Smokeless coal in 10kg bags

[magnetman]

Is that all? I would have ordered a shipping container full. 

[rusty69]

No need. Two lumps will last all winter. Its exceedingly good.

[davidg]

1 hour ago, rusty69 said:

Do you mean KJ/Kg?  

or even kJ/kg☺️

[IanD]

1 minute ago, davidg said:

or even kJ/kg☺️

MJ/kg (or MJ/l for liquid fuels) makes far more sense, a much smaller number and easily convertible to kWh (multiplying by 0.28) for easy comparison with electric/gas costs.

 

Useful rule of thumb -- a kilogram or a litre of solid or liquid fuel is not far off 10kWh.

[rusty69]

16 minutes ago, davidg said:

or even kJ/kg☺️

Quite possibly DavidG, or davidg.

[cuthound]

7 hours ago, rusty69 said:

No need. Two lumps will last all winter. Its exceedingly good.

 

Yes but just how big are these lumps?