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Staying cool without refrigerants: Next-generation Peltier cooling

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Re: Staying cool without refrigerants: Next-generation Peltier cooling

#281

Post by simonebrunozzi »

CivBase wrote: post #243
zevv wrote: post #229

Earlier quoted context omitted.

Could you summarize the contents of this video so we don't have to watch it?

I haven't watched it recently, but here are the main takeaways I remember: Peltier coolers are neat because they're very small and quiet - as opposed to vapor compression systems solutions. However, they are an order of magnitude less energy efficient. Also Peltier coolers still have to obey the laws of thermodynamics, which means that to cool one side of the mechanism, you must heat the other side. In order to do an…

AFAIK, no one has tried to build a Peltier cell paired with a heat pump. I am not an expert, but I would imagine that it's a path that could bring higher efficiencies. Thoughts?

Re: Staying cool without refrigerants: Next-generation Peltier cooling

#282

Post by throwawayoldie »

zettabomb wrote: post #231
SchemaLoad wrote: post #144

This article uses the term AI 5 times to talk about basic microcontroller sensor readings.

So I'm not defending the use of the term AI in this context, however in this case it's part of the product name (for the most part, there's only a few other references). Does the product use anything that would be regarded as properly AI? No idea, but marketing definitely is going to want you to use the Full Product Name(TM) whenever possible.

> marketing definitely is going to want you to use the Full Product Name(TM) whenever possible

Counterpoint: fuck marketing.

Re: Staying cool without refrigerants: Next-generation Peltier cooling

#284

Post by ethbr1 »

FirmwareBurner wrote: post #242
amelius wrote: post #232

Earlier quoted context omitted.

Huh, control theorists always try to rigorously prove the stability and performance of their algorithms. AI seems to be the opposite of that: just let the black box solve it and don't worry about any problems, we'll just add more training data if they happen!

Yes! Let's spend 100x the resources on AI to do what a PID controller or Kalman filter can do.

I’m less scared about 100x the resources (in most applications) in exchange for decreasing programmer time / need.

What worries me far more is the lack of formalism around risk / boundary cases by undertrained teams using modern AI solutions.

Anyone building on top of a thing should either understand (a) how it’s built in detail or (b) its specifications and behavior in detail.

Most of these teams understand neither about LLMs.

Re: Staying cool without refrigerants: Next-generation Peltier cooling

#285

Post by SecretDreams »

TechDebtDevin wrote: post #266
oneshtein wrote: post #252

Earlier quoted context omitted.

It looks like joke today, but it's not a joke anymore. Book can look at your search history youtube history, or reading history to have insight about your points of interest to create list of topics you like, then generate pages on the fly using LLM.

I imagine theres going to be an entire new class of intelligent humans powered by LLMs that learn this way, and they are going to be at such a disadvantage to the people that do it the old fashioned way and dont take shortcuts. The vast majority of humans are going to offload all their critical think skills to LLMs. I dont want to be friends with those people. I want to start a blog about these people called "Artific…

> I dont want to be friends with those people.

That really limits the friendship selection pool :(.

Re: Staying cool without refrigerants: Next-generation Peltier cooling

#286

Post by ethbr1 »

HighGoldstein wrote: post #268
lillecarl wrote: post #256

Earlier quoted context omitted.

Hating on Kubernetes in 2025 doesn't really dong the gong like it used to, if you want to control your workloads through a well integrated API and not be bound to a cloud vendor there aren't many realistic options. Kubernetes is only hard because people make it hard and never bothered to understand the basics of their workload scheduler. Kubernetes is NOT AI hype, it solves real problems for real people everywhere. "…

I think a lot of the Kubernetes hate comes from non-technical people deciding to use it in cases where it either doesn't actually solve any problem, or the overhead is much greater than the benefit. There's a reason it originated from Google, and as much as it pains MBA factory graduates, the project or organizaton they manage is nowhere near Google scale.

> and as much as it pains [your average software developer], the project or organizaton they manage is nowhere near Google scale.

Fixed.

Re: Staying cool without refrigerants: Next-generation Peltier cooling

#287

Post by everforward »

simonebrunozzi wrote: post #281
CivBase wrote: post #243

Earlier quoted context omitted.

I haven't watched it recently, but here are the main takeaways I remember: Peltier coolers are neat because they're very small and quiet - as opposed to vapor compression systems solutions. However, they are an order of magnitude less energy efficient. Also Peltier coolers still have to obey the laws of thermodynamics, which means that to cool one side of the mechanism, you must heat the other side. In order to do an…

AFAIK, no one has tried to build a Peltier cell paired with a heat pump. I am not an expert, but I would imagine that it's a path that could bring higher efficiencies. Thoughts?

Also not an expert, but I’m struggling to find a combination where one of those couldn’t be replaced with a passive thermoconductive element. It’s hard to beat the efficiency of “free”.

Re: Staying cool without refrigerants: Next-generation Peltier cooling

#288

Post by thoroughburro »

simonebrunozzi wrote: post #281
CivBase wrote: post #243

Earlier quoted context omitted.

I haven't watched it recently, but here are the main takeaways I remember: Peltier coolers are neat because they're very small and quiet - as opposed to vapor compression systems solutions. However, they are an order of magnitude less energy efficient. Also Peltier coolers still have to obey the laws of thermodynamics, which means that to cool one side of the mechanism, you must heat the other side. In order to do an…

AFAIK, no one has tried to build a Peltier cell paired with a heat pump. I am not an expert, but I would imagine that it's a path that could bring higher efficiencies. Thoughts?

The heat pump is already so efficient that, I assume, adding something less efficient just makes it worse.

Re: Staying cool without refrigerants: Next-generation Peltier cooling

#289

Post by ethbr1 »

jameshart wrote: post #264
cactusfrog wrote: post #155

Earlier quoted context omitted.

My process control theory textbook has a chapter on neural networks and a lot of the language in control theory has an AI like tinge to it. I think this AI language is native to control theory so it might not be as overblown as it first sounds.

If you type ‘fuzzy logic’ in to google the autocomplete suggested search is ‘fuzzy logic rice cooker’. Control theory has been stealing ML terminology for a long time.

:D Rice cooker marketing is weirdly synchronized on that.

Speaking of, what does it actually mean? That the cooker isn’t using a timer?

Do most of them run off weight + time + heat response logic?

Re: Staying cool without refrigerants: Next-generation Peltier cooling

#290

Post by frozenwind »

Seb-C wrote: post #247
SchemaLoad wrote: post #144

This article uses the term AI 5 times to talk about basic microcontroller sensor readings.

I purchased a book the other day, and when I turn the pages, it automatically shows me the text that I want to read. It must be powered by AI.

I like this reply so much.
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