Posts by MauveCloud

For those concerned with the difficulty of obtaining Uranium-235 when using GregTech, I just noticed that GemBlocksForGreg has an option in its config file to help with that.

One thing, which you might have already checked, but isn't clear in your post: are you sure the volume handled by the miner actually had any of the other ores?

You're not the first to think of that, but last I knew, components heated in an an EU reactor could not be cooled in a fluid reactor (or vice versa, and they get tooltips saying so).

Quote from laurynasl

1280 Plutonium would require 6 * 9 * 400 * 1280 = 27648000 (or ~422 full chunks) red granite.

Wait, why are you getting your plutonium from red granite instead of from plutonium ore or depleted uranium rods?

Quote from Blood Asp

I was a bit bored at work, so calculated the cost to produce one neutronium ingot with the fusion reactor assuming no naquadah ore found:
16 Chrome
1344 Thorium
1280 Plutonium
7h36min fusion runtime
44,225,599,488EU

Wait, it's really possible to make neutronium without naquadah ore? Just now I tracked down the NEI recipes for getting lutetium (in tiny piles) from depleted thorium cells to make the americium, but I haven't seen a way to get Naquadria without starting from either naquadria ore or enriched naquadah ore.

Edit: found one way to get naquadria from those ingredients, but centrifuging naquadah dust only gives a 10% chance of a tiny pile of naquadria dust, so how can you come up with such an exact cost list?

Quote from junglejim

I'm trying to harvest oil from a geyser in the ocean. Maybe I'm doing something wrong with the placement but it doesn't seem to work quite right. I placed the pump directly above the top of the geyser and next to the geyser, in each case it deploys a single mining pipe. pumps a single bucket of oil into the pump's tank, and then stops. Debug scanner says it's got full EU so it doesn't seem to be a power problem. It works fine with plain water so maybe the oil is the problem. I could use a buildcraft pump I guess, but I try to do everything with gregtech when possible.

The problem could be with the geyser shape instead. iirc, BuildCraft doesn't generate geysers of water, but if you can find a lake of oil rather than an ocean geyser, you could check how the GT pump handles that.

I don't think this is the appropriate thread for that, since this guide is for GT5, not GT6. I haven't really used GT6 myself, but I skim new posts in the main GT thread, and I remember reading that a lot of metals now require the crucible rather than the furnace, so I wouldn't be surprised if that applies to bronze dust as well.

However, for something more on topic, there's something I've been meaning to mention for a while: the guide recommends making a gear mold for steel gears for a bending machine, but the electric pistons in the recipe for a bending machine require small steel gears, which can't be molded with an alloy smelter (steam or otherwise).

Edit: timelord92 also, since GT6 is still in "open alpha", and you say you're new to GregTech, I suggest you either wait until GT6 has at least reached "open beta" before trying it, or use GT5u instead: [GregTech-5][1.7.10-FORGE-1355+][Unofficial but approved Port] Finally a real endgame! Now new: Achievements!

There's a good chance a newer version of Railcraft will help. According to the Railcraft wiki, the latest version is 9.6.1.0, but I just tried version 9.5.0.7 with GT 5.08.18, and several of the Railcraft items that had no recipes with GT 5.07.07 showed recipes this time.

Quote from Sapient

I mean 1 Plutonium mix vein contains about 100-150 blocks of Plutonium Ore, which could be converted to 200-300 plutonium Ingots. That's only 70-100 Pellets of RTG and can produce only 220-320 eU/t. We need to explore 3-4 of plutonium mix veins to get same eU/t by RTGs as just one hot MOX reactor.

I see your point, but I think your math is a bit off there. Despite what it says in the tooltip for the RTG, 6 pellets in one RTG can produce 32 EU/t, so 96 pellets can produce 512 EU/t total (using 16 RTGs).

Edit:

Quote from Sapient

That may be even better. Thanks a lot. In this case technology steps of nuclear energy would be:
1. Uranium eU reactor
2. Uranium hU reactor
3. MOX eU reactor
4. RTGs

Don't forget you can have thorium in there somewhere, and fusion reactors after.

Quote from Sapient

RTGs is even better, you right again, but there is not so easy (in early and mid game) to get number of plutonium needed to produce same amount of eU/t as simple reactor. But in late game that must be good choice.

