00:01
Water is the working fluid in ideal rankine cycle with reheat.
00:10
Superheated vapor enters the turbine at 10 megapascal and 480 degrees celsius.
00:23
The condenser pressure is 6kcal.
00:31
Steam expands through the first stage turbine to 0 .7 megapascal and then reheated to 480 degrees celsius.
00:45
Then determine for the cycle heat addition heat addition in kilojoule per kg of steam entering first stage of the turbine next, the thermal efficiency, the heat transfer from working fluid passing through the condenser to the cooling water in per kg of steam through the first stage of turbine.
01:26
Here is the t .s curve for the rank and cycle with reheat.
01:30
Calculating the properties of steam at 10 megapascal and 480 degrees celsius, the value of enthalpy at the first state is 3321 .4 kilojoule per kg and entropy at the first state is 6 .5 to 8 .2 kilojoule per kg kelvin.
01:52
Then considering the isentropic expansion of the vapor in the first stage, s2s is equals to s1, which is 6 .5282 then finding the properties of steam at state state s 2 where pressure p2 equals 0 .7 megapascal and for which s 2 s 2 s is equal to 6 .5282 from the table we have enthalpy at 2s status 2684 .4 kilojoule per kg calculating the enthalpy of steam at the exit calculate the enthalpy of the steam at exit of first stage stage is equals to h1 minus h2 upon h1 minus h2s here is the turbine efficiency substituting the values 0 .8 equals 3321 .1 minus h2 divided by 3321 .4 minus 2684 .4.
03:14
From here we get the enthalpy at second state equal 281 .1 .8 kilojoule per kg.
03:22
Now calculating the properties of steam at the third state h3 equals 3438 .8 kilojoule per kg and s3 equals 7 .3 .7.
03:37
Point 874 kilojoule per kg kelvin considering the isentropic expansion of vapor in the second stage of turbine where s4 s3 is 7 .874 kilojoule per kg kelvin finding the properties of steam at pressure p4 equals 6 kiosk and s4 s4 s 4 s 4 value from the table we get h4s equal 2426 kilojoule per kg...