The apparatus consists of three concentric pipes mounted on suitable stand. The

space between innermost and the middle pipe is fifed with a lagging material and the

space between  the  middle  and  the  outer  most  is  filled  with  and  other lagging

material. The lagged pipe is heated with a cartridge heater inserted at the axle length

of the pipe. Voltmeter  and ammeter on  the panel can measure  the  input  to the

heater. The intermediate  temperatures can be measured by  the thermocouples

attached at the surfaces of the pipe. Thus the resultant conductivity of the materials

can be found out.

SPECIFICATIONS:

1.  Pipes

  a)  Gl pipe (inner) 6 cm(Outer Dia)

  b)  Gl Pipe (Middle)8.5 cm(Mean Dia)

  c)  GI Pipe (Outermost) - 10.7 cm. (inner Diameter)

  d)  Length of pipes 1 Meter.

2.  Heater :Nichrome wire cartridge heater placed centrally,

3.  Control Panel :

  a)  Dimmerstat

  b)  Voltmeter (250V)  

  c)  Ammeter (2A)

4.  Multichannel Digital Temperature Indicator ranging (0 - 300 C)