Random versus ordered combustion temperature

In summary, as the pressure in the combustion chamber decreases and the molecules leave through the nozzle in a more ordered state, their temperature will be greater compared to their temperature in the chamber before being exhausted. This is due to the relationship between pressure and temperature, where as pressure decreases, temperature increases.
  • #1
dymand68
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1. Homework Statement :
Molecules in the combustion chamber of a rocket engine are in a high state of random motion. When the molecules leave through a nozzle in a more ordered state, will their temperature be more, less, or the same as their temperature in the chamber before being exhausted?

Homework Equations

temperature (energy) rises(or falls) as pressure increases (or decreases)

The Attempt at a Solution


temperature is more leaving through the nozzle, in a more ordered state (?)
 
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  • #2
The temperature of the molecules will be greater when they leave through the nozzle. This is because as the pressure in the combustion chamber decreases, the temperature of the molecules increases. This increase in pressure is due to the more ordered state of the molecules as they leave through the nozzle.
 

1. What is the difference between random and ordered combustion temperature?

Random combustion temperature refers to the temperature at which a fuel spontaneously ignites and burns in a chaotic and unpredictable manner. Ordered combustion temperature, on the other hand, refers to the controlled and predictable combustion process in an engine or furnace.

2. How does the combustion temperature affect engine performance?

The combustion temperature directly affects the amount of power an engine can produce. Too low of a temperature can result in incomplete combustion and reduced efficiency, while too high of a temperature can lead to engine damage.

3. What factors influence the combustion temperature?

The combustion temperature is influenced by several factors, including the type of fuel being used, the air-to-fuel ratio, the compression ratio, and the engine design. Other external factors such as altitude and ambient temperature can also play a role.

4. Can the combustion temperature be controlled?

Yes, the combustion temperature can be controlled through various means such as adjusting the air-to-fuel ratio, using different types of fuel, and implementing cooling systems. This allows for optimized engine performance and reduced emissions.

5. How is the combustion temperature measured?

The combustion temperature can be measured using a variety of methods, including thermocouples, infrared sensors, and exhaust gas analyzers. These devices can provide real-time data on the temperature inside the combustion chamber.

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