Tips & Warnings. 1  Use an epoxy resin spray on cured pieces to cover indents or other imperfections. 2  You can also buff out imperfections with plastic polish and a buffing stick. 3  If air bubbles form in the mold, blow gently on them to pop them. 4  Wear gloves and work in a well-ventilated room.f it does show an indentation, leave to cure for an additional 1 to 2 days. Turn the mold upside down and lightly tap the back until the the resin piece emerges. Spread the resin pieces out on a sheet of wax paper and leave them to finish curing for an additional 12 to 24 hours before buffing or mounting.
1.0 Passive Solar Design Introduction. Solar energy is a radiant heat source that causes natural processes upon which all life depends. Some of the natural processes can be managed through building design in a manner that helps heat and cool the building. The basic natural processes that are used in passive solar energy are the thermal energy flows associated with radiation, conduction, and natural convection.
| Photo courtesy of Jim Schmid Photography, NREL. Active solar heating systems use solar energy to heat a fluid -- either liquid or air -- and then transfer the solar heat directly to the interior space or to a storage system for later use.If the solar system cannot provide adequate space heating, an auxiliary or back-up system provides the additional heat.eating your home with an active solar energy system can significantly reduce your fuel bills in the winter. A solar heating system will also reduce the amount of air pollution and greenhouse gases that result from your use of fossil fuels for heating or generating the electricity.