Pasco TD-8572 HEAT ENGINE_ GAS LAW APPARATUS Manuel d'utilisateur télécharger pdf (Page 7)

012-06014C Heat Engine/Gas Law Apparatus

HEAT ENGINE

GAS LAW APPARATUS

Piston Dia.:

32.5mm±0.1

TD-8572

CAUTION:

Max. Pres.: 345kPa. Use Gases Only

DO NOT

Immerse in any Liquid

DO NOT Lubricate Piston or Cylinder

Pressure Port Mating Connector:

PASCO Part No. 640-021

Piston&Platform

Mass:

35.0g±0.6

Experiment 1: Operation of a Heat Engine

➀ Using the one-holed stopper, connect the tubing

with the one-way valves to the air chamber and

to a connecting port on the base assembly.

➁ Close the shut-off valve on the tubing from the

unused port.

➂ Set a mass of 100 to 200 g on the mass platform.

➀ Move the air chamber from an ice water bath to a

hot water bath. You will note that the air in the

chamber quickly expands through the tubing and

moves the piston up. Note also that the one-way

check valve in the tubing connecting the base

apparatus and the air chamber permits air to enter

the cylinder, while the other one-way check valve

prevents air from leaving through the branched

tube.

Equipment Setup

➤ Note: Use a maximum mass of 200 grams in

the experiment. A larger mass will cause the

valve seals to leak.

Procedure

➤ Note: The greater the temperature differential between the hot and cold water baths, the

greater the lift achieved through each cycle through them.

Figure 1.1. Setup for the Heat Engine

Close the shut-off

valve on the

tubing from the

unused port.

direction of

air flow

one-way check

valves

➁ Move the air chamber back to the cold bath and note that external air is sucked into the air

chamber through the one-way valve located at the end of the branched tube. Note also that the

one-way valve in the connecting tube prevents the air from escaping from the piston, so the

height of the piston remains the same.

➂ Repeat steps 3 and 4 until the mass has been completely lifted.

Equipment Required:

• Heat Engine/Gas Law Apparatus

• 100 – 200 g mass

• container of hot water

• container of ice water

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Pasco TD-8572 HEAT ENGINE_ GAS LAW APPARATUS Manuel d'utilisateur Page 7

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