Wait, how is plutonium so hard to get in early and mid game (other than Blood Asp's plan to remove it from default oregen)? With GT5/GT5u, it generates as ore in the mix vein named after it. It requires a tier 3 pickaxe and a hazmat suit to mine it, but it can be smelted in a regular furnace, and macerating first (which can be done in a steam macerator) gives 222% yield. The hard part of making RTG fuel is the iron - it takes 54 iron ingots per pellet, and an MV-tier metal bender to convert them to dense iron plates (though there was at least one build of GT5u that left the compressor recipe for dense iron plates enabled, and I'll admit I used that a bit)

Quote from Sapient

You were right, hot fluid mox reactor produce more hU than same cold one. 84% heated = 201.72% hU production. BUT, same normal reactor (without coolant) 84% heated = 440.00% eU production. So most efficient way to use MOX fuel is hot normal reactor. And because of U235 is too expensive to make uranium fluid reactors profitable, it is useless at all.

All fluid reactor infrastructure, cumbersome, resource expensive, are useless because simple hot MOX reactor is more profitable. It produces 55.83% more eU per one Uranium 238 Ingot.

The infrastructure is the main thing that's discouraged me from setting up a fluid reactor in survival myself. I've been setting up RTGs, which are probably more resource expensive (especially in terms of the iron; the plutonium is easier to obtain in GT5u than with just IC2), but they're zero maintenance and more compact than fluid reactors (in a 5x5x5 volume, I could place 75 RTGs (three 5x5 walls) and cables between them, which when fully populated, would produce 2400 EU/t; I haven't seen any fluid reactor designs to match that, and that's not even counting the extra space fluid reactors need for the LHEs, steam generators, condensers, etc.). If I can get some replies to my thread asking for advice on storage organization, I might relocate my base to be under a large crop-farm I built high over swampland, and I would probably also add wind power around the walls of my farm.

However, there are a couple of ways I'm aware of to make a fluid reactor more efficient in terms of fuel consumption (though probably more cumbersome and resource expensive to set up, and would be applicable to uranium and thorium rods as well as mox):
1. Run a Mark V reactor design with redstone timing, since vents in a fluid reactor can continue outputting hU into the coolant fluid even during the cooldown time (a simple design for this is 7 to 9 quad fuel rods in the upper left corner, vents in most of the rest of the area, but space or non-heat-accepting components (e.g. heat-capacity plating) adjacent to the fuel rods).
2. Run a primary fluid reactor that doesn't directly vent the heat, but instead absorbs the heat with 60k coolant cells (or 360k helium/NaK cells since they're available in GT5u), and one or more secondary fluid reactors that use heat exchangers and vents to transfer the heat back out of some not-quite-destroyed coolant/helium/NaK cells.

Quote from Sapient

That was exactly the reason i asked Blood Asp to change U235 recipe.

You don't actually have to wait for Blood Asp to make changes - you can adjust values in WorldGeneration.cfg to make certain mix veins include U235 ore, or you might be able to set up some MineTweaker processing recipes to provide alternate ways to obtain it.

Quote from cmdrrimmer

When I replace my Gregtech version with the latest build (gregtech_1.7.10-5.08.18) of the unofficial from this thread, the liquid and solid fireboxes from Railcraft do not show a recipe in NEI in-game anymore. I have verified the recipe appears when clicking on the two fireboxes in NEI prior to trying the new Gregtech mod.
Anyone have any ideas what is going on ?
I believe i have noticed another issue where some recipes show up in NEI, i place the items in the crafting grid, the output appears, but it wont let me drag the output to my inventory. I can't remember exactly what recipes do this as I post this question. If i remember I will update this post.

Thanks in advance

CmdrRimmer

I ran into that issue with Railcraft a few months back, when I was using GT 5.07.07, and I was told that GregTech tries to modify the recipes for them, but since their internal names had been changed, the recipe modifications failed. I thought that Blood Asp had fixed that, though I hadn't tested it (I'm not using Railcraft atm), and for all I know Railcraft could have changed the names again. Do any of these other Railcraft items show crafting recipes for you with GT5u installed: the steam oven, the engraving bench, the rock crusher, the feed station, steel tank valves/gauges (not counting the painting recipes), the void chest, or the metals chest?

