Filed under: energy efficiency

Biodiesel

A cleaner-burning diesel fuel made from natural, renewable sources such as vegetable oils.

Biodiesel is meant to be used in standard diesel engines and is thus distinct from the vegetable oils used to fuel converted diesel engines. Biodiesel can be used alone, or blended with petrodiesel.


Leave a Comment November 15, 2009

R Value

A measure of thermal resistance used in the building and construction industry.

The bigger the number, the better the building insulation’s effectiveness.

Leave a Comment November 11, 2009

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