Steam Power Plant
Prime mover in power plant
The prime mover converts steam energy into mechanical energy. There are two type of steam prime mover viz., steam engines and steam turbines. A steam turbine has several advantages over a steam engine as a prime mover viz., high efficiency, simple construction, higher speed, less floor area requirement and low maintenance cost. Therefore, all modern steam power stations employ steam turbines as prime mover.Steam turbines are generally classified into two type according to the action of steam moving blades viz., (i)Impulse turbines (ii) reaction turbines In an impulse turbine, the steam expands completely in the stationary nozzles (or fixed blades), the pressure over the moving blades remaining constant. In doing so , the steam attains a high velocity and impinges against the read more
If you enjoyed this post, make sure you subscribe to my RSS feed! Read more »
Condensers used in power plant
A condenser is a device which condenses the steam at the exhaust of turbine. It serves two important functions.Firstly, it creates a very low ( By liquidation steam at the exhaust of turbine, a region of emptiness is created. This results in a very low pressure at the exhaust of turbine.) pressure at the exhaust of turbine, thus permitting expansion of the steam in the prime mover to very low pressure. This helps converting heat energy of steam into mechanical energy in the prime mover. Secondly, the condensed steam can be used as feed water to the boiler. There are two types of condensers, namely: (i) Jet condenser (ii) Surface condenser In a jet condenser, cooling water and exhausted steam are together. Therefore , the temperature of cooling water and condensate is the same read more
If you enjoyed this post, make sure you subscribe to my RSS feed! Read more »
