The cylindrical boiler is filled with a known quantity of water, then heat is given through the resistance. Heat is supplied to the water in the boiler under steady-volume rather than steady-pressure conditions. The Computerized Marcet Boiler is designed to determine the corresponding temperature and pressure values for wet saturated steam at all pressures ranging from atmospheric up to 17 bar. The liquid gradual evaporation will thus cause pressure - and therefore the saturation temperature - to increase in the boiler enclosed space and the values are visualized on digital indicators. Moreover, the transducers and the dedicated software allow the data acquisition of the main thermodynamics quantities and to obtain as a table or as a graph, the acquired values and the thermodynamic calculated quantities.
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The Marcet Boiler includes a special-purpose glass window. It allows students to see the internal construction of the vessel, to see the boiling process and to check the water level. The electrically-heated boiler holds water. As the water temperature increases, so does the pressure in the boiler. The apparatus consists of a rigid frame containing an insulated pressure vessel and an instrumentation and control unit. The Marcet Boiler is a simple experiment to show the relationship between pressure and temperature for saturated steam for comparison with published results. The frame also has extra space for the optional interface. A digital display shows the values in both SI and traditional units. A transducer and a thermocouple measure the boiler pressure and temperature.
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The measured value of the slope of the graph (dT/dP)SAT obtained from the practical results can be compared with corresponding values calculated from the data in steam tables the German Physicist and one of the founders of Thermodynamics was instrumental in deriving the relevant Clausius-Clapeyron relationship. Marcet Boiler has been developed for investigating the relationship between the pressure and temperature of saturated steam, in equilibrium with water, at all pressures between atmospheric and 17 bar (250 lb/in²).
Features:
Boiler Lagged To Permit Rapid Heating And Arranged For Bench Mounting
Electrically heated boiler fabricated from heavy duty steel section
Supplied complete with safety valve, pressure gauge and water cock
Measuring a vapour pressure curve for saturated vapour
Bourdon tube pressure gauge to indicate pressure
Digital temperature display
Boiler with insulating jacket
Temperature limiter and safety valve protect against overpressure in the system.
Measuring a vapour pressure curve for saturated vapour
Bourdon tube pressure gauge to indicate pressure
Digital temperature display
Boiler with insulating jacket
Temperature limiter and safety valve protect against overpressure in the system.
