Features
Safe and Suitable For Unsupervised Student Operation.
Optional (Renewable Energy) Solar Option Available.
Responds Rapidly to Control Changes.
Negligible Operating and Maintenance Costs.
Description
The vapour generator (or boiler) consists of a coiled copper tube through which pressurised SES36 solvent flows.The coil is immersed inan insulated tank containing hot water provided by either an electricresistance heater which is housed within the tank, or by the optionalsolar energy collector mounted in a suitable position outside.The vapour produced then flows through a convergent- divergent nozzle andimpinges on the blades of a single stage impulse turbine.The turbine ismounted on the condenser and the exhaust vapour from it passes directly over the water cooled coil. The condenser, which has a highstrength glass shell, is partly flooded to provide the SES36 solvent witha few degrees of sub-cooling.The sEs36 solvent is chosen for its lowpressure-temperature characteristics allowing safe operation in glass.An internal fixed speed positive displacement pump draws condensedsolvent from the bottom of the condenser and delivers it, via a controlvalve and fow meter, to the vapour generator for re-evaporation.Asmall quantity of lubricating oil mixed with the SES36 solvent and isseparated from the high pressure vapour line and fed to the turbinebearings. Maximum power is obtained at about 15,000 rev.min-1.Asimple band brake dynamometer applies and measures the resistingtorque to the turbine shaft.An optical sensor senses the rotationalspeed of the turbine and this is displayed on a digital meter.
Related LawslApplications
Chemical Engineering
Marine Engineering
Mechanical Engineering
Pant and Process Engineering
Environmental Engineering
Learning capabilities
Clear and easily observed demonstration of a classic Rankine Cycle(Boiler，Turbine,Sub-atmospheric Condenser and Feed pump)
Production of TorquelSpeed and Power/Speed curves for a singlestage impulse turbine.
Use of property charts or tables and the application of the First Lawof Thermodynamics to produce energy balances
Determination of thermal efficiency at a range of turbine inlet andexhaust pressures.
Comparison of performance with the Rankine Cycle. including theexternal isentropic efficiency of turbines).
Estimation of total frictional losses in turbines.
