calculation of boiler efficiency

[otrebor81]

Good morning, everyone.
I need help.
I have to calculate the performance of a wood boiler.

I have this data:

- heating power wood
- water input temperature
- water output temperature
- water flow rate (liter/minute)

Help me?

Thank you.

 

[Stan9411]

you miss the “port” of input timber and the specific heat of water that however far from the saturation conditions is on average 4,18 kj/kgk

 

[Stan9411]

the useful heat will be qu = m_water*cp_water*(t_waterout - t_acquain)
available heat will be q = m_wood*pc_wood

performance is the relationship between the two.

Then it depends if the calorific power you think you have is that of the dry wood. because you know that the water that wood contains does not participate in the energy budget but only in the chemical reaction.
more than that I don't know, as the first approximation can do well what I told you.