Engineering thermodynamics problem?

Posted on 2014-12-16 06:11:00 in Engineering by PANOS

We have one power generating unit that works according to ideal Rankine cycle. The vapor of water enters the steam turbine with 3 Mpa pressure at 350 *C and condensates in the steam condenser under 10 kPa pressure.

We must find:

a) the unit's thermal efficiency

b) the efficiency number if the vapor of water gets superheated at 600 *C instead of 350*C

c) the efficiency number if the boiler's pressure is increased to 15 Mpa whilst keeping entrance temperature at 600 *C.

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