While Removing CO2 takes a lot of time and effort, couldn't we speed the process of removing the heat ?

So obviously this wouldn't be easy, but here is what i thought.

What i understand is that earth naturally cools down by radiating its heat into space as infrared radiation. The CO2 we've "stored" in the atmosphere for the past century or so is acting like a blanket, making the heat from the infrared stay within the atmosphere and reduce the heat transfer.

I also understand that even if we start decreasing CO2 levels, we would be stuck with high temperatures for a while.

So assuming we are on the right path CO2-wise, couldn't a solution be elaborated to artificially increase the heat transfer ? Here is what i thought :

- We could use big white materials (like gravel) to cover big portions of unused land near the equator. Like desert-sized areas. This would not increase heat transfer per se, but it will reduce the amount of energy received by the sun by reflecting more of it. (Greenhouse isn't a total blanket, so allowing more reflection should allow more heat to escape)

- If the CO2 layer is an issue, let's dump the heat above it : With carbon-free energy (obviously) we could pump and concentrate a bunch of heat to shoot it at the altitude where there is the least absorption of radiation. Now this could require Sci-fi levels of infrastructure like a space tower, that may be possible if built at a pole (no centri-force) assuming we have a material capable of supporting its own weight. Or vehicles. A bunch of them that basically carry heat at high altitudes to radiate it into space.

Obviously i didn't just find "The solution to global warming" but i wanted to open a discussion about a possibility of "dealing with heat" after dealing with the CO2

reddit.com
u/Rambo_sledge — 2 days ago

Is High pressure or Low pressure better for cooling ?

I've been wandering on internet looking at alternatives to the thermo-aquatuner and i've seen stuff like : "Self cooling turbines [...] work with any radiant pipes if the atmosphere is more than 500 g Hydrogen. Copper/Gold radiant pipes even manage to cool the turbine in an +1500g Oxygen atmosphere."

But why is there a minimum pressure ? I understand TC and SHC and my guess was that with low pressure, you traded temperature stability (SHC) for better TC, since less mass will fluctue more / cool more quickly, where it should be harder for radiant pipes to cool higher pressures.

My guess is that the turbine will heat too quickly and it NEEDS high pressure to maintain its own temperature, the radiant pipes working alongside it.

But then it leads me to the question : if i want to use wheezeworts or AETN for cooling, should i plunge them in high pressure h2 or low pressure h2 ? (Minimum 1000g/tile for wheezeworts i know)
Low pressure will increase the temperature difference between cooling chamber and stuff to cool, but high pressure will hold it more despite working harder to get a colder temp.

What's your call ?

u/Rambo_sledge — 11 days ago

Make your steam rooms smarter with this simple automation !

I haven't seen a lot of these around here so i'm posting this automation build i made to make your steam turbines more efficient at producing power.

TL;DR and setup at the end.

Why do you need it ?

We all know Steam Turbines cap at 200°C of steam for 850W produced. You can have steam above 200°C and you will still produce 850W while drawing the same amount of steam.

Steam turbines don't actually convert temperature in electricity. They convert heat in electricity, as in DTUs. The turbines draws 2000g/s of steam to produce its max output.
Steam having a specific heat capacity (SHC) of 4.179 DTU/g/°C and the turbine taking away (200-95 =) 105°C of it (because of its 95°C exhaust) means it converts 877,59 kDTU into electricity.
Above 200°C, it still takes in 2000g of that temperature, say 250°C. (250-95 = 155°C) meaning it takes 1 295,49 kDTU (or 1/3 more) and still produce the same wattage.
This heat is wasted.

What can you do about it ?

Tell it to pull less DTUs. It's really that simple.
Steam in this context is fuel. More fuel = same power ? Reduce the fuel input.

Turbines have 5 inlets below them to suck in steam. you can close them sequentially based on steam temperature to produce near the max output with less heat consumed.

How do you do that ?

You use Mechanized airlocks. The simplest design i made uses 2 doors, three sensors, two logic gates and allow you to close 1, 2 or 3 intakes depending on the situation. You don't want to close 4 anyway because of how the game is coded : the turbine will be capped at 1/2 speed with a single open inlet.

