Cogeneration project

[moimart1]

Hello,
I am on a project to develop my vegetable oil ,
I have a diesel engine (with a boch pump) that could run 100% on oil.
I would like to transform it into a cogenerator, that is to say recover the heat from the engine and produce electricity thanks to a generator.
This is the rub, I'm looking for the generator, so if you could tell me where to find a generator and at what price?
It would be to power the house or more, I have an old meter

Thank you in advance for your answers

[Christophe]

Well to choose a generator you must know the engine first. Generally we choose the generator BEFORE the engine.

Leroy Somer is a famous brand but their stuff is not cheap.

[moimart1]

Well to choose a generator you must know the engine first. Generally we choose the generator BEFORE the engine.

I had no choice, the engine was given to me, recycled in cogenerator seems to me a good idea.
By the way the engine is a 1300 cc (if I remember correctly)

Otherwise what will happen when I inject current into my home network? I admit that I don't visualize the thing too much

[Christophe]

A car engine then?

Will have to hack well to regulate ... I have a few docs above a guy who wanted to use the XUD to make the cogé particular. I will put it online tomorrow ...

The problem is that car engines are NOT made for continuous charging ...

[moimart1]

Yes, that’s a car engine,
I already put all of them on a fixed station with the gearbox
When you say regulate it is to turn the output at 3000 tr (if it is a generator at 3000 tr), Precisely I also ask myself the question, what would you do in my place?

PS: I'm on a project with lots of questions, that's why I'm calling you

[I Citro]

When I had my first diesel visa, I asked the mechanic who maintained my father's DS the question of over-speed and he pressed the accelerator hard, smiling ...
... Then he said to me: "no risk, the bosch pump incorporates a centrifugal regulator which prevents overspeeding".

I never dismantled an injection pump (not needed).
But if he was right (he was a DS hydraulics ace and at 60, he was still taking all Citroën mechanical training sessions) ... so if he was right, I think we could consider " reset "the centrifugal governor to 3000 rpm.

Otherwise you can also regulate using an actuator controlled by the TDC sensor, but this requires some knowledge of electronics ...

[Flytox]

Hello moimart1

On this post, you have a similar problem:

https://www.econologie.com/forums/huiles-gra ... t5695.html

What are your energy needs, why exactly?

A+

[jonule]

hi, you can use a 220 or 380 asyncrhone type engine to run it with your oil engine at 10% + of its speed where it works as an engine, and you have a cheap generator if you can recover this kind engine, you have 1500 rpm, 600, 1000 ...

but why make 220 V?
because there yes you must hold the fixed speed with a regulation, counting that the engine in winter with oil has a hard time having a stable speed at cold start, you can also mount a two-tank diesel start kit and automate it it is done well!

the alternator is synchronous you just have to start, on the other hand you have to go up to + 2000 rpm for it to produce well, there you recover the heat too; it is a project that I had well matured and that I must realize one of these 4 'with a renault scenic pump lucas which was to end in scrap.

you have an alternator on your car which recharges the battery, you can put several in parallel, make your low voltage network (12V lighting, laptop, fridge etc. for camping caravans) or put a 12> 220 transformer to connect it to the circuit breaker ;-)

[minguinhirigue]

For the connection on the circuit breaker, there are no tricks which make it possible to sell all the electricity produced more expensive than that which one buys.

I know that he is considering this for the wood cogé, what about the oil cogé, and who is mounting the new circuit breaker, an EDF specialist I suppose?

Anyone have answers?

[jonule]

well to connect to the network, I think you just have to connect in // with an asynchronous motor, it stalls on it I think?
I don't know but there is the info available on this site and mine; but since there is a frequency, the phase shift must be zero, right?

but hey, what for to sell your electricity to EDF?

overproduction? what interest ...

as much just produce what we need, the rest give it to our neighbors, or heat water, or what do I still know? ...

at the output of transformer 12> 220 you put a 16A type circuit breaker with 2.5mm² wires you respect a line of sockets.

afterwards I believe that the commercial "law" does not want us to use the EDF switchboard, it will therefore be necessary to put these circuit breakers far away ... anyway the transformers (inverters) are also protected by a 12V fuse ;-)