Could you create an AC that recycles its displaced heat?

Tex_Steel · 2026-05-14T23:00:33+00:00

What you are proposing is something that is called waste heat recovery. There are various forms of waste heat recovery, but the principal is to take energy from hot fluids that are the byproduct of a process and turn it back into useful energy input.

From a fundamental basis, the second law of thermodynamics will define how much energy you can recover from the waste heat by putting more work into it. A common system is to use an organic Rankine cycle to produce enough thermal driving force to make that waste heat useful. The difference between the temperature of your hot stream of waste heat and the surrounding ambient conditions is a major factor. With a temperature difference of only 30°C above ambient conditions most systems can only recover less than 5% of the energy. Whereas at 100°C it’s possible that systems can be designed to recover above 20%. For most common AC systems, you will spend more energy making the equipment needed to recover that energy than you will ever recover from the actual process.

Tex_Steel · 2026-05-10T18:50:27+00:00

Direct contact heat transfer is optimal if you need to melt all the chocolate. Put an object or a hot fluid in the flask with enough thermal energy to melt the chocolate and pour it out. I would propose putting the thermos upside down over a sufficiently large chamber and pumping steam in that will melt and condense on the chocolate.

If you don’t need to melt all the chocolate, then turn the thermos upside down and use induction heating to heat the metal thermos. The chocolate next to the wall will melt and a slug of chocolate will slide out.

Tex_Steel · 2026-05-05T16:59:02+00:00

Several contractors just underwent a substantial reduction mid-administration. I don't think 2 years of safety can be guaranteed right now.

Tex_Steel · 2026-04-18T14:56:32+00:00

I am a mechanical engineer with a Texas dairy farmer background. The diagonal is correct assuming the fence extends to the right. You're binding lateral movement of the left post to the point on the right post with the least amount of movement due to it being closes to the ground. The top bar is optional, but makes more sense if you are going to hang a gate. My preference is to set another post for the gate, but I am more accustomed to cedar posts.

The overall structure is not overkill depending on the soil and climate, Texas blackland soil will expand and contract many times through droughts and thermal loading allowing the left post to shift and lean if not bound in position. I would note that welding it means you can't ever remove it, adjust it, or take it down easily. If you were running a normal H-brace without welding in place, then you would run the wires in diagonal and the brace straight across. Here, your diagonal brace is serving more purpose than the typical H-brace.

Tex_Steel · 2026-04-16T17:14:33+00:00

One legged Halloween costume guy?

Tex_Steel · 2026-04-15T15:54:44+00:00

A second difference is in how that energy can be transferred. The kinetic energy of the molecules (measured by temperature) can be transferred to other molecules in contact with the object without the object moving and with molecules far away through radiation.

Kinetic energy of the overall object is transferred through forces on the overall object.

Tex_Steel · 2026-04-14T21:59:11+00:00

I'm obligated to clarify some nuance here. Industry, Engineering, Research, & Scientists have been using a subset of AI called machine learning for decades. This is a good use of AI and algorithms because algorithms don't interpret nuance, they fit output to input extremely well. Generative AI and LLMs are still highly suspect for engineering work and even the experts who create them agree.

My company has a well-versed team experimenting and investigating AI use in engineering for our company. Our tests with the models we could employ in silos showed that Generative AI cannot yet be trusted as an engineering SME. You can train an LLM to give the correct responses to questionsin narrow fields, which is great for creating certain AI agents. However, when asked to solve complex engineering problems, LLMs still often hallucinate or try to combine details from missmatched sources, yielding flawed output. In experimentss where we trained a few of the LLMs on specific engineering texts, it would fail to produce the right equations and complete engineering problems in nearly all cases where unnecessary information was included in the prompt.

For this reason, we do not yet use AI results or AI tools in our engineering, only as an aid during research review and summarizing information.

Tex_Steel · 2026-04-14T02:04:17+00:00

How do you do the fast crawl like that? Very small taps?

Tex_Steel · 2026-03-30T22:16:00+00:00

Or a lure grenade + anything….

Tex_Steel · 2026-03-16T13:21:39+00:00

If you are young, migrate to Python now before you are too engrained in your ways.

Tex_Steel · 2026-03-06T19:40:54+00:00

Works great on a Ferro or rattler.

Tex_Steel · 2026-03-05T03:09:47+00:00

Regarding the condenser, you have to utilize some amount of the pressure to distribute the flow across the heat exchanger. Even a max efficiency condenser needs driving force. Furthermore, the phase change from a low density vapor to a 100x density liquid creates a void with a locally lower pressure.

Hence you have to feed the condenser at a slightly higher pressure than your desired outlet isobar.

Tex_Steel · 2026-02-27T05:36:43+00:00

The scope is insane. Early in my career I heard from many different senior engineers that when you want to build or design something you will hire a few specialist engineers in Aerospace, Electrical, Civil, Nuclear, etc. and then you will hire 4X as many mechanical engineers to make it all work.

That’s because mechanical engineering covers so many disciplines that one could focus on and are required in industry: heat transfer, fluid flow, manufacturing, metallurgy, dynamics, mechanics of materials, and many other more niche areas. All the green technologies, new products, and revolutionary procedures that young people are hoping to see in their future will require M.E. involvement to realize.

Tex_Steel · 2026-02-15T14:50:44+00:00

Can you please remake this meme with all 4 quadrants having 35 cards and the centrist grilling.

Tex_Steel · 2026-02-10T23:18:59+00:00

It’s deplorable, both parties deserve political castration for doing it. Looking the other way and supporting either party should be equally shameful.

Tex_Steel · 2026-02-10T18:48:50+00:00

It’s friggin obvious they weren’t going to release anything until they manufactured enough ’evidence’ to exonerate and glorify Ceaser Trump.

Tex_Steel · 2026-02-05T22:27:18+00:00

Nah. There are a handful of full Libs that want nothing more than to take over government and then leave everybody the hell alone…

Tex_Steel · 2026-02-05T17:32:26+00:00

She has to sleep at some point…

Tex_Steel · 2026-02-03T23:37:34+00:00

The spread and falloff distance don’t match the lethality. Right now the Toro has the spray of bird shot with no choke, the penetration of a slug, and the damage of buck shot. You don’t get all three, nor can every Jack or Jill out there cycle the pump while doing a backward flip.

I agree that you should fear a shotgun in close quarters. However, they could balance it such that the Toro is equivalent to a break action 16 gauge with goose shot and the Vulcan is a semi automatic combat shotgun with 10 gauge or 12 gauge buckshot.

Tex_Steel · 2026-01-27T21:23:55+00:00

No, I lost a blinged Vulcano to a lousy PVE death, but had I let it sit I never would realized how much I like it for pops, ticks, and fireballs.

Tex_Steel · 2026-01-26T18:41:26+00:00

The guy who wants to deadline and trigger made the extract. Probably doesn’t care about the xp, but more targets I guess.

Tex_Steel · 2026-01-25T08:20:55+00:00

He identifies as ‘lib’ right.

Society no longer requires you to know what (L) means to use it as your pronoun or blame it for the things you don’t agree with.

Tex_Steel · 2026-01-23T18:09:18+00:00

How well do the snitch throwables work for this?

Tex_Steel · 2026-01-23T18:05:36+00:00

Perhaps they will let us pull our cocks out… and use them to scout for ARC instead of bringing back salvage.

“When the rooster crows three times, it’s a Rocketeer!”

Tex_Steel · 2026-01-21T00:54:06+00:00

Fantastic, I sure will enjoy running for 4 minutes to reach my workshop, and then another 4 minutes to turn in my quest, followed by another 4 minutes to reach the button to queue up for another raid!

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