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A liquid or vapor is saturated when it is at the temperature and pressure where it would be in equilibrium with the other phase; saturated liquid at the boiling point or saturated vapor at the dew point. If the pressure is raised, the vapor will condense until the pressure is restored to the original pressure or all the vapor is condensed. If the pressure is dropped, a saturated liquid will boil until the pressure rises back to the original pressure or all the liquid has vaporized. If the temperature is increased, a saturated liquid will boil off completely unless the vaporized liquid raises the pressure enough to establish a new equilibrium. If the temperature is dropped, a saturated vapor will condense until the pressure has dropped enough to establish a new equilibrium.
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What is mean by saturated liquid and vapor?
Any addition of thermal energy to a saturated liquid will cause it to vaporize. Any subtraction of thermal energy from a saturated vapor will cause it to condense.
What is meant by saturated liquid vapor?
Any addition of thermal energy to a saturated liquid will cause it to vaporize. Any subtraction of thermal energy from a saturated vapor will cause it to condense.
What is wet vapor?
Wet Vapour is the region which contains a mixture of liquid and vapour. The liquid is saturated liquid and the vapour is saturated vapour. The temperature stays uniform until the entire phase change is complete.
Is there any difference between intensive properties of saturated vapor at a given temperature and the vapor of a saturated mixture at the same temperature?
Yes, there is a difference between the intensive properties of saturated vapor and the vapor of a saturated mixture at the same temperature. Saturated vapor is a pure phase at equilibrium, characterized by specific properties such as pressure, specific volume, and enthalpy. In contrast, a saturated mixture contains both saturated liquid and saturated vapor phases, leading to properties that depend on the quality (the ratio of vapor to total mass) of the mixture. Therefore, while both can exist at the same temperature, their intensive properties differ due to the presence of liquid in the saturated mixture.
What is the working principle of a condenser?
A condenser rejects heat to the environment to turn vapor into liquid. Ideally a vapor enters the condenser as saturated vapor, meaning it's at the boiling point. The vapor condenses and leaves the condenser at saturated liquid (also at the boiling temperature).
What is a direct expansion evaporator?
Refrigerant enters a direct expansion evaporator as a saturated liquid vapor mix and leaves as a superheated vapor.
What is evoaporation?
Evaporation is a type of vaporization of a liquid that occurs from the surface of a liquid into a gaseous phase that is not saturated with the evaporating substance. The other type of vaporization is boiling, which is characterized by bubbles of saturated vapor forming in the liquid phase.
Why is entropy of saturated liquid lower than saturated vapor for any pure substance?
Because to perform the change of state from the saturated liquid to saturated vapor ( at constant presure ) you have to add heat in the amount of the substance's evaporation latent heat Qev . At constant pressure, temperature will stay fixed at its saturation temperature and the increase in entropy will be (delta S)ev = Qev/Tsat where (delta S)ev is the entropy increment. Tsat is the saturation absolute temperature of the substance. And so the saturated vapor entropy is (delta S)ev larger than the saturated liquid entropy.
What causes water vapor to condense into liquid?
Water vapor condenses into liquid when the air surrounding the vapor cools down, causing the vapor to lose energy and transition into liquid form. This process is known as condensation and typically occurs when the temperature drops below the dew point, the temperature at which the air becomes saturated with water vapor.
What causes water vapor to turn back into liquid?
Water vapor turns back into liquid through a process called condensation, where the water vapor cools down and loses energy, causing the water molecules to come together and form liquid droplets. This can happen when the temperature drops, or when the air becomes saturated with water vapor.
What percent vapor is refrigerant when entering the evaporator?
Typically, refrigerant entering the evaporator is in a saturated state, meaning it is a mix of liquid and vapor. The exact percentage of vapor will depend on the pressure and temperature conditions at that point.
What is saturated gas temperature?
Saturated gas temperature is the temperature at which a gas would be in equilibrium with the liquid phase of the gas (or with the liquid phase of a component of the gas if it was a gas mixture).
