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Why is vacuum in the condenser of such importance?
If you are talking about a condenser attached to a steam turbine, then a vacuum is important because it extends the usefulness of the steam in the turbine. As you probably know, steam begins to condense back into water at 212 deg at atmospheric pressure. However, in a vacuum condition, the boiling and condensing temperature is lower. Because the condenser is under a vacuum, steam exits the turbine and enters the condenser around 130 deg. This results in more power (mega watts).
Why used hogger and ejector in steam turbine?
A steam turbine condenser equipped with ejectors is usually fitted with two ejectors. The larger of the two is called the hogger and the smaller the huffer. Steam turbines are designed for efficiency and thus attempt to extract as much energy from the steam passing thru as is physically possible. Energy is extracted as both temperature and pressure decrease. The lower the temperature and pressure at the steam turbine's exhaust the more energy can be extracted from the steam. For this reason it is desirable for the steam turbine condenser (the exhaust) to be at the lowest temperature and pressure possible. The hogger, or hogging jet, is a large steam powered ejector that causes the steam condenser to operate under a near perfect vacuum whilst the steam turbine is in the start-up phase. In steady state operation the cooling effect of the condenser cooling water of the steam causes the condenser to operate under a nearly self sustained vacuum. The hogger is necessary in the start-up phase to prevent steam from condensing to water in the final stages of the turbine before the steam flow and cooling effect of the condenser can establish vacuum. The huffer or huffing jet runs continuously whilst the turbine is operating to remove any non-condensable gasses (i.e. air) that might leak into the condenser. It is nearly impossible to perfectly seal a condenser and turbine from air-in leakage. It should be noted that modern, large steam turbines do not employ steam ejectors to establish and maintain condenser vacuum. Modern designs utilize motor driven mechanical vacuum pumps.
How does steam condenser work?
the work of the condensor is to condense the hot steam and change its state so that it can be used again in boiler
Should a power plant where the prime mover is a gas turbine be categorized as a thermal power plant?
No, a power plant that uses fossil fuels such as gas or coal, cannot be classified as a thermal power plant. A thermal power plant uses the heat from deep within the earth, combined with water to create steam, which then powers the turbines.
What are reasons for over speed tripping of steam turbine genarator in a combined cycle power plant?
wHAT??
What does a condenser in a coal-burning power plant do?
A condenser cools the steam from the turbine exhaust so it can be converted back to liquid water. This allows it to be used over and over again.
What has the author George Frederick Gebhardt written?
George Frederick Gebhardt has written: 'Steam power plant engineering' 'Steam power plant engineering' -- subject(s): Steam power plants
Why condenser is used in boiler or steam power plant?
A power plant of the conventional steam turbine/generator type, whether using fossil fuel or a nuclear reactor, operates by pumping feedwater at high pressure into the steam raising units, the steam is admitted to the turbine which has various stages. At the high pressure end the rotor blades are short but they get progressively longer as you go down the machine, because the steam is expanding to a lower pressure so has a greater volume. At the back end where the steam comes out of the turbine, you will get maximum power and hence maximum efficiency of the plant by having a vacuum, so that steam below 100 degC is still doing useful work. Hence the condenser cooled by ambient temperature water from an outside source, where the below atmospheric pressure steam is condensed to water and returned to the feed pump inlets. So you may see the condenser as wasting heat, but in fact it considerably increases the overall efficiency. This steam/water cycle is called the Rankine Cycle and you will find an article on this in Wikipedia.
What is miniature steam power plant?
A miniature steam power plant is a place where willy wonka allowed his oompa loompas to stay on holidays.
Why is vacuum in the condenser of such importance?
If you are talking about a condenser attached to a steam turbine, then a vacuum is important because it extends the usefulness of the steam in the turbine. As you probably know, steam begins to condense back into water at 212 deg at atmospheric pressure. However, in a vacuum condition, the boiling and condensing temperature is lower. Because the condenser is under a vacuum, steam exits the turbine and enters the condenser around 130 deg. This results in more power (mega watts).
How was the nuclear plant used?
The nuclear power plant is used in the following way:nuclear fission occur in the nuclear fuel producing heat energythe energy is transferred to the coolant producing steamthe steam spins turbines that moves the electric generator and thus producing electricity.the steam out of the turbines turns to water in the condenser and returns back to be heated again into steam and so on.the condenser gets its cooling water from the ultimate heat sink that could be sea. ocean, river, lakes, ...etc
Why you selecting surface condenser?
Surface condensers are used exclusively to condense steam in thermal power plants. The coolant used for condensing this steam is generally water.
What are the advantages and disadvantages of condenser?
A condenser is a device which condenses the steam at the exhaust of turbine. Condensers are classified in to two types.Such as (1) Jet condenser (2) Surface condenser It serves important functions. Such as 1. The condenser enables the recovery and recirculation of pure feed water into the plant. Thus, (i)The cost of water softening plant is reduced and (ii) It also saves the cost of fresh water to be supplied to the boiler.
What is the use of cooling tower in power plant?
first mention which power plant in steam pp out come of the steam is cooled after it again passes through into the turbine
What is used to carry steam and water in a power plant?
We see the wide use of pipe to carry steam and water in a power plant. Insulation is applied where necessary.
Which improvement to the steam engine made it efficient?
The additon of a condenser, which allowed condensation without the loss of heat in the piston
What is purpose of using Intermediate and Low pressure turbines in a thermal power station?
To obtain as much mechanical energy from the steam produced in the plant's steam raising units as possible, it is expanded through increasing sized turbine wheels, eventually expanding into a vacuum in the turbine condenser before condensing and returning to the steam cycle.
