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| | | item_rec3 = [[Kit (Stirling Engine)]] | | | item_rec3 = [[Kit (Stirling Engine)]] |
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| − | {{Itembox
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| − | | name = Overall Stirling Engine Cost/Requirements [[File:Stirling Engine Front.jpg|thumb|Front]]
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| − | | createdwith = [[Electronics Printer]], [[Autolathe]]
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| − | | cost = 6 [[Iron]], 9 [[Gold]], 26 [[Copper]], 31 [[Steel]]
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| | }} | | }} |
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| | Gases with a low molecular mass make the most efficient working gases. Increasing the moles of working gas can result in a greater potential power output. However, overpressuring the unit may have... sub-optimal results. | | Gases with a low molecular mass make the most efficient working gases. Increasing the moles of working gas can result in a greater potential power output. However, overpressuring the unit may have... sub-optimal results. |
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| − | == Efficiency ==
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| − | The Stirling Engine has an efficiency curve that is dependent on three factors:
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| − | * Environment
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| − | * Working Gas
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| − | * Input to Output efficiency
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| − | The best a Stirling Engine can provide in power is 15% efficiency of the input heat, whereas a [[Kit (Gas Fuel Generator)|Gas Fuel Generator]] has a much higher efficiency ratio per Mol of fuel.
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| − | == Environment ==
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| − | The Stirling engine itself is best placed outdoors in a 13-25 Celcius environment to provide the highest efficiency. The only planets that cannot effectively use it are: Venus, Moon and Mimas
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| − | <gallery>
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| − | Stirling_temp.png|Temperature dependency
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| − | </gallery>
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| − | === Outdoors ===
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| − | * Moon (Vacuum): 0%
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| − | * [[Venus]]: 12% efficiency @ 463 Celcius
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| − | * Vulcan (Night): 91% efficiency @ 126 Celcius
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| − | * Mars: 100%
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| − | * Loulan: 100%
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| − | === Indoors ===
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| − | Keeping the Stirling engine indoors to cool it down to maximum efficiency is debatable if not impossible, since the exposed working gas canister heats the room up, thus it has to be heavily cooled. The power gained from indoor cooling is significantly less than the possible power gained with a single indoor-cooled [[Kit (Gas Fuel Generator)|Gas Fuel Generator]].
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| − | A single frame of 100kPa (330mol oxygen @ 20 celcius) will rise by 1.5 Celcius every second with 1500 Celcius gas, assuming that you are exporting from a furnace to the Stirling Engine.
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| − | == Working Gas ==
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| − | The working gas is a canister of gas that must be provided to the machine before it can be used. The gas itself is not lost, only used as a heat transfer gas.
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| − | When filling it, 60 mols of gas in the canister is needed, which is usually around 2.4MPa when it is pressurized at room temperature.
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| − | '''''If the canister's pressure ever reaches 11 MPa, the machine will instantly explode.'''''
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| − | Here are the efficiencies of several gasses:
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| − | * Pollutants: 5%
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| − | * Carbon Dioxide: 8%
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| − | * Oxygen: 12%
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| − | * Nitrogen: 12%
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| − | * Nitrous Oxide: 12%
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| − | * Hydrogen: 15% (Best)
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| | == User Comments== <!--T:3--> | | == User Comments== <!--T:3--> |
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| | Technical details<br> | | Technical details<br> |
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| − | Ideal pressure differential: 2500<br>
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| | Internal volume: 54L<br> | | Internal volume: 54L<br> |
| | Piston volume: 5L<br> | | Piston volume: 5L<br> |
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| | Radiation factor: 0.15<br> | | Radiation factor: 0.15<br> |
| | Surface area: 8.499227<br> | | Surface area: 8.499227<br> |
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| − | <br/><br/>
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| − | <h1>Vulcan</h1>
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| − | The Stirling Engine is a reasonable way to generate night time power on Vulcan when solar power is unavailable. Place it outside so it's in night time (400K) atmosphere, and capture mid-day (900 to 950K) atmosphere into a tank and run the Stirling Generator from that hot air at night, the generator can produce around 1.8 kW from the temperature difference. For the working gas, a good starting point is 70 moles of H2 in the canister. You can boost the power output to about 2.1kW by using an active vent to blow cold night air into the large grid that the Stirling Engine is in to cool it down.
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| | </translate> | | </translate> |
