Xadhoom Posted November 14, 2018 Share Posted November 14, 2018 So i been seding a few rockets away, i just noticed this: Some tiles below the rocket have become so hot they melted.. makes me wonder, i maybe can use this to make steam for a steam generator. Link to comment Share on other sites More sharing options...
Neotuck Posted November 14, 2018 Share Posted November 14, 2018 You can but it would be temporary not sustainable Link to comment Share on other sites More sharing options...
Nitroturtle Posted November 14, 2018 Share Posted November 14, 2018 Anything in the path of (and below) a hydrogen rocket needs to withstand +2500° C temps. I'm in the process of setting up a 4 bay rocket silo that has steam generators hooked up to power all the cooling for the bays as well as my LOX and LN2 setups. I designed everything in debug, and I'm now going through building it all in survival. I have it setup to pull as much heat as I can from the rocket launches and feed that back into the generators. I already have the aquatuners running and just waiting on everything to get to temp so I can start launching rockets again (I just re-did my previous dual bay silo). I'll post some screenshots when I'm finished, which looks like it might be tonight. Link to comment Share on other sites More sharing options...
SakuraKoi Posted November 14, 2018 Share Posted November 14, 2018 Just your usual magma tile, nothing to see here folks! (yer, insulated tiles do not work with rockets, on the contrary, due to how they heat, they actually retain the heat which increases by a set factor. I wonder if there still were Abyssalite tiles if that is how one could make liquid tungsten~) Link to comment Share on other sites More sharing options...
Sasza22 Posted November 14, 2018 Share Posted November 14, 2018 I guess everything under the rocket needs to be made of obsidian wolframite and tungsten or it risks melting otherwise. 23 minutes ago, SakuraKoi said: I wonder if there still were Abyssalite tiles if that is how one could make liquid tungsten I don`t think it can heat it above 3500oC if the rocket exhausts up to 2500oC but maybe i`m wrong. You can always drop some abyssalite under the rocket and try if it works. Link to comment Share on other sites More sharing options...
psusi Posted November 14, 2018 Share Posted November 14, 2018 How does the heating work? Does it just make everything instantly 2500 C or does it add a certain amount of heat so lots of specific heat can soak it up without getting stupid hot? How about a big pool of water with some cooling pipes to bring the temperature back down after blast off? Link to comment Share on other sites More sharing options...
Nitroturtle Posted November 14, 2018 Share Posted November 14, 2018 13 minutes ago, psusi said: How does the heating work? Does it just make everything instantly 2500 C or does it add a certain amount of heat so lots of specific heat can soak it up without getting stupid hot? How about a big pool of water with some cooling pipes to bring the temperature back down after blast off? The second one. You can definitely soak it up. Previously, I was using pwater to create steam that vented off to space until the area was cooled. This also required robo-miners, as it created lots of sand and dirt, but it worked well enough at the cost of wasted pwater. The setup I'm currently working on uses very cold super coolant in radiant pipes behind my miners. In my testing so far, it's enough to turn the steam from the rocket (hydrogen engine seems to output steam + CO2) into water and keep my miners plenty cool. I've also built a large door separated heatsink that ties into my steam gen room to hold the heat and use it to generate power to condense more fuel while waiting for the rocket to return. Based on my testing, it's going to take several launches to get enough heat into the heatsink to be useful though. Link to comment Share on other sites More sharing options...
Nitroturtle Posted November 15, 2018 Share Posted November 15, 2018 3 hours ago, Nitroturtle said: Anything in the path of (and below) a hydrogen rocket needs to withstand +2500° C temps. After looking a little closer, I'm only able to see temps up to about 2000° C as a rocket launches. I'm using ceramic piping for fueling, which seems to be fine. Though it's insulated and doesn't seem to gain much if any heat from the launch. I have had iron wires melt, so for anything metal you'll need to withstand up to a bit over 1500° C at least, so maybe that's a better guideline. Another tip, build your silo high enough so it has full space exposure. If you want to reclaim the heat/gas, you can always use wallpaper (obsidian works well). But if you build below the area with space exposure, you have no choice but to deal with the hot gas that lingers. This is part of the reason I'm re-doing my setup. Since rocket missions take so long to complete it really takes awhile to get enough launches in to see how everything is going to hold up. Also, with everything in a vacuum, it just keeps getting hotter with each launch. Just make sure you plan for anything in the silo to handle very high temps and you'll be fine. Link to comment Share on other sites More sharing options...
fishpear Posted November 15, 2018 Share Posted November 15, 2018 build your rocket in the space and everything will be fine Link to comment Share on other sites More sharing options...
SackMaggie Posted November 15, 2018 Share Posted November 15, 2018 But can sunk rocket in liquid and see bobble of gasses coming out. Link to comment Share on other sites More sharing options...
Coolthulhu Posted November 15, 2018 Share Posted November 15, 2018 13 hours ago, Nitroturtle said: Anything in the path of (and below) a hydrogen rocket needs to withstand +2500° C temps. The upper cap is 3200K. It's a hard cap, the heating will simply stop at that value. It's not enough to melt abyssalite (or insulation) into tungsten. 12 hours ago, psusi said: How does the heating work? Adds heat divided by heat capacity and mass. All engines have same cap, but different heat per second (technically per 200ms). The heat is applied to 5x10 rectangle below the engine, with power divided by vertical distance from the engine. That is, tiles directly below get full value, ones below them get 50%, ones below those get 33% and so on. Heat is applied only to materials covering whole tiles, but bypasses obstacles. A 3 tile thick block of abyssalite will not prevent engine from heating things under it. Link to comment Share on other sites More sharing options...
tzionut Posted November 15, 2018 Share Posted November 15, 2018 Quote build your rocket in the space and everything will be fine He wanted to say that is better to build the engine suspended in vacuum area. Without horizontal tiles under the engine. In development build when i try to build the steam engine without an horizontal platform the game crashes, now i see that bug is resolved. I was trying in my previous build to capture in magma the heat from the rocket launch and melt whit it regolith... Link to comment Share on other sites More sharing options...
Nitroturtle Posted November 15, 2018 Share Posted November 15, 2018 So here's how I'm using the heat. It's taken a few launches to bring the heatsink up to temp, but now I can basically run the turbines as needed by pulling heat from the heatsink. I've only launched rockets from the left side so far, since I ran out of steel after building this. Currently working on farming more steel to finish the other two rockets. I'm still tweaking a little, and I'm kinda kicking myself for not just running pipes from the robo-miner loop through the heatsink as a way to pull that heat into my turbines. I may break it open and change that. I also initially didn't intend to pull any power out of this system into my main grid, but I'm reconsidering that also since it seems to make more than I need for the connected systems. Either way, there's a lot of heat, and this turns it into a lot of power. Spoiler Link to comment Share on other sites More sharing options...
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