Tag Archives: manufacturing

Even Pencils will be hard to make

Preface. Most of us are unaware of how complex our society is, how things are made, how food is grown, how stuff is delivered, and the people, energy, transportation, and kinds and sources of materials in every day objects.  This … Continue reading

Posted in EROEI Energy Returned on Energy Invested, Localization, Supply Chains | Tagged , , , , | 2 Comments

Fossil-fueled industrial heat hard to impossible to replace with renewables

Preface. Cement, steel, glass, bricks, ceramics, chemicals, and much more depend on fossil-fueled high heat (up to 3200 F) to make. Except for the electric-arc furnace to recycle existing steel, there aren’t any renewable ways to make cement, other metals, … Continue reading

Posted in Alternative Energy, Manufacturing & Industrial Heat | Tagged , , , | 2 Comments

Can concentrated solar power be used to generate industrial process heat?

Preface. The bright future of solar thermal powered factories, makes some important points about using concentrated solar power to generate heat: “…A large share of energy consumed worldwide is by heat. Cooking, space heating and water heating dominate domestic energy … Continue reading

Posted in Concentrated Solar Power, Energy, Manufacturing & Industrial Heat | Tagged , , , , , , | 6 Comments

Going 100% renewable power means a lot of dirty mining

Preface. Everyone talks about oil spills, but what about the dirty mining that will have a huge polluting footprint on the earth, and potentially destroy the world’s largest sockeye salmon fishery among other side-effects? Renewables aren’t cleaner and greener than … Continue reading

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