Heat management during drilling

[astroheiko]

Due to minor heat problems during a mission with ISRU, some questions have arisen in me.

Here are the things I know. Static and foldable coolers have their differences in the cooling of adjacent parts. Therefore, I usually take the foldable.

JadeOfMaar was so nice and then gave me a small explanation, the corresponding section

 

2 hours ago, astroheiko said:

Then it is probably because of my design. Just looked up again ... Yes - it is so. Convert-O-Tron 125 need 100kw Cooling and 2 big drills to 100kW each, totaled 300kW. I have only 4 Small Thermal Contol systems. They can carry only 200kW. So a drill turned off and .... worked. Strange is only that the utilization of the radiators barely reaches 30%. So I assumed that they were not the problem.

Core heat (from reactors, drills and converters) are a separate thing from general heat as from the atomic engine or aerobraking. Once your radiators are near enough to the part that generates core heat and their total cooling power in kW meets or exceeds the total amount of core heat, that's it. There's no more math. Do know that static radiators can only be attached as far away as the immediate parent part of the drill or converter but folding radiators can be attached anywhere at all.

General heat as from aerobraking or atomic engines thrusting is what is handled and considered by the cooling rate in %. The hotter your ship is, the harder the radiators work, the faster they become the hottest part on the ship and the higher that cooling % goes up.

 

First I show the corresponding vehicle

 

So far I have always calculated the required cooling capacity:
The Convert-O-Tron needs a cooling capacity of 100 kw and the two drills 200kw. The small foldable radiator has a power of 50 kw, so I need 6 pieces. Since in the picture are only 4, this should be the reason for my problems.

The text of JadeOfMaar has now confused me and left more questions than answers, which was certainly not his intention.

And here are my questions:

What is the meaning "Core Heat xFer" in the radiators. I can not translate "xFer".
Is this the value for the "required cooling" for the Convert-O-Trons?
Do the Convert-O-Trons have built-in cooling? If so, is that the "Max Cooling" value?
Then the big did not need any, right?

If all this is not the case, how can one find the coolers needed?

 

Greetings

[Tyko]

There's a bug in 1.2.2 with drills overheating. This might be your problem. It's covered in this thread

 

 

Edited February 24, 2017 by Tyko

[Cubfan]

I've seen the bug reports on overheating, but I still haven't run into them. Not even drilling asteroids. I don't know if it matters or not, but I always use the same formula: One thermal control system per drill. Small ones for small drills, medium ones for large drills. But most important of all is the engineer. A four or five star engineer seems to keep things running smoothly.

[bewing]

5 hours ago, astroheiko said:

Due to minor heat problems during a mission with ISRU, some questions have arisen in me.

Here are the things I know. Static and foldable coolers have their differences in the cooling of adjacent parts. Therefore, I usually take the foldable.

The Convert-O-Tron needs a cooling capacity of 100 kw and the two drills 200kw. The small foldable radiator has a power of 50 kw, so I need 6 pieces. Since in the picture are only 4, this should be the reason for my problems.

The text of JadeOfMaar has now confused me and left more questions than answers, which was certainly not his intention.

And here are my questions:

What is the meaning "Core Heat xFer" in the radiators. I can not translate "xFer".

"x" is a silly abbreviation for "trans" -- xfer just means transfer.

5 hours ago, astroheiko said:

Is this the value for the "required cooling" for the Convert-O-Trons?

"Required cooling" is how much cooling the converter needs to stay at a constant temperature.

5 hours ago, astroheiko said:

Do the Convert-O-Trons have built-in cooling?

No. They radiate a little bit of heat into their surroundings when they are very hot, but that is a small effect.

5 hours ago, astroheiko said:

If so, is that the "Max Cooling" value?

No. This is the source of your problem. "Maximum cooling" is the maximum that the converter can possibly use. The 125 converter has a required cooling (to stay at a constant temperature) of 100kW, and a maximum of only 50kW. So it is impossible to keep the 125 converter at a constant temperature. And it is this way on purpose. If you want the converter to stay at a constant temperature, you have to use the other converter.

5 hours ago, astroheiko said:

Then the big did not need any, right?

The 250 converter has a much higher maximum cooling, so it usually does not overheat.

 

[Snark]

1 hour ago, bewing said:

The 250 converter has a much higher maximum cooling, so it usually does not overheat.

Unless you run more than one of its four converters at the same time.  But even then, it generally doesn't overheat a lot in my experience... mainly because one of the big converters can handle the output from a lot of drills, i.e. more drills than I usually have on a mining ship, so I generally find that it's starved for ore, which reduces the amount of conversion it's doing, which means it's not producing heat as fast as it might, so it doesn't get too terribly hot.

 

[astroheiko]

9 hours ago, Tyko said:

...

I have also read about it. However, the person concerned seems to have had no cooling at all. This is not the case with me - I had only too little cooling.

 

6 hours ago, Cubfan said:

...

I usually have an engineer, just like you. Here I had however an unmanned probe and also still the bad Convert-O-Tron. And as I just read, it overheats, because the required cooling can not be transferred.

 

4 hours ago, bewing said:

...

THIS answers all my questions. Thank you so much.

 

3 hours ago, Snark said:

...

If it is possible I always take the big one. Here I had to save weight. The stupid thing is that the ISRU always switched off during the time acceleration. I should have tested it before.

 

I thank you all for your answers, you have helped me very well - especially the answer of bewing. So he's the "winner" and gets a cookie .

 

Greetings

Edit: Sorry, just ran out of likes. You'll get some tomorrow

Edited February 25, 2017 by astroheiko

[Tyko]

20 minutes ago, astroheiko said:

I have also read about it. However, the person concerned seems to have had no cooling at all. This is not the case with me - I had only too little cooling.

 

 the "person concerned" was me and I had quite a bit of cooling present. Entire craft worked just fine under 1.2.1. When I upgraded to 1.2.2 suddenly I was getting massive overheating with the same ship. 

[astroheiko]

@Tyko

Please forgive me, I am terribly awkward today. Was no intention. 2 o'clock at night in Seatlle - and still awake. KSP does not leave you any peace?

Nice greetings from Germany