Calorific Values

[Alycidon]

Could anyone please post a link to the calorific value of Oak compared to Hornbeam.

 

Thanks

 

A

[Woodworks]

Cant give calorific values but can give you the probable weight per m3 of the two from the HMSO handbook of hardwoods.

I thought most hardwoods around 4 kWh per dry  kg

 

European oak goes from 670 kg/m3 to 720 kg/m3 at 12% moisture content

 

Hornbeams average weight is 750 kg/m3 at 12%

[Stere]

Odd can't find it anywhere though I thought i'd seen it in some table before.

 

East hop hornbeam btu in USA.

 

 

Combustion of Wood - Heat Values

WWW.ENGINEERINGTOOLBOX.COM

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Firewood and combustion of wood heat values - for species like Pine, Elm, Hickory and more

 

Alot of places just say its the highest  kcal off all native euro hardwoods.....

[The avantgardener]

27 minutes ago, Stere said:

Odd can't find it anywhere though I thought i'd seen it in some table before.

 

East hop hornbeam btu in USA.

 

 

Combustion of Wood - Heat Values

WWW.ENGINEERINGTOOLBOX.COM

---

Firewood and combustion of wood heat values - for species like Pine, Elm, Hickory and more

 

Alot of places just say its the highest  kcal off all native euro hardwoods.....

Holly is higher.

I have a chart in a book but I am working away so can’t post it till next week.

Edited November 27, 2019 by The avantgardener

[neiln]

Isn't Apple higher?  It's denser I thought and the bit I had seemed to burn like coal!

[Stubby]

Hickory is up there .

[The avantgardener]

28 minutes ago, Stubby said:

Hickory is up there .

But not European.

Holly, Black Locust then Hornbeam if I remember the chart right.

No Yew, Fruit Wood or Hawthorn on this chart though, I would think any of these last three would be right up there.

[openspaceman]

5 hours ago, Woodworks said:

I thought most hardwoods around 4 kWh per dry  kg

The figure we used was 18.6 MJ per oven dry kg  which is 18.6/3.6=5.17kWh. Of course you never burn oven dry wood so if it's at 20% mc wwb then you only have 0.8kg of oven dry and you have to subtract the heat carried away in 0.2kg of steam.

 

In practice there is more variation between different parts of the tree than between most hardwood species, bark having a high ash content for instance.

 

Softwoods tend to be about 5% higher because they contain more phenol like compounds

 

I couldn't find hornbeam in the phyllis database, if you do look into the woods there you will see there is a wide range of values given  even for the same species.

 

https://phyllis.nl/Browse/Standard/ECN-Phyllis#hornbeam

 

[neiln]

here are a few others...they all differ a bit though

 

Density of Various Wood Species

WWW.ENGINEERINGTOOLBOX.COM

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Density of various wood species - apple, ash, cedar, elm and more

Apple | The Wood Database - Lumber Identification (Hardwood)

WWW.WOOD-DATABASE.COM

 

 

[Alycidon]

There was a link posted to an FC website a few years ago but the FC page no longer exists,  hence my mail.

 

A