Thermodynamics Energy when flashing water -- How much water will be vaporized?

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Keeskwaak
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Thermodynamics Energy, flashing water how much water will be vaporized
Hello all,
For a project I really need to know some number i can't seem to produce myself.

we are flashing water @75 degrees Celsius, the water after flash-cooling is 67 degrees constant pressure is 0.27 bar (absolute) flow rate is 15000 KG/per hour.

how much water is vaporized?

Help is much appreciated
 
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Please repost this in the homework help section, and follow the template/show your work (even if not actual homework it is a homework type problem). Thanks, thread locked.
 

FAQ: Thermodynamics Energy when flashing water -- How much water will be vaporized?

What is the definition of "flashing" in the context of thermodynamics?

Flashing refers to the rapid vaporization of a liquid when it is suddenly exposed to a lower pressure environment, causing part of the liquid to instantly convert into vapor. This process occurs because the liquid's temperature is above the boiling point at the reduced pressure.

How do you calculate the amount of water vaporized during flashing?

The amount of water vaporized can be calculated using the mass and energy balance equations. Specifically, you need to know the initial temperature and pressure of the water, the final pressure, and the latent heat of vaporization. The basic formula involves the energy balance: Q = m * L, where Q is the heat energy, m is the mass of water vaporized, and L is the latent heat of vaporization.

What factors influence the amount of water that will be vaporized during flashing?

The amount of water vaporized during flashing is influenced by several factors including the initial temperature and pressure of the water, the final pressure after flashing, the specific heat capacity of water, and the latent heat of vaporization. The greater the difference between the initial and final pressures, the more water will be vaporized.

Why is latent heat of vaporization important in the flashing process?

Latent heat of vaporization is the amount of energy required to convert a unit mass of liquid into vapor without changing its temperature. It is crucial in the flashing process because it determines how much energy is needed for a certain amount of water to vaporize. The higher the latent heat, the more energy is required to vaporize the water.

Can all the liquid water be vaporized during the flashing process?

No, not all the liquid water can be vaporized during the flashing process. The extent of vaporization depends on the initial conditions and the energy available. Typically, only a portion of the water will vaporize, as the remaining liquid will reach a new equilibrium temperature corresponding to the lower pressure.

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