Small Direct Heat Exchanger

[Piemur1]

How do I use the new direct heat exchanger since it only has inputs? I'm used to using Martian air with active vents to flow cold air from outside on one side and another active vent to flow my hab air through to cool the inside air. But they required an output on both sides to continually flow air back out. How do these exchange heat? Do you pump air in to pressurize then exhaust the temp-equalized air back out where they came in? Could I simply just have 2 passive vents, one outside and one inside with a valve to the outside air to cool my hab?

[ulzgoroth]

Maybe it just exchanges heat between the two connected pipe networks rather than having 'input' or 'output' apply?

[Whiles34]

In my experience, just connecting the two pipe networks to the exchanger will allow the heat transfer. Since flow/circulation isn’t really a thing in this game, no output is necessary.

[veryinky]

https://steamcommunity.com/sharedfiles/filedetails/?id=3023459187
I use a heat exchanger to make O2 and VOL pipe sections the same temperature before they're mixed for fuel mix.

[Herr Morlock]

Before the last major update, if you had two different gases with different temperature levels mixed into one ISOLATED pipe, the did not interchange their different temperature levels with each other until you did somehow interfer with that pipe network heatlike, somehow.

So, if you filtered those gases, without changing their mixed temperature, you would not get e.g. 200° Oxygen and 200° Nitrogen, but instead 100° Oxygen and 300° Nitrogen. If you would have connected that single mix network with a heat exchanger and fiddle it through its four slots, the temperature levels would adjust to each other, like they would do in reality, by itself.

Is the new, little heat exchanger used for that? To use less space and have less necessary slots for the some function?

[ulzgoroth]

Originally posted by Herr Morlock:

Before the last major update, if you had two different gases with different temperature levels mixed into one ISOLATED pipe, the did not interchange their different temperature levels with each other until you did somehow interfer with that pipe network heatlike, somehow.

So, if you filtered those gases, without changing their mixed temperature, you would not get e.g. 200° Oxygen and 200° Nitrogen, but instead 100° Oxygen and 300° Nitrogen. If you would have connected that single mix network with a heat exchanger and fiddle it through its four slots, the temperature levels would adjust to each other, like they would do in reality, by itself.

Is the new, little heat exchanger used for that? To use less space and have less necessary slots for the some function?

...What? That's extremely hard to believe, since temperature was always a property of a volume, not of a specific gas within the volume.

[Herr Morlock]

Yes, it sounds completely stupid, I know.

But at least that was the case before the "Phase change update" in July. Me and my group found this "mechanic" out randomly and wondered if it is a bug, coming from a difference of gas behavior in multiplayer (dedicated) vs. singleplayer, because we had problems reproducing that strange behavior (i.e. filtering out differently cooled/heated gases out of the SAME insulated gas pipe).

I think it was somewhere in the depths of their discord server, where a user pointed out, why this happens, and that it was not a bug, but how the mechanics are handling gases (at least at that time).

It might be, that they have already changed that with that "Phase change update", I could not try that out, yet, since my group has become bored of the game, and I am busy with other games in singleplayer, at the moment...

[Piemur1]

So then I have to ask, why doesn't my air in my hab cool when its connected to the heat exchanger connected to outside martian air with a passive vent. Passive vent outside with 2kPA -20c to 20c Martian atmosphere with a valve to the heat exchanger on one side, and another passive vent inside with 100 kPA >30c Hab atmosphere is my setup. Shouldnt the gases from outside chill the atmosphere to my hab? Or is it because the atmosphere outside is too low? I'm trying to make a low-energy use early-base "Air Conditioner" by exchanging the heat to the outside. A passive vent basically sets the contents of the pipes to the same as the room they're connected to, right? And a vent outside is basically connected to the entire exterior atmosphere.

[Herr Morlock]

Originally posted by Piemur1:

So then I have to ask, why doesn't my air in my hab cool when its connected to the heat exchanger connected to outside martian air with a passive vent. Passive vent outside with 2kPA -20c to 20c Martian atmosphere with a valve to the heat exchanger on one side, and another passive vent inside with 100 kPA >30c Hab atmosphere is my setup. Shouldnt the gases from outside chill the atmosphere to my hab? Or is it because the atmosphere outside is too low? I'm trying to make a low-energy use early-base "Air Conditioner" by exchanging the heat to the outside. A passive vent basically sets the contents of the pipes to the same as the room they're connected to, right? And a vent outside is basically connected to the entire exterior atmosphere.

