Multi Heat Transfer Trainer Unit (Conduction/Convection/Radiation)
The equipment should be a compact benchtop device with basic control surface and below each heat transfer module should be connected to the main system individually as requirement.
1. Linear heat conduction module
2. Radiation heat transfer module
3. Free and forced convection heat transfer module
Scope:

• Linear heat conduction module
• To study the principles of linear heat conduction and to allow the conductivity of various solid conductors and insulators to be measured.
• Facility to interchange samples of different materials, different diameters and different insulating materials that allow to demonstrate the area effects, the conductivity, and the combinations in series in the heat transfer process.

Radiation heat transfer module:

• Should be a bench-top unit to demonstrate the laws of radiant heat transfer and radiant heat exchange
• Free and forced convection heat transfer module
• To study the efficiency of different exchangers, analyzing the heat transfer coefficients of each of the exchangers exposed to different airflows

Layout:

• Anodized aluminium frame and panels made of painted steel for all modules
• Should be a compact benchtop package that is ideal for field, factory, or academic use
• Each heat transfer module should be individually connected to the basic electronic control surface

Technical specifications:

• All sensors, with their respective signals, should properly manipulated from -10V. to +10V. computer output.
• The unit control elements must be permanently computer controlled,
• All parameters involved in the process should be simultaneously visualized in the computer
• Real time curves representation about system responses.
• Three safety levels,

1. One mechanical in the unit
2. One electronic in the control interface
3. One in the control software

• All the process data and results should be stored in a file.
• Graphic representation, in real time, of all the process/system responses
• All the actuators’ values could be changed at any time from the keyboard allowing the analysis about curves and responses of the whole process.
• All the actuators and sensors values and their responses should displayed on only one screen in the computer.
• Shield and filtered signals to avoid external interferences.
• Real time PID control with flexibility of modifications from the computer keyboard of the PID parameters, at any moment during the process.
• Real time PID and on/off control for pumps, compressors, heating elements, control valves, etc.
• Real time PID control for parameters involved in the process simultaneously.
• Open control allowing modifications, at any moment and in real time, of parameters involved in the process simultaneously.
• Possibility of automatization of the actuators involved in the process.
• Linear heat conduction module Basic Sections

1. Input heat section.
2. Electric heater.
3. Refrigeration section with a surface cooled by water.
4. Interchangeable central sections:

• With brass of 25 mm of diameter.
• With brass of 10 mm of diameter.
• With stainless steel of 25 mm of diameter.
• Should be equipped with water flow regulation valve.
• Temperature sensors: “T” type (high precision) - Total 19
• Heating section: 17
• Refrigeration section: 04
• Central sections: 04
• For all central sections: 03*3
• Temperature sensor at the water inlet of the unit.
• Temperature sensor at the water outlet of the unit.
• The power of the heating element should regulate from the electronic console (0-100%).
• Power measurement can be done from the electronic console. Radiation heat transfer module
• This unit should consist of a metal plate with a heating element at one side and a lamp in another side.
• Heating element should be ceramic.
• Lamp 150 W, with diffuser.
• The unit should be provided with accessories for light experiments and radiation experiments
• Luxmeter that allows to measure the intensity of the light:
• Scale               Resolution    Accuracy
• 0 to 1999 lux        1 lux   
• 2000 to 19990      10 lux  
• 20000 to 50000     100 lux          8%
• Selection of light : Day, Tungsten, fluorescence or mercury
• Sensor : Photodiode with filter of adjustment of filter
• Sample frequency : 0.4 s
• Work temperature : 0 to 50 ºC

Filters:

• Three Grey Neutral Density A153 filters.
• Grey Neutral Density A152 filter.
• Grey Neutral Density A154 filter.

Radiation accessories:

• Radiometer (50 x 50 mm, 5μv (w/m²) or above).
• Planes surfaces. They are elements for studying the radiation and each one contains one temperature sensor
• Two black bodies.
• Variable slit or aperture.
• Seven temperature sensors, “T” type (high precision).
• The power of the heating element should regulate from the electronic console (0-100%).Free and forced convection heat transfer module
• Should be equipped with eight or more temperature sensors, “T” type (high precision):
• Two temperature sensors measure the air temperature at the inlet and outlet of the area of heat exchange.
• Temperature measurements, at different distances of the base of the pins and fins exchangers, should made by other 5 temperature sensors that are introduced by one side of the tunnel.
• Maximum working temperature: 120 ºC.
• Flow sensor for measuring the air flow generated in the tunnel.

Three aluminum exchangers:

1.  Flat heat exchanger
2.  Pins heat exchanger.
3.  Fins heat exchanger.

• There should be a heating element for each exchanger. The power of the heating element is regulated from the electronic console
• Variable speed fan, computer controlled, which generates air flux through the tunnel, range: 0 – 1200 l/min, regulated from the electronic console (0-100%).

Components

• Control Interface
• Linear heat conduction module
• Radiation heat transfer module
• Free and forced convection heat transfer module
• Cables and accessories, for normal operation.
• Necessary tool kits, supplementary parts
• A Compatible computer (PC) should be supplied
• Processor: 7th Gen. Intel Core i5 -7400 (6MB Cache) 3.0 GHz recommended
• 16GB DDR4 RAM recommended
• 1TB 5400 RPM SATA SSD recommended
• OS: Windows 10 (64bit)
• Keyboard /Mouse
• Ports (recommended specs)
• 4 x USB 3.0
• HDMI-out
• DisplayPort 1.2
• 2 x Thunderbolt 3 (supports Type-C, USB3.1, DisplayPort, PS)
• Gigabit Ethernet, audio out
• Display: 21.5” LED monitor is recommended

Power Supply

• Available Laboratory power sockets - 230V, 50Hz