What are the numbers ?

From 125°C to 200°C, it stays in normal operation, oscillating between 240~W to 850W.
From 200°C to 226°C, it closes one inlet, and operates between 730W and 850W
From 226°C to 270°C, it closes two inlets and operates between 640W and 850W
From 270°C to 357.5°C, it closes three inlets and operates between 570W to 850W
Above 357°C, it still produces 850W and the rest is wasted like it would be without this setup.

What are the pros ?

Increased efficiency of heat and steam usage, by a LOT.
Reduced cooling need for the turbine since it heats less by consuming less.

What are the cons ?

You will rarely stay at 850W, as it's right above that point where doors close to reduce consumption which reduces the production.
If your goal is to delete heat, since this wastes less power it will delete less amount of heat in short times. It will spread its deletion over longer time, allowing more power production.

I hope you enjoy this setup as much as i do.
Feedback is welcome.

TL;DR : Close Steam turbines inlet when steam is too hot, this is how.

Here is the setup :

https://preview.redd.it/z9c8kbgj6g8h1.png?width=1321&format=png&auto=webp&s=0898d3c4cb2732ded8c2d801cd4bc8d4d7cc07ec

https://preview.redd.it/4fo0ep7w6g8h1.png?width=1152&format=png&auto=webp&s=c49703bef59c2e6317a59cd68e4fbc5b3caa8160

And it works with 2 turbines too !

The XORs are reversed, the sensors do not need to be.

The XORs are reversed, the sensors do not need to be.

reddit.com
u/Rambo_sledge — 16 days ago

Anybody got a good vaccum farm design ? i'm tryna make vertical wind tunnels but they consume a ton !

u/Rambo_sledge — 21 days ago

Is there a way to prevent steam turbine from exchanging heat with steam room ?

Hi, i'm building something and for this to work i need to have the steam chamber of a steam turbine as much isolated as possible, like bare minimum heat loss. And for that all the adjacent insulated tiles are ceramic

I also need the temperature inside the steam room as equalized as possible, that's why i have that many granite tempshift plates. Steel may equalize better but it's expensive...

For this test i'm keeping the steam turbine in a chamber with huge amount of 37°C hydrogen to keep the temperature as stable as possible, and it looks like it's exchanging 37°C with the steam chamber through the intakes. any way to prevent this ?

The steam turbine itself is steel, it is "self cooled" with its own water that goes through insulated pipes and then 3 radiant pipes (self heated at that point). It sits on 50kg/tile of 37°C water

My thoughts :
Remove the top row of tempshift plates (might have a bad equalization)
Keep the turbine at a higher temp (less transfer but still transfer)
Isolating tempshift plates top row ???? (i mean... idk)

What do you think ?

u/Rambo_sledge — 24 days ago

You are part of the final 10%

The vote has begun, most of the people have pushed their buttons. You are one of the 10% remaining, and the stats are given to you :
Exactly 45% of people pushed blue, whilst exactly 45% of people pushed red.
You are isolated from the other 10% which are being given the same information, and have to make the same choice.

What button do you push ?

reddit.com
u/Rambo_sledge — 26 days ago

Cold SPOMs are game changer

It's the second playthrough where i make cold a SPOM simply by circulating tempered intake water inside the SPOM chamber before sending it to the electrolyzers.

This allows me to pull cold oxygen (22°C) and hydrogen (30°C) out of it, then use the o2 to keep the base tempered and the hydrogen to keep generators from getting too hot.

It is also power positive thanks to the not-use of gas filters

https://preview.redd.it/bg6eepeh196h1.png?width=858&format=png&auto=webp&s=2000be60fea2e2c7a177d9efc4d032dd635d763e

https://preview.redd.it/pj2y24ol196h1.png?width=863&format=png&auto=webp&s=f6694e9a821d42e59c6169f2abbc9aa42a0a6000

https://preview.redd.it/er42tr9u196h1.png?width=856&format=png&auto=webp&s=b087d911fb7c3077c456a418b78ee42cbd9084f1

https://preview.redd.it/1l6mltne296h1.png?width=847&format=png&auto=webp&s=991eb305c155547cebd8fe190cea35693e492a45

reddit.com
u/Rambo_sledge — 27 days ago
▲ 2 r/Xcode

2026 Specs recommendations to run Xcode

Hello, so i know it's a recurring thread and probably boring for you, but i searched this subreddit and it seems like there isn't a recent (<3years) thread about the minimum and recommended specs to run Xcode (felt by the community).

