Well, darn.

[phod]

This sure was a lot of work, and it didn't last very long. It was nice while it lasted though. My map has only one minor volcano, but 5 natural gas vents, and 3-4 hydrogen vents, and I have some wood production, so I guess I have to shift over to those for my main power. I do have a petroleum cooling loop up and running, so I hope to be able to cool it all with that. Ahh well, I'll know better next time.

 

[suxkar]

There is still a lot of heat to harvest,you just need to substitute the tiles with more doors for accessibility through a liquid lock. Then you can mine the solidified magma and move it to the steam chamber. Rinse and repeat. You lose half the theoretical heat but you can keep going until your magma biome is empty!
I did it once: from less the a quarter of the magma biome I got enough heat to keep 8 steam turbine at 100% (with some input blocked even) for 200-300 cycles. The only difference is I let the steam invade directly the magma. It needs quite a lot of micromanagement but you are freeing an entire biome, possibly reaching vulcanoes that you will be able to use. Also, it was very fun and scary.

[KittenIsAGeek]

Solidified Magma (aka hot igneous tiles) still have a lot of heat energy, especially when there's a lot of still liquid magma near them.

The problem, IMHO, is the distance you're pulling the heat to get it into your turbines.  Steam turbines are extremely efficient at removing heat energy.  Your heat path is going to be slow to replace all the heat that's lost.  

First, the abyssalite might be hot, but no heat energy is coming from that direction. OK, some is, but not enough to really matter.  Heat also prefers to move up, rather than to the sides -- but the path "up" from the magma is abyssalite, which won't be moving any heat.  

Next, each transition (magma, igneous, metal tiles, door, door, door, door, metal tiles, steam) from one conductive thing to the next is going to only work when there's a temperature differential between each side.  The greater the temperature differential, the more heat that will move.  I bet if you mouse over each of those doors, you'll see that there's a significant temperature change between each one, and there may even be a temperature differential from one side of the metal plate to the other.

You can solve your problem by closing the distance between your heat source and your turbines.  I've found that a single door sandwiched  between metal tiles (or diamond) works best, as there's only three points of thermal transfer.

Finally, you may want to put some automation controls on your turbines so that they only run within a certain temperature range.  This will prevent them from burning off all the heat without producing much power.  One turbine running at 180c can remove 4.179*2000g*(180-95) = 710k DTU/s.  One tile of magma at 1600c can hold 1 * 1000000g * (1600 - 180) = 1420000k DTU, which seems like a lot, but -- assuming you can transfer the full energy to a single turbine -- it will only run a turbine for roughly 2000 seconds or about 3 and a third cycles.  So your three turbines will exhaust all the potential thermal energy in 4 tiles of magma in 3 cycles.

[phod]

I did get it somewhat going again by doing what suxkar suggested, but focused more on getting my hydrogen power going, and reducing the waste from my SPOMs. At this point the entire area of magma below the doors has solidified. My cooling loop has stabilized now around -15c petroleum, so I'm not drawing as much power as I was at the start. I will definitely consider your suggestions Kitten, I appreciate all the info. I never have been very good at getting turbines working efficiently, I tend to muddle around with my own ideas to make things go (sometimes fail horribly), or borrow an idea from a picture, but never really look into what settings others are using on their automation. I kind of like the adventure of trying things out. 

[KittenIsAGeek]

1 hour ago, phod said:

I tend to muddle around with my own ideas to make things go (sometimes fail horribly),

That's the best way!  You're not having fun until Bahni accidentally floods your base with steam.   

My personal opinion is that you should always experiment with things.  One of my favorite professors used to tell us to "never assume that whatever you design will be used as intended.  It won't.  If there's another way to use something, somebody will find it."  Basically he was trying to teach us good design practices, but I took his advice a little differently: "Never assume that the intended use of a device is its only function."  

[suxkar]

1 hour ago, phod said:

I did get it somewhat going again by doing what suxkar suggested, but focused more on getting my hydrogen power going, and reducing the waste from my SPOMs. At this point the entire area of magma below the doors has solidified. My cooling loop has stabilized now around -15c petroleum, so I'm not drawing as much power as I was at the start. I will definitely consider your suggestions Kitten, I appreciate all the info. I never have been very good at getting turbines working efficiently, I tend to muddle around with my own ideas to make things go (sometimes fail horribly), or borrow an idea from a picture, but never really look into what settings others are using on their automation. I kind of like the adventure of trying things out. 

I have to say, after playing through 4 colonies 1000+ cycles each, adventuring inside the magma biome was the most enternaining thing of all. I was gonna give you a bunch more advice on tackling lava with steam turbines, but no spoilers, you'll figure it out youself! As was said by Kitten, it's only normal if Banhi floods your base with 1000C steam.. or falls inside a lava trap! Enjoy!

[phod]

I haven't had any problems with Bahni, but Burt scalds himself so often, I changed his name to Burnt.