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Post by coaxjack on Nov 17, 2016 23:25:22 GMT
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Post by dragonkid11 on Nov 17, 2016 23:39:18 GMT
But can it be used as coolant?  |
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Post by Pttg on Nov 17, 2016 23:44:37 GMT
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Post by dragonkid11 on Nov 18, 2016 1:26:42 GMT
Chocolate resistojet Truly, mankind has a bright and tasty future. |
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Post by n2maniac on Nov 18, 2016 6:23:24 GMT
Sorry if I am derailing the thread, but now that I started looking for high-melting point nuclear reactor fuels: Neptunium oxides? Wikipedia suggests a melting point of 3070 K. Edit to add: How are you adding new materials? I might try myself / I want to see if coffee can be used as a component anywhere. My search previously was in vein. Ultimately, UO2 is a pretty resilient ceramic with respect to heat. I think to get much higher we would have to move to a liquid or gaseous fissile material, somehow maintaining control of criticality (maybe actively cooled control rods, selectable neutron reflectors, or injected neutron poisons?). The dev was against adding this in (justifiably due to lack of demonstrated prototypes outside of maybe corium). That being said, from UO2's ingame limit of ~3200K, tantalum is only ~3300K. The generators won't get much better. The nuclear thermal rockets will, though solid materials become a much bigger necessity. Maybe a carbon or tungsten heat exchanger with liquid nuclear fuels inside? Or just encased in those materials? |
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Post by dragonkid11 on Nov 18, 2016 8:16:15 GMT
The current limit of NTR is more on the melting point of the nuclear fuel, so a nuclear fuel with higher melting point would probably work just plain better.
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Post by madscientist on Nov 18, 2016 18:15:46 GMT
The current limit of NTR is more on the melting point of the nuclear fuel, so a nuclear fuel with higher melting point would probably work just plain better. Gee, if only we had a materials scientist with a speciality in metals and ceramics used in nuclear applications. I'll just leave this here:
Material UTaC Cermet
Elements U-235 Ta C
ElementCount 1 2 3
EnthalpyOfFormation_kJ__mol -96.1
Density_kg__m3 14076
YieldStrength_MPa 237.0
UltimateTensileStrength_MPa 248.0
YoungsModulus_GPa 448.0
ShearModulus_GPa 179.8
MeltingPoint_K 3641
SpecificHeat_J__kg_K 126.83
ThermalConductivity_W__m_K 20.0
ThermalExpansion__K 8.53e-6
Resistivity_Ohm_m 2.5e-8
RefractiveIndex Tantalum
RoughnessCoefficient 0.3
A uranium tantalum carbide cermet, in a sintered tungsten cladding (not shown as we don't have to worry about cladding) is a proposed material for NTRs. The material properties haven't been published so there's a lot of guesswork and interpolation here. I had this working in version 1.04 of CoDE, but it broke on a recent update, and now it just crashes my game. If someone gets it in, let me know. |
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Post by wafflestoo on Nov 18, 2016 20:28:58 GMT
Chocolate resistojet Truly, mankind has a bright and tasty future. "If you want to view paradise, Simply look around and view it, Anything you want to, do it, Want to change the world? There's nothing to it..." |
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Post by someusername6 on Nov 19, 2016 5:52:43 GMT
So... why do I get 100% cavity transparency if I try to use chocolate as cavity coolant composition on a laser module?
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Post by wafflestoo on Nov 19, 2016 16:22:36 GMT
So... why do I get 100% cavity transparency if I try to use chocolate as cavity coolant composition on a laser module? "We are the music makers, and we are the dreamers of dreams." (I can't help it! I love that movie!) |
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Post by someusername6 on Nov 19, 2016 17:07:47 GMT
So... why do I get 100% cavity transparency if I try to use chocolate as cavity coolant composition on a laser module? "We are the music makers, and we are the dreamers of dreams." (I can't help it! I love that movie!) Aphex Twin is pretty good BGM for design, too. |
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Post by Pttg on Nov 19, 2016 21:32:50 GMT
The current limit of NTR is more on the melting point of the nuclear fuel, so a nuclear fuel with higher melting point would probably work just plain better. Gee, if only we had a materials scientist with a speciality in metals and ceramics used in nuclear applications. I'll just leave this here:
Material UTaC Cermet
Elements U-235 Ta C
ElementCount 1 2 3
EnthalpyOfFormation_kJ__mol -96.1
Density_kg__m3 14076
YieldStrength_MPa 237.0
UltimateTensileStrength_MPa 248.0
YoungsModulus_GPa 448.0
ShearModulus_GPa 179.8
MeltingPoint_K 3641
SpecificHeat_J__kg_K 126.83
ThermalConductivity_W__m_K 20.0
ThermalExpansion__K 8.53e-6
Resistivity_Ohm_m 2.5e-8
RefractiveIndex Tantalum
RoughnessCoefficient 0.3
A uranium tantalum carbide cermet, in a sintered tungsten cladding (not shown as we don't have to worry about cladding) is a proposed material for NTRs. The material properties haven't been published so there's a lot of guesswork and interpolation here. I had this working in version 1.04 of CoDE, but it broke on a recent update, and now it just crashes my game. If someone gets it in, let me know. As far as I can tell, adding anything other than oxygen to the elements entry of a reactor core causes a crash. I'm not sure why. Here's my working "Cermet": Material UTaC Cermet
Elements U-235
ElementCount 1
Density_kg__m3 14076
YieldStrength_MPa 237.0
UltimateTensileStrength_MPa 248.0
YoungsModulus_GPa 448.0
ShearModulus_GPa 179.8
MeltingPoint_K 3641
SpecificHeat_J__kg_K 126.83
ThermalConductivity_W__m_K 20.0
ThermalExpansion__K 8.53e-6
EnthalpyOfFormation_kJ__mol -96.1
BandGap_eV 1.4
RelativePermittivity 1.00040
ThermoelectricSensitivity_V__K 750e-6
RefractiveIndex Uranium Oxide
RoughnessCoefficient .3 |
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Post by someusername6 on Nov 20, 2016 18:25:10 GMT
More modding questions:
How do you find out the list of properties to be included on a new material? And how do you make them show up as valid materials for lasers (arc lamp gas / envelope, gain medium, non-linear optics)?
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Post by someusername6 on Jan 10, 2017 4:09:27 GMT
Reviving this thread -- it probably should be moved to Suggestions.
But also: I want to model rocket candy in game, and it goes along with having chocolate as a material.
Does anyone have the activation energy, autoignition temperature, and characteristic length handy for any sugar + potassium nitrate?
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Post by David367th on Jan 10, 2017 4:20:26 GMT
Reviving this thread -- it probably should be moved to Suggestions. But also: I want to model rocket candy in game, and it goes along with having chocolate as a material. Does anyone have the activation energy, autoignition temperature, and characteristic length handy for any sugar + potassium nitrate? Seriously though, this is a great idea and I'm sad no one mentioned it earlier... |
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