Help with basic thermodynamics equation (feel like I'm missing something)

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SUMMARY

The discussion focuses on calculating the time required to heat water using the specific heat capacity equation Q = mcΔT. The user specifies a continuous power source of 720 watts, an initial temperature of -40°C, and a final temperature of 70°C, with a water mass of 2 lbs, which must be converted to kilograms for accurate calculations. The absence of heat loss is assumed, simplifying the equation. The key takeaway is the necessity of converting mass to kilograms to apply the equation correctly.

PREREQUISITES
  • Understanding of the specific heat capacity equation Q = mcΔT
  • Knowledge of unit conversions, specifically pounds to kilograms
  • Basic principles of thermodynamics
  • Familiarity with power calculations in watts
NEXT STEPS
  • Learn how to convert pounds to kilograms accurately
  • Research the specific heat capacity of water
  • Explore the implications of heat loss in thermodynamic calculations
  • Study the relationship between power, energy, and time in heating processes
USEFUL FOR

Students in physics or engineering, hobbyists working on heating systems, and anyone interested in thermodynamic calculations related to heating water.

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I want to heat a small reservoir filled with water. I want to find out how long it will take to heat the water from a specific temperature to a specific temperature.

random example.
The continuous power source is 720 watts
The Initial temp is -40c
The Final temp is 70c
No heat loss.
Water amount: 2lbs (I must convert to kg?)

Am I missing anything like conversion? What equation am I working with?
 
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Guessing you want the specific heat capacity eqn Q=mc delta t

You do need to convert to Kg
 

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