Lab 3 Marcet Boiler
EXPERIMENT 3
MARCET BOILER
1.0. OBJECTIVE
• To obtain a relationship between the pressure and temperature of saturated steam, in equilibrium with water, at all pressure between atmospheric and 10 bar (150 lb/in2). • To compare between calculated values from experiment data to the data obtained from steam table for vfg and hfg .
2.0. THEORY
Thermodynamics is defined as a study related to the transfer of heat and work between a system and the surrounding, undergoing a process causing any of the properties of the system change.
An ideal gas obeys the equation of state that relates the pressure, specific volume or density, and absolute temperature with mass of molecule and the gas constant, R.
However, real gas does not absolutely obey the equation of state. A few changes on the ideal gas equation of state allow its application in the properties of real gas.
When energy increases within water, the increasing of activities among the molecules enables the increase in the number of molecule escape from the surface until an equilibrium state is reached. The state of equilibrium depends on the pressure between the water surface and steam. At lower pressure, the molecules become easier leaving the water surface while less energy required in achieving the state of equilibrium (boiling point). The temperature where equilibrium occurs at a given pressure level is called saturated temperature.
At a given pressure, the temperature at which a pure substance changes phase is called the saturation temperature Tsat. Similarly, at a given temperature, the pressure at which a pure substance changes phase is called the saturation pressure Psat. This experiment explores the relationship between the saturation temperature and the corresponding pressure for water.
The water inside the boiler is heated up by the electrical resistance and starts to evaporate. As more water changes phase from liquid to vapor,
MARCET BOILER
1.0. OBJECTIVE
• To obtain a relationship between the pressure and temperature of saturated steam, in equilibrium with water, at all pressure between atmospheric and 10 bar (150 lb/in2). • To compare between calculated values from experiment data to the data obtained from steam table for vfg and hfg .
2.0. THEORY
Thermodynamics is defined as a study related to the transfer of heat and work between a system and the surrounding, undergoing a process causing any of the properties of the system change.
An ideal gas obeys the equation of state that relates the pressure, specific volume or density, and absolute temperature with mass of molecule and the gas constant, R.
However, real gas does not absolutely obey the equation of state. A few changes on the ideal gas equation of state allow its application in the properties of real gas.
When energy increases within water, the increasing of activities among the molecules enables the increase in the number of molecule escape from the surface until an equilibrium state is reached. The state of equilibrium depends on the pressure between the water surface and steam. At lower pressure, the molecules become easier leaving the water surface while less energy required in achieving the state of equilibrium (boiling point). The temperature where equilibrium occurs at a given pressure level is called saturated temperature.
At a given pressure, the temperature at which a pure substance changes phase is called the saturation temperature Tsat. Similarly, at a given temperature, the pressure at which a pure substance changes phase is called the saturation pressure Psat. This experiment explores the relationship between the saturation temperature and the corresponding pressure for water.
The water inside the boiler is heated up by the electrical resistance and starts to evaporate. As more water changes phase from liquid to vapor,