Because Solar Rotational Molding uses concentrated solar thermal energy, not solar electricity, it converts a very high percentage of available solar energy to useful heat. SRM achieves 75% typical efficiency, vs solar electric’s 15-20% efficiency. This efficiency, combined with LightManufacturing’s heat management, positioning, and process control software allow mirror arrays as small as 30 m2 to generate sufficient heat to mold objects 1x1xm.
A key difference between SRM and traditional rotational molding is that SRM heats the mold target by radiative heating (efficient, directly heats the metal) vs convective heating (gas burner heats air, which inefficiently heats the metal).
35 heliostat SRM systems routinely mold 2000L water tanks.
Solar Rotational Molding is convered by several US an international patents, and is available as complete working systems (not kits or DIY solutions).