Heat loss is greatest at a specific radius of insulation over a cylinder. The component is a G.I. pipe with plaster of Paris insulation applied to the exterior surface. There are four pipes available, each with a heater and input control. Common voltmeters and ammeters are used to measure the input to heaters. By adjusting the input to heaters, it is demonstrated that the critical radius of insulation is a ratio of thermal conductivity to the outside heat transfer coefficient.

Experimental Objectives

• This classroom experiment is designed to demonstrate clearly the effect of small wire radius on insulated and uninsulated-wire heat transfer rate

Specifications

• 4 Nos GI Pipes with electrical heater inside
• Insulation over the pipes of different thickness.
• 4 Nos Dimmerstat to control heater input  
• A voltmeter and ammeter to measure inputs to heater.
• Digital temperature indicator to measure temperatures across insulation.
• Necessary switches and controls.

Required Other Items but not Included with above supply

• 230 V 5 Amp AC Supply with earthing connection.
• Floor Area of 1 m. X 1 m X 1.5m. height.