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Manmade Global Warming - New Extremes, page-9187

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nippy

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25/07/24

13:10

Post #: 74913360
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Originally posted by pintohoo: ↑

I find it quite odd that people talk of temperature and relate it to any past events -
the problem isn't as much as the temperature ---------- the problem is the rate of rise. They appear to have zero idea of the meaning of the term 'thermal runaway'

we have little idea of what planetary response we will get if we continue on with this stunning rate of rise - we may well have gone beyond a tipping point already ---------- if we did get such a thing as 'thermal runaway' ---

there's something which is highly highly probable --------- it's gonna hurt

Rapid rate of rise in certain measurements can indeed lead to runaway catastrophic conditions, particularly in chemical and thermal processes. This phenomenon is known as thermal runaway, and it can have severe consequences in various fields[2].
Thermal runaway describes a process that is accelerated by increased temperature, which in turn releases more energy, further increasing the temperature[2]. This creates a dangerous positive feedback loop that can quickly spiral out of control, leading to potentially catastrophic results.
Some key aspects of thermal runaway include:
1. **Chemical reactions**: In chemical engineering, thermal runaway is associated with strongly exothermic reactions that are accelerated by temperature increases[2]. As the reaction rate increases, more heat is generated, further accelerating the reaction.
2. **Electrical systems**: In electrical engineering, thermal runaway can occur when increased current flow leads to higher power dissipation and temperature, which in turn can cause even more current to flow[2].
3. **Battery systems**: Thermal runaway in batteries can be triggered by factors such as overcharging, high ambient temperatures, or aging[3]. This can result in rapid temperature increases, potentially leading to fires or explosions.
4. **Industrial processes**: In chemical processing, a runaway reaction can occur due to failure of cooling systems, inappropriate reaction scaling, or accidental introduction of incompatible substances[4]. This can lead to rapid increases in temperature and pressure, potentially resulting in explosions, toxic releases, or fires.
5. **Semiconductor devices**: In semiconductors, thermal runaway can occur when localized heating causes resistance to decrease, allowing more current to flow through overheated regions, leading to further temperature increases[2].
6. **Astrophysics**: Runaway thermonuclear reactions can occur in stars under certain conditions, leading to phenomena such as nova and supernova explosions[2].
To prevent thermal runaway and its catastrophic consequences, it's crucial to implement proper monitoring and control systems. For example:
- In battery systems, measuring and analyzing temperature, voltage, and float current can help detect early stages of thermal runaway[5].
- In chemical processes, consequence modeling software like EFFECTS can be used to simulate potential runaway reactions and quantify their impacts, allowing for better safety measures[4].
By understanding the potential for thermal runaway and implementing appropriate safeguards, industries can significantly reduce the risk of catastrophic events resulting from rapid, uncontrolled increases in temperature or reaction rates.

[1] https://www.sciencedirect.com/science/article/abs/pii/S2211339823000904
[2] https://en.wikipedia.org/wiki/Thermal_runaway
[3] https://www.sciencedirect.com/science/article/abs/pii/S209549562200136X
[4] https://www.gexcon.com/blog/modelling-a-runaway-chemical-reaction-using-effects/
[5] https://www.vertiv.com/48dc48/globa...-prevention-using-per-string-measurements.pdf

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And you are totally ignoring the fact that history shows us temperature trends reverse - repeatedly.

That is why we can be colder now than during the Roman Warming and they could ice skate on the Thames in-between Roman Warming and now.
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