horsepower-hour

Among the concepts I have introduced here are kinetic and potential energy; field, limit, and gradient; and such measures as the Calorie, the kilowatt and the kilowatt-hour, the horsepower and horsepower-hour.

Energy and Society~ Chapter 1~ Energy & Society 2009

One kilowatt hour is equivalent to 1.34 horsepower-hours and to 860 Calories; one horsepower-hour equals about 641.56 Calories.

Energy and Society~ Chapter 1~ Energy & Society 2009

At 20 percent efficiency he expends about 1 horsepower-hour of mechanical energy to get the coal.

Energy and Society~ Chapter 5~ Steam~ Key to the Industrial Revolution 2009

They carried a crew of about 40 men, so since each man consumed in the form of food the equivalent of about 1 horsepower-hour per day, the surplus developed at a maximum was about 47 horsepower-hours per day per crew member when the ship operated round the clock.

Energy and Society~ Chapter 3~ Inorganic Energy Sources~ Wind and Water 2009

This amounts to 1,980,000 foot-pounds per horsepower-hour.

Energy and Society~ Chapter 3~ Inorganic Energy Sources~ Wind and Water 2009

H2 hydrogen he height of earth column hp horsepower hph horsepower-hour

10. Appendix 1989

As a matter of fact, there is less heat to be had in thermal units from a horsepower-hour of electricity than from three ounces of coal.

Electricity for the farm Light, heat and power by inexpensive methods from the water wheel or farm engine Frederick Irving Anderson 1912

If we rate a team of oxen a 1½ horsepower and assume that of the 50 days spent in plow-culture farming, there are 30 days in which the team is used 10 hours a day, we get a total of 450 horsepower-hours for the oxen and 50 (figuring the man at 1/10 horsepower, or 1 horsepower-hour per day) for the men used, or a grand total of 500 horsepower-hours to produce a hectare of corn with the plow as compared with 165 horse-power hours for hoe culture.

Energy and Society~ Chapter 7~ The Industrialization of Agriculture 2009

1 B.T. U. (British T.ermal Unit) = 1,052 watt-seconds = 778 foot-pounds = 0.252 calorie = 0.000292 kilowatt-hours = 0.000391 horsepower-hour

Practical Mechanics for Boys J. S. Zerbe