Knowledge of the gas laws is a fundamental requirement of any training course of in thermodynamics. Air is used as a test gas and perfect gas laws can be observed through two transparent vessels. A small scale bench top apparatus designed to allow experimental investigation of the first law of thermodynamics using the perfect gas law and the expansion of air. The unit consists of two vessels connected by a large bore pipe and valve together with an integral air pump. The pump can be used to both pressurized one vessel and evacuate the other. Additional valves allow the vessels to be used in isolation; venting to or from atmosphere and in a combined arrangement where the pressurized vessel can vent into the evacuated vessel.
Experiments
- Investigation of the First law of Thermodynamics.
- The second Law of Thermodynamics and its Corollaries
- Observation of the Pressure, Volume, Temperature Relationship for Air.
- Observation of the transient responses to different rates of change in a process.
Specifications
- A small scale bench top unit to allow experimental investigation of the first law of thermodynamics using the perfect gas law and the expansion of air.
- The unit consists of two vessels connected by a large bore pipe and valve together with an integral air pump. The pump can be used to both pressurize one vessel and evacuate the other.
- Additional valves allow the vessels to be used in isolation; venting to or from atmosphere and in a combined arrangement where the pressurized vessel can vent into the evacuated vessel.
- Fast Response thermocouple sensors located in each vessel record the air temperatures and individual pressure transducers record the chamber pressures.
- The vessels and interconnecting pipe work are constructed from impact resistant plastic and for operator safety pressure switches limit the operating pressures to safe levels.
- The unit is consist of Control Box which ditigaly display the air temperatures in the vessels.
- The larger vessel has an approximate volume of 18 litres and the smaller approximately 10 litres.
- Pressure Relief valves to avoid over-pressurization in the pressurized vessel.
- Air pump, Manual or Computer controlled (optional) allows the pressurization and evacuation of the vessels.
- This unit monitor pressure temperature changes continuously using a computer (PC) (optional).
- The vessels can be operated singly or in combination allowing processes whereby air flows from pressurized vessel to atmosphere, from atmosphere to an evacuated vessel or from a pressurized vessel to an evacuated vessel.
- 2 Temperature sensors, one in each vessel, range: -100~400 oC.
- 2 Pressure transducers, one in each vessel (if DAQ selected).
- 2 Pressure gauge, in each vessel, range: -1~4 bar.
