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From what I have read, it uses the heat of vaporization to create a vacuum due to condensation.
So as steam condenses its volume is reduced. This creates a vacuum which increases the pressure drop accross the turbine. The larger the pressure drop accross the turbine, the better.
I'm not an expert tho...
http://books.Google.com/books?id=7PeSdVhFhxgC&pg=PA41&lpg=PA41&dq=why+condenser&source=web&ots=HTeczt_DhL&sig=QS5YkcFzMQkTomz5y5FMb_Swsio&hl=en&sa=X&oi=book_result&resnum=1&ct=result
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What should be the possible reasons of vacuum drop of turbine?
In the low pressure side of a steam turbine, the vacuum is maintained by the condensation of steam in the condenser. At high loads, the condenser may not satisify the demand, allowing steam to remain gaseous for a longer period of time. This can cause pressure to rise.
Will new wharehouses industrial park being built right next door cause property values to drop?
Yes, a new warehouses industrial park being built right next door will cause property values to drop. People do not want to buy a home that is close to an industrial park as noise and pollution will increase.
How did James watt invent the steam engine?
P I think Watt was not the first to invent THE steam engine, although his model probably had improvements, etc. Ever see a drop of water on a stove top? It can move a little peice of wood. Perhaps that was the first steam engine? +++ Sorry - although you start correctly, the rest is guess-work very wide of the mark. No drops of water moving bits of wood, at all. ' In Watt's day, the only practical steam-engines were those invented some decades previously by Newcomen. These were purely reciprocating machines for driving mine-drainage pumps, and though they worked they were dreadfully inefficient because their power stroke was forced not by steam, but by atmospheric pressure against a partial vacuum created by using a water jet to condense steam in the cylinder. ' James Watt analysed the problem and realised that moving the condensing to a separate vessel, so keeping the power cylinder hot, made the engine much more efficient - costing much less to run. He was also one of those who found how to make the steam-engine rotative, so it could drive a much greater range of machinery than just the simple water-pump.
Why was there a sharp drop in the union membership during the 1920's?
a growing feeling against unions, together with strong pressure from employers and the government...
When the Dow Jones Industrial Average began to drop sharply in late October 1929 investors bought shares of stock bankers pardoned personal loans and mortgages Hoover warned American to stop investing?
gaYAYASYG
What should be the possible reasons of vacuum drop of turbine?
In the low pressure side of a steam turbine, the vacuum is maintained by the condensation of steam in the condenser. At high loads, the condenser may not satisify the demand, allowing steam to remain gaseous for a longer period of time. This can cause pressure to rise.
What can happen if you had a sudden drop on boiler steam pressure without a corresponding drop in boiler water temperature?
BOILER EXPLOSION- Caused by a sudden drop in pressure (failure on the steam side) without acorresponding drop in temperature.
What is difference bw condensing and non condensing steam turbines?
A condensing turbine uses all the energy from the steam going from high pressure turbine to secondary turbine to condensing turbine then sends the condensate back for reheating. where a non condensing turbine just uses the high pressure aspect of the steam then returns the low pressure stream back to be reheated. Condensng turbines utilises the entire available drop from high pressure to the vacuum in the condenser; a back pressure turbine only utilises only the top part, whereas an exhaust steam turbine utilises only th bottom part of the pressure drop. Hope that helps.
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 do you mean by condenser airside pressure drop?
when water vapour condenses and forms clouds whichthen produces an air pressure which produces precipitation like a water cycle.
What will happen if you put steam in a balloon then put it in the refrigerator what will happen?
As the steam cools, the pressure will drop, and the balloon will get smaller. ------------------------- it pops i tried it loads
Why vacuum is created in condenser on steam turbine?
Firstly, vacuum is being created in turbine exhaust and condenser rather than being required. It is created to reduce the back-pressures and to improve the turbine efficiency. Also, with vacuum the designers can design large size last stage blades of LP turbine for maximizing the turbine output.
What is the compounding steam turbine?
Velosity compounding:This is a combination of pressure-velocity compounding. Lets say you have superheated steam coming out of the boiler at 70 bar, which is suppose to drive a steam turbine. How many stages of blading required to reduce the pressure to acceptable exhaust pressure so that it does not overheat the condenser?Remember, when you reduce the pressure the kinetic energy increases so is the steam speed. In order to reduce the pessure you must have pressure compounded arrangement. In order to reduce speed you must have velocity compounded. So what is pressure componded?This is an array of nozzles and impulse blades laid out accordingly to mainly reduce the steam pressure as it pass through the respected stages.Notice the pressure drop gradually as it pass through a fixed blade stage, but the speed increases as it pass the same stage. The velocity compounded which is arranged so that you have nozzles,moving and fixed blades laid accordingly. As it enters the nozzle the pressure is dropped, steam velocity inctreased.Then it pass through moving blades which reduces the steam velocity but maintain steam pressure.Then the steam is pass through guide blades or fixed blades where further reduction in velocity but none in pressure.Last stage is moving blades where velocity is reduced but pressure is maintained. How is pressure-velocity compounding accomplished? Answers: It is a combination of pressure compounding and velocity compounding. Steam is expanded partially in a row of nozzles whereupon its velocity gets increased. This high velocity steam then enters a few rows of velocity compounding whereupon its velocity gets successively reduced. The velocity of the steam is again increased in the subsequent row of nozzles and then again it is allowed to pass onto another set of velocity compounding that brings about a stage-wise reduction of velocity of the steam. This system is continued.
Why hotwell level is maintained in condenser?
High hotwell level will get the cooling water tubes of condenser submerged in the condensate hence cooling efect will be reduced consequentaly vacuum will drop. Low hotwell level will lead to low suction pressure of Condensate Extraction Pump hence it may lead to cavitation.
Reasons of positive axial shift in steam turbine?
Sudden change of load Sudden drop of vacuum Sudden drop of Main steam temperature.
When was Pressure Drop - song - created?
Pressure Drop - song - was created in 1970.
What is mean by pressure drop how can you measure the pressure drop?
Use a delta-p gauge
