Thermodynamics > Heat transfer

TH 320 FREE AND FORCED CONVECTION

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The unit is used for studying heat transfer by free and forced convection in a vertical duct.

A heating surface is attached to the middle of the duct. Three types of heating surfaces are available i.e. vertical flat plate, plate with cylinders, and finned plate. A front window is provided for visual observation of the heating surface. Air enters the duct at the bottom duct with flow straightener and escapes via the top. A fan is attached to the top of the duct to induce forced convection. Air velocity is measured by a thermal probe anemometer. Temperatures of hot surface and of air at different points in the duct are measured by thermocouples.

A service module provides power supply, heater control unit, and measuring instruments.

Instruction manual is also included.

  • Principles of free and forced convection.

     

  • Heat transfer in flat plate, cylindrical and finned surfaces.

     

  • Temperature distribution on cylindrical and finned surfaces. 

     

  • Outlet air temperature distribution.

     

  • Determination of Reynold, Nusselt and Prandtl numbers.

     

  • Calculations of heat transfer coefficient, efficiency and heat transfer rate.

  • Duct
  
- Cross section: 120 x 120 mm 
  • Heater
  
- Capacity: 3 x 320 watts 
  • Heat transfer area of surfaces
  
- Flat: 00 cm2 
- Cylindrical: 750 cm2 (approx.) 
- Finned: 2000 cm2 (approx.) 
  • Fan with speed control unit
: Maximum flow rate over 3.0 m3/min 
 : Maximum air velocity over 3.0 m/s 
  • Measuring instruments
  
 - Hot wire anemometer with temperature digital display 
- Sensors with digital display: Voltage and current of input power 
 : Temperatures of air inlet and outlet, heater and for heated surfaces 
 
  • Heater surface temperature limit unit (not more than 100°C)
 
  • Power supply
: 220 V, 1 Ph, 50Hz. Other power supply is available on request. 

Net (unpacked) shipping dimensions WxLxH  : 40 x 65 x 135 cm

Net weight  : Approx. 35 kg

  • TH320S
Learning Software
 to support both online/offline training with data calculation and analysis by manual data entry from analog measuring instruments.
  • TH320-050
Computer Interface (computer not included)
 This includes TH320S and significant sensor(s) instead of analog measuring instrument(s), data acquisition (capture, display, graph and/or data export),
 additional software function for real-time data logging with computer interface unit and WiFi feature for data logging and real-time display remotely on smartphone (iOS and Android)
  • TH320-060
Computer Control (computer not included)
 This includes TH 320-050 with the additional accessories for control function and additional software function for equipment controls by computer

 

  • TH320S
Learning Software
 to support both online/offline training with data calculation and analysis by manual data entry from analog measuring instruments.
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