How fast would 18.5L water temperature rise to 144 degrees?

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SUMMARY

The discussion centers on the time required for 18.5 liters of water in a plastic container to reach a temperature of 144 degrees Fahrenheit when placed in an environment at that temperature. Key factors influencing this process include the thermal resistance of the plastic container, its thickness, surface area, and whether the water is stirred or subjected to convection. The application of Newton's Law of Cooling is essential for calculating the time, and the starting temperature of the water significantly impacts the outcome. Experimental determination of thermal resistance is recommended for accurate results.

PREREQUISITES
  • Understanding of Newton's Law of Cooling
  • Knowledge of thermal resistance concepts
  • Familiarity with heat transfer principles
  • Basic skills in experimental design for thermal measurements
NEXT STEPS
  • Research methods for calculating thermal resistance in different materials
  • Learn about heat transfer mechanisms, including conduction, convection, and radiation
  • Explore experimental techniques for measuring temperature changes in liquids
  • Study the effects of stirring and convection on heat transfer rates
USEFUL FOR

This discussion is beneficial for engineers, physicists, and anyone involved in thermal management or heat transfer applications, particularly those working with water heating systems or storage devices.

brycenrg
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If u had a 18.5L water in a plastic container, in a room that was at 144 degrees. How long would it take for 18.5L water to rise to that temperature? I am trying to buy a water storage device, but it can't go over 122 degrees.
 
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If you put something in a room at 144 degrees it will eventually reach 144 degrees, it's just a matter of how long it takes. To work that out you need to know the thermal resistance between the room and the water. That will depend on the thickness of the plastic container, it's surface area and factors such as is the air or water stirred or subject to convection. It might well be easier to determine the thermal resistance experimentally.

You also need to know the starting temperature of the water. It would also make quite a difference if your units are Centigrade!
 

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