HEAT TRANSFER THROUGH LAGGED PIPE-

HEAT TRANSFER THROUGH LAGGED PIPE

EXPERIMENTATION:-

1.       To estimate the actual rate of heat transfer through composite Cylinders from the measured interface temperature with the known value of thermal conductivity of two insulating material.

2.       To determine the effective thermal conductivity of composite Cylinders

3.       To plot the theoretical temperature profile with in the composite Cylinder

DESCRIPTION:-

Pipe lagging is the process of providing insulation to prevent heat diffusion from pipe. The insulating material is normally wrapped around pipes.

The apparatus is designed to study the lagging phenomenon. Three concentric pipes are arranged between two supports. The gap between the pipes is filled compactly by two different insulating materials and heater is provided at the center of inner pipe. Temperature at various points is measured with thermocouples.

Specifications:-

Ø  Test Bar: 400 mm long / 25 mm Dia./ Brass

Ø  Outer Shell Dia.: 125 mm

Ø  Middle Shell Dia.: 75 mm

Ø  Inner Shell Dia.: 25 mm

Ø  Control panel comprising of :

Ø  Voltmeter - 0 - 100/200 volts

Ø  Ammeter - 0 - 2 amp

Ø  Dimmer stat 0-4A,0-260 V.

Ø  Heater-Nichrome heaters bend type.

Ø  Temperature indicator 0-300˚C channels with cold junction compensation.

SERVICE REQUIRED:-

1.230 V.AC. Stabilized supply with the product.

2. Space area of 0.6 m x 0.5m at working height

An instruction manual is supplied along with the equipment which describes the apparatus and procedure of experimentation.