glass measuring cylinder with background lighting enables the fluid bed and the fluidisation process to be very clearly observed. A heating element that can be lowered into the reactor enables the transfer of heat in the fluidised bed to be investigated. Temperatures are measured with sensors at the air inlet of the reactor, at the surface of the heating element and in the fluidised bed. A safety valve limits the reactor pressure.

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  Applied Thermodynamics

  Single Solar Collector System

  In this system a flat plate collector transmits the radiated heat of the sun to a heat transfer medium. The energy is transferred to a hot water circuit in a heat exchanger. A differential temperature controller with thermostat keeps the hot water temperature in the reservoir constant. The solar circuit is protected with an expansion vessel and a safety valve. This system is built using commercially available components. For adequate performance the system should be operated with direct irradiation by the sun.

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  Applied Thermodynamics

  Water Cooling Tower

  Cooling towers are a special type of counterflow heat exchanger. Warm water is sprayed from the top down through the column while airflows up through the column. Cooling is predominantly due to the evaporation of the water. The amount of water evaporated is measured. A fan supplies a variable cooling airflow. All important process parameters including the water flow rate are measured electronically and displayed. The measured values can be transferred to a PC for analysis and further processing. A data acquisition card and software are included. Four further cooling columns are available as accessories.