|
A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |09
KILOWATT-HOUR
Unit of energy used to perform work (energy and work are equivalent in units, energy being the potential value and work the achieved value) Fuel equivalents: One barrel of crude contains roughly 1700 kWh One ton of coal contains roughly 7500 kWh One gallon of gasoline contains roughly 37 kWh One cubic foot of natural gas contains 0.3 kWh One ton of uranium ore contains 164 million kWh 1.34 horsepower-hours. Thermal unit: One kWh = 3400 BTU. Can be compared to 860 calories (food value) Example: The "average" American home uses about 24 kWh of electricity per day. Heating 3 gallons of water from 75 degrees to the boiling point requires 1 kWh. A 200 watt Photovoltaic array of six, 50 watt Solar modules, will generate 1 kWh in an "average" day (annualized average equivalent of 5 hours peak sunlight per day).
|
| Deutsch | Contact | Newsletter | Sitemap | Search | Text version | Glossary
