Roasted Pellets (Black Pellet): the new threat?

[Ahmed]

The energy cost of coal mining is quite variable, but can be low in the case of surface mines. However, it is penalized by its transport. The manufacture of pellets, especially black pellets, seems more energy-intensive. As for combustion, it is likely that the advantage in terms of CO² either with coal, the pellet containing more carbon already bound...

[sicetaitsimple]

However, it is penalized by its transport.

I do not think so. Most often transported by sea or river, it is quite weak.
On the other hand, the 250000t/year of wood to be transported from the entire region by road to Cordemais where the pellet manufacturing plant will be located, must weigh quite heavily, without even mentioning the other nuisances caused.

[Ahmed]

This is what emerges from the literature which compares the ease and cost of transporting the main energy sources... But this does not actually avoid the transport of wood which necessarily constitutes a more dispersed resource.

[Leo Maximus]

This document is not easy to find and you have to look carefully to obtain the data to calculate the quantity of pellets necessary for the production of 1 kWh.

1 kg of pellets produced 0,3 kWh...!

In short, taking into account the losses in the electricity network, you need a third to a half ton of pellets to recharge your EV!

Yes, meh, it's not much more than coal...

Isn't that much more? That's 4 to 4 times... LESS!

The most efficient German coal/lignite power plants produce 1 kWh with 1kg of fuel. Ecocombust is 0,3 kWh!

The pellets should be used for heating, not for electricity production.

[sicetaitsimple]

This document is not easy to find and you have to look carefully to obtain the data to calculate the quantity of pellets necessary for the production of 1 kWh.

1 kg of pellets produced 0,3 kWh...!

In short, taking into account the losses in the electricity network, you need a third to a half ton of pellets to recharge your EV!

Yes, meh, it's not much more than coal...

Isn't that much more? That's 4 to 4 times... LESS!

The most efficient German coal/lignite power plants produce 1 kWh with 1kg of fuel. Ecocombust is 0,3 kWh!

The pellets should be used for heating, not for electricity production.

Ok, I messed up, but I think you did too!
This 0,3 kWh/kg of pellets makes no sense.
Likewise the 1kWh/kg for coal in the best German power stations. Fortunately it's more.

[GuyGadeboisTheBack]

Units of measurement and key figures

According to estimates from the International Energy Agency (IEA), the global average efficiency of coal was around 2 kWh/tonne (an efficiency of 083%) in 30. In Europe, this figure was approximately 2009 kWh/tonne of coal (2% efficiency). The average efficiency of supercritical coal-fired power plants exceeds 630%.

https://www.connaissancedesenergies.org ... le-charbon

The PCI of the black pellet is approximately the same as that of the classic pellet (value announced by the manufacturer of 5.3 kWh per kg, but probably a little lower). The only advantage of black pellet is that it does not absorb water, so it can be stored outdoors.

[Leo Maximus]

Here, the link to the Wikipedia page of the German coal-fired power station Neurath. This is the page in German because the page in French is worthless:

https://de.wikipedia.org/wiki/Kraftwerk_Neurath

It is stated that the consumption of coal (Kohleverbrauch) is 0,9 to 1,2 kg per kWh produced.

Where is the 40% efficiency? Or ?

We are around 11% for coal and 6% for lignite.

[Ahmed]

There is surely a big difference between the caloric capacity of a kg of coal and the kWh production that can result: this explains it.

[Christophe]

There is surely a big difference between the caloric capacity of a kg of coal and the kWh production that can result: this explains it.

Sorry ?

Yes, it’s precisely called YIELD!

[GuyGadeboisTheBack]

Where is the 40% efficiency? Or ?

The:

The lignite-fired power plant of the electricity company RWE Power in Neurath was installed in 2011 with two new 1 MW blocks. The power plant is located in the Lower Rhine lignite mining area near Grevenbroich, Germany, and is the world's largest power plant fueled by lignite (brown coal). With the addition of two new units, the plant has an efficiency of more than 100%.

https://www.power-technology.com/projec ... &cf-closed

In 2009, according to estimates from the International Energy Agency (IEA), the global average efficiency of coal-fired power plants was around 2 kWh/tonne of coal (an efficiency of just over 083% ). In Europe, this figure was around 30 kWh/tonne (2% efficiency). With supercritical power plants, this thermal efficiency reaches more than 45%.

https://www.connaissancedesenergies.org ... bon-220218