Hm, it could be true, that the heat exchange does not effctively work when the pressure difference is too big. You should try to increase the pressure/amount of the exterior gas, within that exterior pipe (you will have to use either a gas pump after the passive vent, I guess, or an active vent, instead of the passive one) and see if it works, then.

[Piemur1]

Is compression heating a thing? Like, when you compress things, does it heat up?

[ulzgoroth]

Originally posted by Piemur1:

Is compression heating a thing? Like, when you compress things, does it heat up?

In reality, but not in Stationeers.

[powerkek]

Originally posted by Piemur1:

Is compression heating a thing? Like, when you compress things, does it heat up?

There used to be a mod to make this happen, but it got broken in the condensation changes. You could smelt ore with just a volume pump, or get -200C air emptying out your starter oxygen tank.
https://steamcommunity.com/sharedfiles/filedetails/?id=2882541343
Author says he will update, so maybe something to keep an eye on.

[Piemur1]

Okay, so what I did was just used a simple loop outer to outer. An Active Vent outside into a pipe that comes into my hab with some radiators, then exhausting out the air with a passive vent back outside. Because the passive vent has a lower flow rate than the active vent can suck in, it pressurizes the martian air a bit which gives the radiators some good efficiency. Works really well at night, but decently enough during the day. I got an IC program that runs it when it gets too warm.

Only problem I'm having now is that I need food, and the tomatoes are growing just too slow to get enough for canning. I also screwed it up and don't quite know how to USE the canner. Do I put 3 cooked tomatoes and an empty can in the top slot of the packing machine to make the canned tomato soup? My first attempt had me putting an empty can in the bottom slot and the cooked tomatoes on the top, but it failed and disappeared the food. Or do you all recommend another kind of plant for my hydroponics station?

[ulzgoroth]

Originally posted by Piemur1:

Okay, so what I did was just used a simple loop outer to outer. An Active Vent outside into a pipe that comes into my hab with some radiators, then exhausting out the air with a passive vent back outside. Because the passive vent has a lower flow rate than the active vent can suck in, it pressurizes the martian air a bit which gives the radiators some good efficiency. Works really well at night, but decently enough during the day. I got an IC program that runs it when it gets too warm.

Only problem I'm having now is that I need food, and the tomatoes are growing just too slow to get enough for canning. I also screwed it up and don't quite know how to USE the canner. Do I put 3 cooked tomatoes and an empty can in the top slot of the packing machine to make the canned tomato soup? My first attempt had me putting an empty can in the bottom slot and the cooked tomatoes on the top, but it failed and disappeared the food. Or do you all recommend another kind of plant for my hydroponics station?

My impression is tomatoes are best if you're going to can, which you should.

They're not the ideal for fast food, though you could just eat a cooked tomato or two if you're that short.

I think it's all-in-the-top but I haven't run it yet myself. I planted potatoes first (better at the 'just cooked' stage of preparation) and my tomatoes haven't started fruiting yet.

[LoboFH]

It's 5 cooked tomatoes...and yes, you put them and the can in the top slot.

Yeah, potatoes are the best for early production, tomatoes and pumpkin grow very slowly, in some maps I had died if I haven't planted potatoes first. 2-3 plants keep you fed in its loop.

[Herr Morlock]

Originally posted by Piemur1:

Okay, so what I did was just used a simple loop outer to outer. An Active Vent outside into a pipe that comes into my hab with some radiators, then exhausting out the air with a passive vent back outside. Because the passive vent has a lower flow rate than the active vent can suck in, it pressurizes the martian air a bit which gives the radiators some good efficiency. Works really well at night, but decently enough during the day. I got an IC program that runs it when it gets too warm.

Only problem I'm having now is that I need food, and the tomatoes are growing just too slow to get enough for canning. I also screwed it up and don't quite know how to USE the canner. Do I put 3 cooked tomatoes and an empty can in the top slot of the packing machine to make the canned tomato soup? My first attempt had me putting an empty can in the bottom slot and the cooked tomatoes on the top, but it failed and disappeared the food. Or do you all recommend another kind of plant for my hydroponics station?

If you want food FAST, you could use rice for some time, until you have stabilized the amount of packaged food. If you want to cheese the game, you could simply plant mushrooms in the dark and eat them raw. 9 of them will be more than enough to keep 1-2 person alive without the need of (artificial)sunlight.

Keep in mind that it makes a difference if you fill in the empty can BEFORE the veg. ingredients, or if you fill it in AFTER them. The smallest mistake destroys all your ingredients (including the can).