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Reply by ArtMann

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Posted on Urban Lumber Re-use coming to TX & Woodmizer WM1000 has arrived!!

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ArtMann

1480 posts in 1592 days


#1 posted 10-22-2017 01:47 PM

My post was a prediction and therefore speculative. I don’t want to make up for your laziness by looking up all the necessary references. However, I will summarize a few facts I found in about 30 seconds from a Penn State white paper. I would assume you would find this a valid source of information.

Thermal/chemical efficiency of a steam plant 85%

Thermal/chemical efficiency of an automobile engine 25%

Thermal/chemical efficiency of a large electric motor 90%

Of course, these figures aren’t the whole story. There will be other thermal and mechanical losses from all three sources, depending on the system. Some of these are addressed in the same white paper.

It is obvious from these figures, as imprecise as they may be, that the most efficient way to run the band saw mill is using electric energy from the utility company. Of course, utility companies buy propane at a fraction of the cost of a consumer.

I suppose I don’t need to mention the place from which you should extract your head.

https://www.ems.psu.edu/~radovic/Chapter4.pdf


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