What is condenser vacuum?

What is condenser vacuum?

Process vacuum condensers are an integral part of a vacuum system. So often, a process vacuum condenser is considered stand-alone equipment, with little consideration given to how best to integrate it into a vacuum system. Common practice has the vacuum condenser specified as just another heat exchanger.

Why is vacuum needed?

Since many materials are subject to chemical reactions with air, it becomes necessary to remove molecules from the vicinity of the surface being processed. In others, the entire process would take place under vacuum to protect the material from chemical reaction.

Why vacuum is created in steam turbine?

Vacuum applies to steam turbines because the pressure of saturated vapour above available cooling water is well below 1 bar (typically 17 mbar at 15°C ambient).

Does condensation cause vacuum?

When matter turns from its gas phase back into its liquid phase, the molecules take up much less space and exert far less pressure. In fact, the condensing steam creates a partial vacuum—a region of much lower pressure than that of the surrounding atmosphere—inside the bottle.

What are the reason for low vacuum?

Low vacuum can be caused by low compression, intake leak or tight valves. The gauge needle bounces around a lot-uneven compression if the vacuum reading fluctuates within the normal range.

Where is vacuum used?

Where are Vacuum Pumps Used? Vacuum Pumps can be used in a wide variety of industries and applications to remove air and gas molecules from a process including the food and beverage industry, semiconductor and electronics industry, pulp and paper, medical, plastics and woodworking to name but a few.

What is the effect of high vacuum in turbine?

Re: Effect in steam turbine due to high vaccume in condensor Increasing the pressure in the condenser reduces the pressure across the turbine, which will reduce its output.

Can water create a vacuum?

Due to gravity, water begins flowing through the hose, creating a vacuum.

What happens to moisture in a vacuum?

Originally Answered: What happen with water in vacuum? It will boil, freeze, and sublime. Once the air pressure is reduced low enough, water will boil at room temperature. That process causes it to become colder, until it literally boils and freezes simultaneously (this is known as the triple point).

What happens when a condenser loses its vacuum?

A common cause of poor condenser vacuum is excessive air ingress or leakage. Any fall in condenser vacuum would have consequent rise in turbine heat rate vis-à-vis plant heat rate. As a result, cost of power generation would increase with eventual loss in revenue earning.

How is a vacuum created in a condenser?

As per theory when 1 kg of steam is converted in 1 kg of water, there specific volume ratio will be 1/1800.So when steam is converted in water volume will reduce.Vacuum is automatically created. But to maintain vacuum in condenser we need Ejector or Vacuum pump.

Why is a vacuum pump needed in a power plant?

But to maintain vacuum in condenser we need Ejector or Vacuum pump. And also efficiency of steam turbines in a power plant directly correlates to the pressure of the steam that exits the turbine. A shell and tube condenser is typically installed to capture and condense steam exiting the turbine.

Why are condensers used in steam power plants?

Another advantage of the condenser is that the steam condensed may be recovered to provide a source of good pure feed water to the boiler and reduces the water softening plant capacity to a considerable extent. Why Low Pressure or Vacuum at Condenser: The maximum possible thermal efficiency of the power system is given by (T1-T2)/T1

How does a drop in a vacuum lead to more steam flow?

A drop in vacuum, implies that from somewhere air is getting inside the condenser/ cooling water flow reduction/increase CW temperature/issues with Steam ejector-Vacuum pumps. And when ever there is drop in vacuum, TO MAINTAIN SAME LOAD, inlet steam flow has to be increased.