Its given that The feed water temperature is 45° C and steam is produced at 100° C.
So, T = 100 - 45= 55° C
Now, m = 4kg and Cp = 4.18
Therefore we know,
Heat required = mCpT + mλ
So, Heat required= (4 x 4.18 x 55 ) + ( 22 x 7 )
So, Heat required = 1073.6 kJ
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