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Heat is                Efficiency =      Trapped air is     Hot air is    IR is absorbed    Heating              When a so...
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Energy

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Energy

  1. 1. Heat is Efficiency = Trapped air is Hot air is IR is absorbed Heating When a solidtransferred by useful energy an insulator in less dense by particles, something makes melts it changesthe vibrations Total energy cavity wall than cold reflected by it hotter. state and itsof the foam. air so it shiny surfaces. E = mcT temp is constant.particles. Wasted Payback time. rises. Passive solar c is specific heat energy heating. capacity E = ml Conduction Insulation Changing Convection Radiation Heating up in the home state Heat Energy Energy Generation of electricity Photocells Wind power Fossil fuels Biomass

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