Question: Q 3 ( 1 5 Marks ) An open gas turbine power plant is operated between minimum and maximum cycle temperatures are 2 5 C

3 (15

Marks

)

An open gas turbine power plant is operated between minimum and maximum cycle temperatures are

25 C

and

1250 C .

The compression ratio of each compressor is

3 .

Assume the ambient pressure is

1

bar. Compression is carried out in two stages with perfect intercooling

(T 3 = T 1) .

The gases coming out from HP

,

turbine are heated to

1250 C T_{8}

before entering L

.

.

turbine. The expansions in both turbines are arranged in such a way that each stage develops same power. Assuming compressors and turbines isentropic efficiencies as

83 %,

(1)

determine the cycle efficiency assuming ideal regenerator

Q 3 ( 1 5 Marks ) An open gas turbine power plant

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