Frictional Losses in the Hot Air Engine

The Hot-Air Engine Friction Work Experiment is designed to determine the work of friction in a hot-air engine by measuring the temperature rise of the cooling water. During the experiment, the hot-air engine is driven by an electric motor with the cylinder head open, allowing the frictional losses to be evaluated independently of the engine's thermal cycle. The apparatus provides an effective demonstration of mechanical losses and energy conversion in thermodynamic systems. Manufactured by Atico Export India.

Principle

The experiment is based on the conversion of mechanical energy into heat due to friction. The hot-air engine is driven externally by an electric motor while the cylinder head remains open. The friction generated within the engine components produces heat, which is transferred to the cooling water. By measuring the increase in the cooling water temperature, the work of friction can be determined.

Objectives

• Determine the work of friction in a hot-air engine.
• Measure the temperature rise of the cooling water due to friction.
• Study mechanical energy losses in a thermodynamic system.
• Understand the conversion of mechanical energy into heat.
• Analyze the frictional characteristics of a hot-air engine.

System Components

Hot-Air Engine :

• Quantity: 1

Power Measurement Accessories :

• Quantity: 1 Set

Experiment Motor :

• Quantity: 1

Motor Control Unit :

• Quantity: 1

Electronic Counter :

• Quantity: 1

Fork-Type Light Barrier :

• Quantity: 1

Multi-Core Cable :

• 6-Pole
• Length: 1.5 m
• Quantity: 1

Mechanical Hand-Held Stopwatch :

• Quantity: 1

Thermometer :

• Range: -10°C to +50°C
• Resolution: 0.1 K
• Quantity: 1

V-Shaped Stand Base :

• Quantity: 1

Stand Rod :

• Length: 25 cm
• Diameter: 12 mm
• Quantity: 1

Plastic Beaker :

• Quantity: 1

Immersion Pump :

• Quantity: 1

Low Voltage Power Supply :

• Output: 3 / 6 / 9 / 12 V
• Quantity: 1

Silicone Tubing :

• Diameter: 7 mm
• Length: 1 m
• Quantity: 2

Wide-Mouthed Can :

• Capacity: 10 L
• Quantity: 1

Motor-Driven Operation :

• Hot-air engine is driven using an external experiment motor.

Cooling Water Measurement :

• Temperature rise of the cooling water is measured accurately.

Accurate Speed Measurement :

• Fork-type light barrier and electronic counter enable precise rotational speed measurement.

Complete Experimental Setup :

• Includes all essential accessories for friction work determination.

Educational Design :

• Ideal for demonstrating frictional losses and energy conversion in thermal machines.