Steam at 30 mpa and 620c enters a rankine turbine and...

Steam at 30 MPa and 620°C enters a Rankine turbine and expands to a pressure of 100 kPa. Determine: a.) The turbine work, in kJ/kg. b.) The heat added at the steam generator, in kJ/kg. c.) The exit quality of steam at the turbine outlet, in percent. d.) The heat rejected at the condenser, in kJ/kg. e.) The cycle thermal efficiency.

Transcript

00:01 Hello in this question we have to find the turbine work the heat added to stream generator here.

00:04 So as the for the solution here as if this one is here, p1 is equals to here 30 mpa.

00:13 P1 is equals to 30 mpa here t1 is equals to here 620 degree centigrade h1 is equals to 3 ,509 .2765 kilojou per kg here and v1 is equals to here 3 .6 .30894 kilojoules per kg here and v1 is equals to here 3 .6 .308094 kilo.

00:30 Kilo j.

00:30 Per kg here.

00:32 So as here p2 is equal to p2 equals to 100 kpa, h of f2 is equal to 417 .56 kilojoule per kg here and h of f2, h of fg2 is equals to here 2 ,258 kilojoule per kg here and h of g2 is equals to here 267, 2675 .5 .5 kilo jule per k g here and v of f2 is equal to here v of f2 equals to 1 .043 2 into 10 s to the power minus 3 m cube per k and s of f2 is equal to 1 .3026 kilojoule per k g here and s of g 2 is equal to here 7 .3594 kilojoule per k g kelvin here so as we know that s 1 is equal to s 2 is equals to here is equals to here s1 equals to s2 is equals to s of f2 plus s of g2 minus of s of f2 here so this one will be equals to here 1 .3026 plus x into plus x into here x also x into 7 .3594 minus of 1 .3026 here so this one will be an s1 equals to s2 equals to 6 .308 .94 here so this one is implying x is equal to 0 .8264255 here and for the second third stall here as p is equals to 100 kp here so h3 is equal to h into f of 3 hf 3 this one is 417 .46 kilojoule per kg here so as here upon w p is equals to v of f into p1 minus of p2 so w of p is equal to 1 131 .19168 kilojoule per kg here and for the step 4 here for the fourth one here this one is for the third one here for the fourth one here h of 1 is equals to h of s plus of wp this one is implying h4 is equal to 448 .65163 kilojoule per kg here so for the first one as here turbine work work wt is equal to h1 minus of s true this one is nearly equals to 6 ,509 .2765 minus of 2 ,283 .289 here...

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