So here i am with my question :

i'm leaning softly into app development, so i need a mac to run Xcode for IOS apps.
i won't make it a full time job, just personnal projects, so i'm willing to go kinda cheap on that one.

i'm looking into used/refurbs mac Minis and the jump in price between 2018 models (intel) and 2020 models + (M1-M4) is astounding, like 300%.

The minimum one i can buy is a :
- Core i5 3.0 GHz
- 8 Go Ram
- 256 Go Storage
- 277€

No info of RAM and storage types, but i guess DDR4 and SSD.

From the old posts in this sub i've seen people saying that 8Go RAM will put the simulator at a true struggle as well as 256Go Storage since the system itself takes up to 140Go.
So i upgraded to :
- Core i5 3.0 GHz
- 16 Go Ram
- 512 Go Storage
- 462€

That's already 1.5x the price, but still acceptable.

But people seemed to recommend at least the M1 chip, which would jump the price to over 600€+ and it's starting to be a bit much...

So what do you think ? is the Intel i5 good enough ? Are the other specs Okay ?

It's really the only thing i'm planning to do with this mac.

Thanks for your input

reddit.com
u/Rambo_sledge — 1 month ago

Undoable Powerplay mission : is this common ?

Hi, i just came across a weird situation : one of my powerplay missions of the week tell me to sell exploration data to universal cartographics of a specific system : STEFNA.

You may check for yourself, but STEFNA only has 2 stations : one starport and one outpost. NO PLANET OR SURFACE INSTALLATION.

Initially i went to the starport because i have an anaconda, and noticed universal cartographics was unavailable.

I ordered my cobra V and waited for what felt the longest 22 minutes of my life (hello OW) to go dock on the outpost, and universal cartographics was ALSO UNAVAILABLE.

How am i supposed to do this ?

The service isn’t listed in « unavailable services » on the system map, it’s just… not there.

Any clues ?

reddit.com
u/Rambo_sledge — 1 month ago

Is there a reason this one is so cheap ?

Hello, so i looked around this sub for references in 18650 batteries. One comment suggested liionwholesale.com so i went and had a look. Prices were expected, around 9-10$ for an 18650, but this one stood out : 4,80$ each ???

And at 3500mAh, which is near the highest possible for this type of batteries. So what makes it special ?

I don't even know if they ship here (France) but i'm intrigued now

u/Rambo_sledge — 1 month ago

Use 16.8V 4s li-ion as 12V supply

Hello, i have 2 items that i want to work together :

A 88.8Wh 4S li-ion nomad battery with a DC barrel output that outputs battery voltage (meaning up to 16.8V/ 16.5 with current SOH)

A DC-DC laptop charger that plugs into a cig-socket and has a dial at the back to boost voltage to either 18, 19, 20… up to 24V for about every laptop on the market (under 72W)

I already have a DC 5.5mm barrel to cig socket adapter, but that means i would feed 16.8V into the charger.

Its sticker says « input : 12V » with no range, but it has worked on my lifepo4 battery which is regularly at 13.2-13.5V and even 14.6 when charging.

Is there a common range 12V devices accept ? Do i have to buck down 16.8 to boost it back up through the charger ? Is there such a device as 16.8-12V barrel/cig socket regulator ?

The goal is more efficiency. The nomad battery has a 220V output that caps at 120W. It’s a square wave. I can charge my laptop with that but the conversion to 220VAC back to 20VDC is probably a lot worse than the DC to DC option.

Edit : based on automod, i might not be in the right sub and i’m sorry. But i don’t feel like other subs are much more relevant

reddit.com
u/Rambo_sledge — 2 months ago