Polymer Press producing naphtha after fixed temp update?

[tulkaz]

when input petroleum is higher than 159.9c, polymer press does not produce plastic but naphtha.

I'm not sure it emit naphtha directly or the plastic melts as soon as produced but guessing there's no plastic-spitting motion from the building, I think it just emitting naphtha. Should I consider this as intended one?

[wronny]

In the test branch the Polymer Press emits its contents based on the temperature of the input materials, with the following minimum temperatures:

• Plastic >=75°C
• Steam >= 200°C
• Carbon Dioxide >= 150°C

So this seems to be intended.

[chemie]

intended or law if unintended is more likely.  they made the wholesale change and didn't think about this one..

[Lancar]

Overall, I think it's fine. The heat has to go somewhere.

But I can imagine two decent fixes for this:
1, Make the machine output a warning when input material is above the state-transfer of the output

2, Make the machine absorb the extra heat into itself.

or both?

[wronny]

7 minutes ago, chemie said:

they made the wholesale change and didn't think about this one..

They put most building outputs into one of two categories either at building temp or at (avg. of) input temp(s); with building specific minimum temperatures for each output, so I highly doubt that they "didn't think about this one".

 

[tulkaz]

16 minutes ago, Lancar said:

Overall, I think it's fine. The heat has to go somewhere.

But I can imagine two decent fixes for this:
1, Make the machine output a warning when input material is above the state-transfer of the output

2, Make the machine absorb the extra heat into itself.

or both?

I'm positive with recent fixed temp update but I think state change of the output should be reconsidered. What is worse is that I can't even change naphtha back to plastic.

[chemie]

24 minutes ago, Lancar said:

Overall, I think it's fine. The heat has to go somewhere.

But I can imagine two decent fixes for this:
1, Make the machine output a warning when input material is above the state-transfer of the output

2, Make the machine absorb the extra heat into itself.

or both?

Agree as it is not intuitive why naphtha comes out.

[Nightinggale]

Plastic is produced at at least 75 C and it melts to naphtha at 159.9 C. Looks ok to me.

The dangerous part is that the plastic will have the same temperature as the petroleum if the petroleum is hotter than 75 C. This means you need serious cooling between your petroleum boiler and plastic production to avoid having a naphtha production. In essence your input petroleum should be max 150 C, possibly lower considering the building itself heats up.

[bobucles]

8 minutes ago, Nightinggale said:

This means you need serious cooling between your petroleum boiler and plastic production

The oil refinery has a petroleum output of 75C, so it's no problem for standard machines. Custom petrol crackers have to be much more careful though.

[Nightinggale]

Just now, bobucles said:

The oil refinery has a petroleum output of 75C, so it's no problem for standard machines. Custom petrol crackers have to be much more careful though.

Except for the fact that the oil refinery too has started to use input temperatures. This means 200 C crude oil can melt your plastic. Depending on your game, this may or may not be a problem.

[Radam]

Main influence on the temperature of the plastic is petroleum, here im cooling petroleum down to sub 150, lower plastic presses are near 100. All steel ofc. 

[Nightinggale]

I tried doing some math on plastic production. The following is based on spreadsheet fun and not ingame testing.

It could pay off to use 150 C petroleum rather than cooling it to 75 C. The cooling power needed to cool petroleum 1 C will allow cooling plastic 1.53 C. This is mainly because only 60% of the mass of the petroleum makes it to the plastic. There are also CO2 and steam outputs.

Outputting 150 C is hot enough to run steam turbines directly from the room. This will grant power and cooling the steam to water at the same time. You will however need 240 polymer presses to fully supply a steam turbine. However there is plenty of heat generated from the buildings themselves, meaning you get enough DTUs to produce 31.5 W for each building. 6 polymer presses (screenshot in previous post) will provide precisely 200 W from heat and steam combined if the input petroleum is 150 C. Granted it will require 1440 W to operate the presses. The power is a byproduct from plastic production. It's not a standalone goal.