Calculating Time to Heat 52 Gallons of Water

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To calculate the time to heat 52 gallons of water from 60°F to 120°F using a 4800-watt heater, the discussion emphasizes the importance of unit conversion, particularly between gallons and pounds. The participants confirm that the water volume is indeed 52 gallons, and one user suggests recalculating using SI units for accuracy. The calculations involve determining the total energy required in BTUs and dividing by the power of the heater in watts. The conversation also touches on the need for confirmation of the final answer, indicating that the calculations may have been verified. Overall, the focus is on ensuring correct unit usage and calculation methods for accurate results.
Jason03
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the problem I am working on asks to find how long it would take to heat 52 gallons of water in a hot water heater if 4800 watts is being used and the temperature needs to be raised from 60 F to 120 F...

My work is below...

http://i674.photobucket.com/albums/vv106/jason03_2009/hw1.jpg
 
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Jason03 said:
the problem I am working on asks to find how long it would take to heat 52 pounds of water in a hot water heater if 4800 watts is being used and the temperature needs to be raised from 60 F to 120 F...

My work is below...

http://i674.photobucket.com/albums/vv106/jason03_2009/hw1.jpg

I'm not used to working in those units, but your approach looks sound. Did you get the correct answer? If not, try converting into mks units, and re-calculating to see what answer you get.
 
Yea I am used to SI units as well...I just worked with the units given since the conversions were given...I guess I could try it the other way to if I did it correctly
 
Jason03 said:
the problem I am working on asks to find how long it would take to heat 52 pounds of water in a hot water heater if 4800 watts is being used and the temperature needs to be raised from 60 F to 120 F...

My work is below...

http://i674.photobucket.com/albums/vv106/jason03_2009/hw1.jpg

Is the water 52 pounds or 52 gallons?
 
good call...its 52 gallons.. but I did the correct conversion in my calculations...
 
Thanks!...Just checking to see if it was right...
 

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