Why regeneration is used in Rankine Cycle?
Regeneration improves the cycle efficiency by increasing the initial feed water temperature before the water, water enters the boiler and also helps in controlling the large the large flow rate of steam at the turbine exhaust.
What are the advantages of regenerative cycle over Rankine Cycle?
Advantages of Regeneration cycle: Heat supplied to boiler becomes reduced. Thermal efficiency is increased since the average temperature of heat addition to the cycle is increased. Due to bleeding in the turbine, erosion of turbine due to moisture is reduced.
Why reheat is added to a simple Rankine Cycle?
Reheating is a method of improving Rankine cycle efficiency which consists of inter-stage heating of the expanding steam. After the first stage of expansion which typically reduces initial steam pressure by one-fourth, the steam is heated up (or close) to the maximum heat source temperature.
What is the relation between efficiencies of the ideal regenerative Rankine cycle and the Carnot cycle?
The efficiency of an ideal regenerative cycle is ____ the Carnot cycle efficiency. Explanation: For both the cycles, efficiency is given by 1 – (T2/T1). Explanation: These indiate that the ideal regenerative cycle is better than the Rankine cycle but it is not practicable.
What is the effect of superheated steam on efficiency of Rankine Cycle?
Explanation: The effect of superheated steam on efficiency of Rankine cycle is that the efficiency of Rankine cycle increases with increase in superheat of the steam.
What is the highest moisture content allowed in steam turbines?
about 10%
What is the effect of superheated steam?
Superheated steam “can therefore cool (lose internal energy) by some amount, resulting in a lowering of its temperature without changing state (i.e., condensing) from a gas, to a mixture of saturated vapor and liquid.” – Wikipedia.