Heat Transfer Lab Equipment

Natural Convection Apparatus

The setup consists of a brass tube fitted in a rectangular duct in a vertical fashion. The duct is open at the top and bottom, and forms an enclosure and serves the purpose of undisturbed surrounding. One side of the duct is fitted with a transparent good quality Acrylic window for visualization. An electric heating element is kept in the vertical tube that in turns heats the tube surface. The heat is lost from the tube to the surrounding air by natural convection. The temperature of the vertical tube is measure by Temperature Sensors and displayed by a Digital Temperature Indicator with multichannel switch. The heat input to the heater is measured by a Digital Ammeter and a Digital Voltmeter and is varied by a Variac. The tube surface is polished to minimize the radiation losses.


  • To demonstrate the super thermal conductivity of Heat Pipe and to compare its working with best conductor i.e.
  • Copper pipe & Stainless steel pipe as same material of construction.
  • To plot the temperature v/s time response of three pipes
  • To plot the temperature distribution along the length of three pipes
Natural Convection Apparatus
01. S.s. Cylindrical Tube
a. Diameter:40mm
b. Length:400mm
02.Measuring Instruments
a. Digital Voltmeter Range:0 to 300 V
b. Digital Ammeter & Range:0 to 10 Ampsc. Digital
Temperature Indicator with Selector switch
Range:Ambient to 199.9 Deg. C
03. Thermocouples:
a. Type:Cr. AI
b. Length:1 Mtr.
05. Electronic Dimmer:1 No.

Note: The unit is self-contained in all respect except water And power to the unit

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