Enthelpy Change of Ice to Vapor - Show on Graph w/BTU's

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SUMMARY

The discussion focuses on graphing the enthalpy change of 1 lb of ice transitioning to vapor, specifically from -35°F to 50°F, while illustrating the BTUs required for this phase change. Key points include the identification of latent heat and sensible heat within the graph. The user seeks to understand how to represent heat flow against temperature, particularly across specified temperature ranges: -50°C to 0°C, at 0°C, 0°C to 100°C, and above 100°C. The discussion emphasizes the need for clarity in visualizing the relationship between heat flow and temperature change.

PREREQUISITES
  • Understanding of thermodynamics concepts such as latent heat and sensible heat.
  • Familiarity with BTU (British Thermal Unit) calculations.
  • Basic knowledge of graphing techniques and data visualization.
  • Experience with temperature scales, particularly Fahrenheit and Celsius conversions.
NEXT STEPS
  • Research how to plot phase change graphs using temperature and heat flow data.
  • Learn about the specific heat capacities of ice, water, and steam.
  • Explore the concept of enthalpy and its application in phase transitions.
  • Investigate software tools for graphing thermodynamic processes, such as MATLAB or Excel.
USEFUL FOR

Students and professionals in thermodynamics, physics educators, and anyone involved in heat transfer analysis or phase change studies will benefit from this discussion.

pipor
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Hi!,If someone could help me. I need to show on a graph (line) the change of state of 1 lb of ice, to water. From -35 degrees F to 50 degrees F showing the BTU's required to do so. And where the latent heat and sensible heat come into the graph. I hope someone understands what I'm saying and can give me some help. Thanks
 
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If you plot heat flow on the x-axis and temperature on the y axis, can you determine the shape of the graph over the following temperature ranges:

a) -50C to 0C
b) at 0C
c) 0C to 100C
d) 100C +

ie what is the rate of temperature change with heat flow into the ice over each of these temperature ranges?

AM
 

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