Tech Explore
Summary
The race is on to reuse waste as energy in the most effective way possible. Combined heat and power is an old idea for saving fuel with a new imperative to slash emissions. Innovative furnaces based on biofuel systems will generate heat and power from waste materials with near-complete efficiency and very low emissions.
The old mantra of waste not, want not, goes for energy as well as food. The less energy we waste, the lower will be our carbon emissions.
It may come as a surprise to learn that around half of total energy is wasted in conventional ways of producing heat and electricity from fossil fuels. But there is another way to generate both electric power and heat in what is called "combined heat and power" (CHP), or cogeneration. Quite apart from using fossil fuels, it opens the door to bring more bioenergy from waste material into the energy mix. This kind of material is often overlooked as a resource but it has significant potential.
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