[honway]

You wrote:
That 15% simply means you are putting in 100 Btus and getting 85 back as fuel.

From the article:
That means for every 100 Btus in the feedstock, we use only 15 Btus to run the process

The process uses 15 Btus to produce 100 Btus. Keep in mind that 15 Btus comes from discarded plastic, used tires, waste from a turkey processing plant, etc.

Considering waste that would end up in landfills is being turned into energy, the process is actually better than getting something from nothing, imo.

[US_MilitaryRules]

just to keep track of this info.

[boris]

"The process uses 15 Btus to produce 100 Btus."

With math like that I am not surprised this approach appeals to you. My original statement is correct: 100 BTUs in (feedstock); 85 BTUs out (useful energy).

Period.

--Boris