Determining the Efficiency of the Hot-Air Engine as a Heat Engine

The experiment P2.6.2.2 determines the efficiency of the hot-air engine as a heat engine. The mechanical work W exerted on the axle in each cycle can be calculated using the external torque N of a dynamometrical brake which brakes the hot-air engine to a speed f. The amount of heat Q2 given off corresponds to a temperature increase ΔT in the cooling water.

COMPONENTS OF EQUIPMENT SETS:

1	388 182	Hot-air engine
1	388 221	Accessories for hot air engine for power measurement
1	562 11	U-core with yoke
1	562 121	Clamping device with spring clip
1	562 21	Mains coil, 500 turns
1	562 18	Coil, 50 turns, extra-low voltage
1	575 471	Counter S
1	337 46	Fork-type light barrier
1	501 16	Multi-core cable, 6-pole, 1.5 m
1	531 120	Multimeter LDanalog 20
1	531 130	Multimeter LDanalog 30
1	313 17	Hand-held stop-watch II, mechanical
1	314 141	Precision dynamometer, 1 N
1	382 35	Thermometer, -10...+50 °C/0.1 K
2	300 02	Stand base, V-shaped, small
1	300 41	Stand rod, 25 cm, 12 mm Ø
1	300 42	Stand rod, 47 cm, 12 mm diam.
1	300 51	Stand rod, right-angled
2	301 01	Leybold multiclamp
1	590 06	Plastic beaker
1	342 61	Weights, 50 g, set of 12
1	501 45	Connecting lead, 19 A, 50 cm, red/blue, pair
3	501 33	Connecting lead, 32 A, 100 cm, black
1	388 181	* Immersion pump
1	521 231	* Low-voltage power supply, 3/6/9/12 V
2	667 194	* Silicone tubing, 7 mm diam., 1 m
1	604 313	* Wide-mouthed can, 10 l

Articles marked with * are not essential, we do however recommend them to carry out the experiment.

EXPERIMENT INSTRUCTIONS PLEASE CLICK HERE