ENTC-370 PROF. ALVARADO 1

LAB 8:Steam Turbine

(Rankine Cycle Experiment)

ENTC - 370

Rankine Cycle

ENTC-370 PROF. ALVARADO 2

Process 1-2: Isentropic compressionProcess 2-3: Isobaric heat additionProcess 3-4: Isentropic expansionProcess 4-1: Isobaric heat rejectionIsentropic Process: Adiabatic and reversible process

Experiment Set-up

ENTC-370 PROF. ALVARADO 3

From Lab Manual

ENTC-370 PROF. ALVARADO 4

Tboiler =______°FPboiler =______ psiTturbine inlet =______°FTturbine outlet =______°F Record the current and voltage being supplied to the heater by using a fluke meter. Iin =______AmpsVin =______VoltsRecord the current and voltage produced by the generator:Iout =______AmpsVout =______Volts

Data analysis

ENTC-370 PROF. ALVARADO 5

out generator out outW W V I Power produced by generator:

Power consumed by the whole system:

in in inW V I

outoverall

in

η (%) 100W

W

Overall efficiency

Data analysis

ENTC-370 PROF. ALVARADO 6

_ , _,,

, _ , _

100turbine inlet turbine outlet actualt aturbine s

t s turbine inlet turbine outlet ideal

h hw

w h h

Isentropic efficiency of steam turbine:

Data analysis

ENTC-370 PROF. ALVARADO 7

Estimation of the steam mass flow rate (assume ηgenerator=65%):

_

_ _ _ _

_ _ _

( )

( )

generatorgenerator

turbine actual

turbine actual steam turbine inlet turbine outlet actual

generatorsteam

generator turbine inlet turbine outlet actual

W

W

W m h h

Wm

h h

Plot the entire Rankine Cycle on a T-s diagram using the pressure and temperature data recorded.