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Monday, 31 March 2014

Advantages and Disadvantages of Open Cycle Gas Turbine

Advantages and Disadvantages of Open Cycle Gas Turbine Points : Advantages and Disadvantages of Open Cycle Gas Turbine Advantages
  1. But in case of open cycle system working fluid mix with the product of combustion land large amount of air is necessary in it and we can't used gas of higher density that is why this system part load performance is low that's why the closed cycle system. Is more advantages than open cycle system. If we are using gas (helium) as working medium therefore the size helium unit is combatively 1/3 smaller than open cycle's combustion chamber this thing reduce the size of the various component. Which is the main characteristic of the system is.
  2. But increase of open cycle system the working medium mix with the product of combustion so there is necessary the accumulation of carbon deposits on blade and nozzles of the turbine which get dusty the compressor therefore the periodic cleaning is must in open cycle system.
  3. Part load performance of open cycle system is low because there is a limit of admitting air in the compressor. Because air is heavy than helium.
Disadvantages
  1. In open cycle system the combustion chamber is lighter in weight and smaller in size with a high rate of heat release that's why the system is quit cheaper then closed cycle system.
  2. The combustion chamber of open cycle system is more efficient and suitable for large quantity of air.
  3. Cooling water is not needed to except in those turbine using intercooler. This property is quite advantages in marine aviation etc.

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