Okay, some more questions whose answers might help others track down your issue:
1. What kind of plasma are you giving it through the input hatch and how fast?
2. What kind of turbine are you using (size and material)?

Quote from OsmeOxys

How exactly does the large plasma gen work, exactly? I stuck a zpm energy hatch on the back and got very little energy out, no where near zpm energy. Is there something Im missing?

I haven't dealt with them myself (yet), but I think what you want is a dynamo hatch. (energy hatches are for energy input, dynamo hatches for energy output)

Quote from Sapient

But how can u explain my stable for a long period results, same to cold and heated fluid reactor?

I can't explain that. I'm having trouble believing it, even for an old build. Are you sure you were really using MOX fuel? According to my newer planner, using MOX in that design in a fluid reactor preheated to 84% should explode at 117 seconds.

Edit: I tried your design myself in creative mode with IC2 build 658, the latest Forge, and no other mods, using MOX and preheating to about 61% before putting in the central advanced heat vents that are directly adjacent to fuel rods. Several components failed after a few minutes, starting with the advanced heat vents above and below the central fuel rods. Shortly after that, the gui switched to EU output mode, then it exploded.

Quote from Sapient

I am not sure u get same results with full reactor cycle. Short time experiments may be incorrect because we cant be sure it works same amount of ticks every time.

Sorry, I think I used the wrong terms. I meant to say you should use the button to run the reactor for 1 reactor tick in each of steps 1 and 3; 1 reactor tick equals 1 second, thus variation in the number of redstone ticks that the button is active for (10 or 15 depending on whether it's a stone or wooden button, and there are 10 redstone ticks per second) is very unlikely to distort the result.

Quote from Sapient

I checked it today with industrialcraft-2-2.2.658-experimental.
This reactor
http://www.talonfiremage.pwp.blueyonder.co.uk/v3/reactorplan…ranpdd9x31o2t4w
with MOX fuel produce same 800 hU/t at 84% heat as at 0% heat.

That's because the heat output of the fluid reactor directly relates to the vent cooling, and that design already makes full use of the vents it has. That doesn't prove the MOX fuel itself isn't generating more heat. To see what I mean, use this much simpler design:
http://www.talonfiremage.pwp.blueyonder.co.uk/v3/reactorplan…jgt7j6grfpo5wjk
Use MOX instead in a fluid reactor with two redstone ports, one with a lever and one with a button.
1. Use the button to run the reactor for one cycle, and check how much durability the 10k coolant cell has lost (using F3+H).
2. Pull out the coolant cell and use the lever to run the reactor until it reaches at least 50% heat, then stop it with the lever.
3. Put the coolant cell back in, run it for one cycle with the button, and check how much durability it lost this time.
When I tried that in creative back in April (although it might have been with a dual fuel rod rather than quad), I found that the durability loss on the coolant doubled once the reactor heat hit 50%.

Railcraft Tank Valves at the bottom of a tank output automatically, so you don't actually need pump covers.

Quote from Sapient

Mox fuel does not increase hU production during heating up, only eU. So its no reason to make hot fluid reactors.

In a fluid reactor it does increase hU production once it's heated up enough, though last I checked it was a threshold for higher hU rather than a linear progression like mox in an EU reactor.

I'm curious why you need it to run constantly. You might consider setting up multiple battery buffers and/or a large Railcraft Tank for the steam, and running the boiler in bursts.

Quote from Drawfox

How many Coke Ovens would I need to keep a Large Bronze Boiler running, assuming that I am using Wood Logs to generate the charcoal and creosote, and feeding the boiler with both?

According to post #4 of this thread, 1 bucket (1000L) of creosote burns in a large boiler for 15 ticks, and according to the FTB wiki, charcoal will burn for 20 ticks. If you put 4 logs in a single coke oven, that will take 7200 ticks to make 4 charcoal and 1000L creosote, which will power the boiler for 95 ticks, so as near I can figure, you would need 7200/95=75.8 coke ovens to keep a large boiler running constantly (though that's not taking into consideration how long it might take for the fluid and items to be piped to the boiler, so you might actually end up needing a few more).