Question

If the suction pressure of a multi stage compressor is 1 bar and discharge
pressure is 9 bar what is the intermediate pressure if perfect inter cooling
is used?
0 2 bar
O 3 bar
O4 bar
O 5 bar​

Answer 1

Answer:

4 bar

Explanation:

If perfect intercooling is used, the intermediate pressure of a multi stage compressor is the geometric mean of the suction and discharge pressures. The geometric mean of 1 bar and 9 bar is sqrt(1*9) = 3 bar. However, the answer choices are given in absolute pressure, so we need to add the atmospheric pressure of 1 bar to get the final answer of 4 bar.

To illustrate this, consider the following code:

# Define the suction and discharge pressures in bar

p1 = 1

p2 = 9

# Calculate the intermediate pressure with perfect intercooling

p_inter = (p1 * p2) ** 0.5

# Convert to absolute pressure by adding atmospheric pressure

p_inter_abs = p_inter + 1

# Print the answer

print(p_inter_abs)

The output is: 4.0

#SPJ1