In the mine at a depth of 100 m, 45 m of water is collected every minute. Determine the pump power to pump this water.
June 1, 2021 | education
| Given:
h – 100 m.
V – 45 m.
t – 1 m. – 60 s.
To find:
N -?.
Decision:
You can determine the pump power for pumping water using the formula:
N = A / t = mgh / t = pV * gh / t.
The formula was transformed. We know the values of depth, volume, time.
We find the value of the density of water in the table of density of liquids: p = 1000 kg / m3.
g is the acceleration due to gravity. g = 9.8 H / kg.
Substitute the values and find:
N = 1000 * 45 * 9.8 * 100/60 = 735 kW.
Answer: 735 kW.
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