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.
Before considering automation options, ensure that your home is designed to make the best use of solar energy and natural ventilation for passive heating and cooling (see Passive solar heating; Passive cooling). Use thermostats or temperature sensors in different rooms to control heating and cooling. Appropriately placed, they, along with timers to control heating/cooling appliances, can significantly reduce energy use, even if automated systems are not used. Home automation systems can be designed to save energy.