Multiple choice

A thermal power plant operates on a regenerative cycle with a single open feed water heater, as shown in the figure. For the state point shown, the specific enthalpies are : h1 = 2800 Kj/kg and h2 = 200 Kj/kg. The bleed to the feed water heater is 20% of the boiler steam generation rate. The specific enthalpy at state 3 is

  1. 720 KJ/kg

  2. 2280 KJ/kg

  3. 1500 KJ/kg

  4. 3000 KJ/kg
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

$=0.2\times2800+0.8\times200=720kJ/kg$

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