How can I convert watt-hrs per gallon to watts?

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SUMMARY

This discussion focuses on converting watt-hours per gallon to watts, emphasizing the distinction between energy (watt-hours) and power (watts). It establishes that 1 gallon of gasoline contains approximately 33.3 kilowatt-hours of energy, equating to about 120 million BTUs. The conversion process involves understanding the relationship between miles per gallon (mpg), miles per hour (mph), and the resultant gallons per hour, which can then be used to derive power in watts.

PREREQUISITES
  • Understanding of energy units: watt-hours and BTUs
  • Basic knowledge of power units: watts and kilowatts
  • Familiarity with fuel efficiency metrics: miles per gallon (mpg)
  • Concept of flow rate: gallons per hour
NEXT STEPS
  • Research the conversion formulas between energy and power units
  • Learn about the relationship between fuel consumption and power output in vehicles
  • Explore the implications of energy density in fuels like gasoline
  • Investigate the calculation of power from fuel consumption rates
USEFUL FOR

This discussion is beneficial for automotive engineers, energy analysts, and anyone involved in optimizing vehicle performance and fuel efficiency calculations.

tacojohn
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I'm trying to figure out how to convert watt-hrs per gallon to watts. If anyone can help it would be much appreciated!
Thanks. ^_^
 
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watt-hours is a unit of energy. Watts are a unit of power - so one watt for one hour would be a watt-hour
 
1 gallon of gasoline contains about 120 million btu of energy. 1 kilowatt-hour of energy is equivalent to 3.6 million btu. So 1 gallon of gasoline contains about 33.3 kilowatt-hours of energy.
 
Well I'm converting a car's power to watts, knowing the mpg at a specific mph and watts-hr per gallon. So I'm slightly confused because if read that you can not change watt-hr to watts?

Can you shed some light on this for me?
 
mpg and mph gives you gallons/hour = power
If you convert gallons into watt hours then you get power in watts
 

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