Electrical Engines

[Kelvin]

I have been having problems with electrical engines going into forced cooldown, basically I have one engine (not upgraded) drawing 6eu/t and outputting 2mj/t to a buildcraft pump. The engine keeps overheating and shutting down. Buildcraft says the pump can accept up to 10mj/t so whats the deal? Anyone else come across this?

Thanks

 

[Dravarden]

yes, also I have an electric engine, conected from a ton of solar pannels (creative mode) and it always says '' 0 mj/t'' and always overheats... but the pump DOES work.

 

[Kelvin]

Yeah its really weird as I am watching it pump the liquid but it still overheats. It just cycles from 0deg moves up to 300deg then cuts out till it is at 0deg and starts over again.

 

[Yusunoha]

just a thought I came up with... usually I just put the engine right onto the pump, so I'd do the same for an electrical engine, but try putting a wooden conductive pipe inbetween (and maybe a stone/golden conductive pipe)... does that still overheats the engine?
also, you really shouldn't use an electrical engine, or pretty much any other engine except a redstone engine for the pump, because the pump really doesn't need much, and with 4 redstone engines pumping at max you already get alot out of the pump

 

[potter]

The pump does not need as much as 2MJ/t, thus making the Electric Engine store excess energy in itself until it goes into forced cooldown.
3-4 Redstone Engines will do just fine but if you're insistent on using the Electric Engine, try to put a circuit board with -1MJ/t on it ( i think that is the copper tube ).
Or you could hook it up to additional machines with pipes, making it send excess energy elsewhere.

It could also depend on what type of pipes you are using from the pump. Try using gold waterproof pipes maybe?

 

[Kelvin]

Found out the problem. Basically the pipes are a bottleneck, even if you attach 4 gold output pipes to the pumps it still bottlenecks in the pipes. If you attach buildcraft tanks to the top of the pump it will fill it in seconds. I found this on a buildcraft wiki and it seems to hold true to the tests I did :-

Power usage and outputs
A pump uses 10 MJ per pumped block. Max filling rate is 20 buckets / sec, or 10 MJ/tick, from 2 Combustion engines running on fuel (fuel equals 5 MJ when used in 1 Combustion engine, so 2 Combustion engines will Provide 10 MJ).


Transportation of liquids
Note that a single pipe won't hold the load of a maxed out pump, nor will 4 Gold Waterproof Pipes as they all provide 4x1.6=6.4 buckets / sec, a little more than a third of the capacity needed. Therefore it is advised to place a tank directly next to the pump.

-----

As you can see a pumps is capable of pumping 20 buckets a second, if you attach an electric engine to a pump with a tank on top you will see for yourself, its pretty damn fast compared to the pipes.

The reason I am trying to do it this way is because when I have say 10 different pumps in the nether (all with world anchors) only a few of them will work at once, its ok with maybe 6 pumps but as soon as I go over that amount some of them randomly stop working. So I was going to put all of my production into one pump working fast on an electrical engine so I would not have that problem and then pump out of multiple wooden pipes to my liquid loaders. Not got time tonight but if I manage to get it going as I want it I will put some pics up.

Thanks all

 

[potter]

Might i ask why you need to pump at such speed though? Just curious.

Also, if your pumps stop working, do they intertwine with each other in the lava lake? It _could_ be that another pump drains the lava sourceblock the other pump is currently connected to. I don't really know how pumps work so i'm merely guessing here, but it seems that it needs to connect through a or several sourceblocks to grab the furthest ones, then work its way to the center.
It would be nice to know the mechanics behind it.

On another note, wouldn't a magmatic engine be more practical to use than the electric one?
It self-adjusts its power/fuel consumption when needed and you're already pumping its fuel.

 

[Kelvin]

I need to pump the liquid this quickly as I need to fill 12 liquid loaders as fast as possible, the round trip from filling to unloading takes about 30 seconds (my original station with 2 pumps for 4 carts did this ok for days on end), each loader takes 16 buckets so I need to pump about 192 buckets every 30 seconds, this gets shipped off to my factory on the overworld and fills 192 geothermal generators that goes directly to my matterfabricator.

Like I said in my previous post a scaled down version of this works fine, but if I add more stations to the mix the buildcraft engines start stopping randomly, it is not the engines interfering with each other as the stations only have 2 pumps and are very far apart (all chunkloaded individually). Some stations both pumps stop working, others only one. It all seems random.

I was using the electric engine attached to a geothermal so it ends up the same as the magmatic engine, but the power is not the problem, it is the bottleneck with the pipes, I have solved this part of the problem by attaching tanks directly to the top of the pump. I will have a look at the magmatic engines though, it should save me a geothermal generator or two, thanks.

 

[glasspelican]

What mod pack are you using?
if you have thermal expansion you could use liquducts, they move liquid twice as fast as golden pipes
You could also use a redstone energy cell to buffer the output from your engine, it will apply constant power to the pump, you can then use a buildcraft logic gate to stop the engine when the energy cell is full.

 

[ShneekeyTheLost]

Thermal Expansion Liquiduct Pipes can do even more than that, at least for now. While currently listed as a bug by the mod developer (meaning it will likely go away in the next version), you can set the liquiduct pipe to output with a wrench/crescent hammer/omnitool and apply a redstone signal (also needed for said engine) and it will draw... I think it was 240 or so.

However, as already stated, you don't want to use an electric engine on a pump, it doesn't need that much power.

 

[Harvest88]

The trick to getting more fluid out of a pump than liquiducts can do on every side is to stacks BC tanks on top of it and attaching a bunch of ducts to them. The tricky thing is to make sure they don't connect and route them to Liquid Transposors to stores the liquid into containers and then enderchest them to the overworld. Then Liquid Transposors at the plant to takes the fluid out of the containers and then pipes them into like you said geothermals with the ducts. One geothermal will needs about 20 MB per second since a bucket is depleted every 50 seconds. (Use Thermal Generators for better power per MB of lava)