How much electric power can Iget from 40 gallons per minute at 12 pounds per square inch flowing out a inch and quarter diameter pipe 24 hours 7 days a week?

Answer 1

You could do estimates using a formula used to calculate the horse power for a pump pumping clear water. The formula is (GPM * HEAD) / (3960 * EFFICIENCY). To convert pressure to head multiply pressure by 2.31. The 3960 value is a constant used to convert pounds of water to minute to 1-horsepower or 33,000 pounds per minute. An example is:

(40 gallons per minute * 12 psi * 2.31) / (3960 * .3) = 0.933 horsepower using 30% efficiency.

0.933 horsepower * 0.746 = 0.696 kilowatts per hour

At $0.05 per kilowatt-hour the value would be $0.0348 per hour.

This would be my rough estimate but as you can see a change in efficiency or amount per kilowatt hour changes the answer considerably.

Hope this give you some ideas.

DNC