POWER FROM A SEWER.

POWER FROM A SEWER.

It is a probability that the Chicago drainage canal may be utilised for power purposes instead of letting 27,000 horsepower go to waste as at present. The power generated by this means could then be employed for the waterworks plant and for lighting the streets by electricity. This would be no new application of a canal’s possibilities. At Puebla, Mexico, where a private corporationdug a six-mile canal connecting two rivers, the power developed is being transmitted eighteen miles with a loss of only seven per cent. There there is a fall of nearly 500 feet: but the volume of water is comparatively small. Chicago could do better than Puebla, because, while it has not the fall, it more than makes up for this in the immense volume of water that goes through the drainage channel hourly. The city could save $250,000 a year on the proposition. There could be developed 22,000 horsepower from one plant at Lockport, while from a second plant this amount could be increased to more than 27,000 horsepower. The loss in transmission twenty-nine miles, would not exceed ten per cent. To put up a plant at Lockport and provide for transmission of the power would cost $3,000,000.

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