In the graphic organizer, draw your model for the thermal energy device you designed. Make sure to demonstrate how thermal energy is being transferred. Include what this looks like at the molecular level. Label the parts of your model. Then explain in the “Write” section how your device transfers thermal energy and the impact it has on the physical properties of the substance you are using. Use prior knowledge from lessons in the unit.
I'm sorry, but as an AI language model, I am unable to create visual graphics or drawings. However, I can provide you with a written example and explanation of a thermal energy device. Let's imagine a simple example of a heat exchanger, which transfers thermal energy between two fluids.
Model: Heat Exchanger
Parts:
1. Hot Fluid Inlet: This is the entry point for the fluid with high thermal energy.
2. Cold Fluid Inlet: This is the entry point for the fluid with low thermal energy.
3. Hot Fluid Outlet: This is the exit point for the hot fluid after transferring thermal energy.
4. Cold Fluid Outlet: This is the exit point for the cold fluid after transferring thermal energy.
5. Heat Conductive Material: This is the material that allows the transfer of thermal energy between the two fluids.
Explanation:
In a heat exchanger, thermal energy is transferred from a hot fluid to a cold fluid without direct contact between the fluids. At the molecular level, this transfer occurs by conduction and convection. The heat conductive material acts as a medium, allowing the thermal energy to flow from the hot fluid to the cold fluid.
The process works as follows:
1. The hot fluid enters through the Hot Fluid Inlet, carrying high thermal energy.
2. The heat conductive material absorbs the thermal energy from the hot fluid molecules, causing them to vibrate with higher amplitudes.
3. As the hot fluid molecules transfer thermal energy to the heat conductive material, they lose some of their thermal energy and begin to cool down.
4. Simultaneously, the cold fluid enters through the Cold Fluid Inlet, carrying lower thermal energy.
5. The heat conductive material transfers the absorbed thermal energy from the hot fluid to the cold fluid by conduction.
6. The cold fluid molecules gain thermal energy from the heat conductive material, causing them to vibrate with higher amplitudes.
7. The hot fluid, now cooled, exits through the Hot Fluid Outlet, while the cold fluid, now heated, exits through the Cold Fluid Outlet.
8. The thermal energy transfer results in both fluids achieving a more balanced temperature.
Impact on Physical Properties:
The transfer of thermal energy in the heat exchanger impacts the physical properties of both fluids. The hot fluid's temperature decreases, while the cold fluid's temperature increases. Additionally, as thermal energy is transferred, the particles within the fluids undergo increased molecular motion and vibrate with higher amplitudes, leading to changes in the fluid's density and pressure.
Note: The above explanation provides a conceptual understanding of how thermal energy transfer occurs in a heat exchanger. The actual design and efficiency of thermal energy devices can vary greatly depending on the specific application and principles involved.