Small Ship Version is underpowered and the Staion seems to be not affected at all. Big Grids are fine i think. Not much tested.
I need to turn off my Atmospheric Thrusters of my small Ship (which is like everything) to let the 6 Radiators cool it down with -0.04 °C. On the other Hand, my Large Ship has no problems while the two Refineries and both Assemblers are working (4 Panels and 2 Radiators).
Maybe add a SmalShip version of the Panels or increase the cooling power.

And another thing: I may be wrong but i havent seen any Pirate Ship since i've used your mod. Do they suffer from overheating and just explode before they vom close?

NPC ships are not affected by this mod. Once a player owns a block on the grid, it is then affected. I agree with small ship version being slightly underpowered. I think that when I lower the thruster heatproduction multiplier it will help.

If you start on Earth you shouldn't even need radiators, air cools you a lot. Mars is also pretty cold, if you're on a vehicle you have contant with much bigger cooler than yourself. The only real problem I see is being in the sun in space when you have no cooling. Obviously thrusters and refineries have waste heat that needs to be get rid of but not on planets. Maybe on Mars and moons.

Maybe it would be a good Idea to use the Panels to cool down a Ship and the Radiators to heat it up. So that you need to heat your Ship on Planets and cooling on Moons and Space where only Radiation works.
I mean it's called Thermal Mechanics for a Reason, right? ^^

Well you have refineries that can provide some heat and reactors provide tons and tons of waste heat. Engines don't have much problem with heat since exhaust is also cooling them.

In real life you have heat problem with solar panels that are 24/7 tracking sun and nuclear reactors. But if you are in shadow all the time then you need heating. On mars you need a lot of heating. Earth without atmosphere would be -18C average temperature.

In space engineers you wouldn't heat ship that much from using thrusters, but from nuclear reactor.

I don't know how far modding in SE can go but if you could have direct contact reactor cooling sort of like refinery module, this would kinda be realish or some sort of heatpipes that go to heat radiators. If you could pipe all the heat out to radiators you can have your ship at safe temperatures and you'd only need those general place anywhere radiators for generic heat from refineries, arcs and some thruster waste heat.

Simply put:
Reactor - tons of heat big problem if you don't have direct cooling/heat pipes on it.
Thrusters/Solar panels low heat added.
Refineries/Arcs - medium heat
You can even split thrusters - atmo no heat + reactor heat stress, hydrogen low heat, ion low heat + reactor heat stress

Ship design should be - direct and heatpiped reactor cooling (no matter where you are)
Refineries and arcs should have heat problem only in space
Solar panels - space only cooling

Mars should require heating so you could have some sort of heat exchange that can pull some heat from reactor to ship.

Too cold ship - losing control and batteries drain power for heating
Too hot ship - melty melty

Direct reactor heatsink could go up to 500-750C
General heatsink should be about as it is now.

All of these things are possible, its just a matter of time and know-how.

I think that adding another Layer of Complexity will just make things more complicated than they should be. I mean it is not a Game about Temperature Management, right?

Heatpipes would be a already known Feature. You can connect Blocks with Pipes to transport something. So using them (Conveyor System) to transport heat back and forth to Radiators and Panels (like you do with Gas) fits into an existing Design and Players would easier get used to it.

There is just the one Thing that bugs me:
Remote Systems, like Outposts, are now a risky thing because there is no Temperature Management as in, lets say Electricity. You get an audio Warning and it is representet on your Cockpit-HUD. But if youre not in a Cockpit then the Power runs out. That's not such a big Deal like when your Ship burns down because some Assembler is turned on by a Script or something
Anf to get back to the Outpost thing:
If something goes wrong you will not get noticed and even if, at the time you arrive the hole Grid already died a slow heatdeath.
And beside that you won't even get noticed that the ship you're standing on or working on is overheating.
Thats the hard task. Get some kind of warnings for the Player. A HUD-Element would be nice.
The Chat disappears to fast to provide such vital Informations long enough and Antennas can be read by anyone.
Maybe TextHud-API provides some useful functionality?

Isn't the whole point of thermal mechanics make things more complex and not just another slap more heaters because you need more heat?
I swear some people should not be allowed to comment.

Complexity = good
Simple Grind = bad

I bet yokmp is unable to understand complex things with his simple mind and more heat slap more radiators mentality.

Authors of this mod are trying to make fun and complex system that is not another boring number game but thing that requires though how you run and design things.

Consider the following:
Rapid depressurisation of oxygen tanks to dump a lot of heat fast, at the cost of a resource that takes some time to recover

There's already that resource, ICE. No need to create another one. Its a neat idea, perhaps works a bit better than heatsinks in terms of things required to make or do.

I am wondering maybe using an air vent and checking that the space it is seeing is NOT enclosed and it can release air to cool down.

Probably gonna stick with Ice and a vaporizer block

Oxygen "thruster" with a tiny force and negative heat output might be simpler to implement.

I love the new dimension of gameplay this adds. Since the big focus seems to be on cooling things down, I'd like to make a request for some heating devices, which can be switched on and off to counter the cold vacuum of space, or a dead moon. Is it possible to have the player detect ambient temperature also? Thanks a lot for making this awesome mod!

I'm looking into adding player heat, and also introducing having temperature get to low.