Biomass to Steam?
- Thread starter Kiraaa
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When at max temperature the boiler is much more efficient.
When the temperature isn't near max the biogas engine is much more efficient.
Even a 1x1 boiler would be much more efficient then a biogass engine.
But only if you have enough biomass to make it worth the long heat up time
I'd reccomend LP boilers unless you have tons of the stuff
So it really boils down to how much biomass you have
Pun intended
When the temperature isn't near max the biogas engine is much more efficient.
Even a 1x1 boiler would be much more efficient then a biogass engine.
But only if you have enough biomass to make it worth the long heat up time
I'd reccomend LP boilers unless you have tons of the stuff
So it really boils down to how much biomass you have
Pun intended
Need at least the 2x2 boilers or above to be more efficient.
3.333 buckets biomass in biogas engines = 166.5k MJ
3.333 buckets biomass in a still = 1 bucket biofuel = burned in a 1x1 boiler = 162k MJ
2x2 - 3x3 scales from 177k - 290k per bucket of biofuel.
To run any steam boiler though you need to plan to store a large stockpile for startup and run a consistent fuel supply to keep it always on.
Wops, it seems i've based my statement on old math.
The biogass engine is indeed more efficient then an 1x1 boiler.
Though is worth noting that an combustion engine can produce 200k MJ from the same amount of fuel, rivaling even bigger boilers.
So i guess the gains of a boiler is limited at best unless you actually need its full power all the time.
The biogass engine is indeed more efficient then an 1x1 boiler.
Though is worth noting that an combustion engine can produce 200k MJ from the same amount of fuel, rivaling even bigger boilers.
So i guess the gains of a boiler is limited at best unless you actually need its full power all the time.
True, you have to move up to the 3x3 boiler to outpace the biofuel combustion engines. The efficiency of the final 3 boilers (18 = 206k, 27 = 241k, 36 = 290k).
What you want to do with it can also affect what you use greatly. A boiler is going to burn up the bio fuel in 1.5-2 minutes, but give you enough steam to out 72 - 144 MJ/t. You don't have a lot of flexibility there to scale down how much fuel you use.
With combustion engines you can scale in 5 MJ/t increments and each bucket will last about 33 minutes in each engine. To match outputs you are looking at needing about the same amount of fuel production with the larger boilers winning by more and more as you move up in size. If you need to sustain over 72 Mj/t you should use a boiler. Anything less or if you can store production between peak uses then few long running combustion engines are probably the easier/better solution.
You forget that Biofuel: Biomass is 3:10 ratio through a still, or 1:4 in a refinery. So it takes roughly 3 buckets of biomass to make one bucket of biofuel
This gives biogas generators quite a step up when you compare it to combustion or steam.
Therefore, for 10 buckets of Biomass:
In Biogas engines, this produces 500kMJ (10 buckets of 5 MJ/t for 10k ticks)
Converted to Biofuel, this would be 3 buckets of Biofuel
In a Combustion Engine: 600KMj (3 buckets of 40kMJ at 5 MJ/t)
In a 36H Boiler: 872,727 MJ (6060 ticks at 144 MJ/t)
In a 27H Boiler: 724,527 MJ (6708.59 ticks at 108 MJ/t)
[3 buckets of 32000 heat = total heat of 96kHeat
Base Fuel Usage Per Tick (base) = (6.4 - 36 * 0.08) / (8) * 36 = 15.84 Heat/tic consumed
96kH/15.84 = 6060.6 ticks
144MJ/t * 6060t = 872,727 MJ]
This makes a 36H boiler roughly 58% more fuel efficient than Biogas engines.
If you use a Refinery rather than a Still, the Combustion Engine produces exactly as much as a Biogas Engine from an equal amount of Biofuel.
Yup. And don't forget that turning biomass into biofuel also costs quite a bit of power.