After expansion from a gas turbine, the hot exhaust gases are used to heat the c

Question

After expansion from a gas turbine, the hot exhaust gases are used to heat the compressed air from a compressor with the help of a cross flow heat exchanger of 0.8 effectiveness. What is the number of transfer units of the heat exchanger?

Options:

A . 2

B . 4

C . 8

D . 16

Answer: Option B
Answer: (b).4

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