place of gas to conduct heat away from the slats the latter technique may be used for example in microwave to electric energy conversion systems when incorporated into a building a converter acts as an exterior layer and provides some exterior protection in this context the converter may become part of the building either added to an existing structure or incorporated into a new structure and is termed a u201c powerskin u201d a converter that is intended for installation as a powerskin may be advertised sold and or packaged with installation instructions with one or more sensors and or with one or more effectors suitable for use in an integrated building system such converter that is accompanied by an instruction manual or by one or more system sensors effectors is intended for powerskin use and said to be an uninstalled powerskin a converter that has one or more electrical connections for sensory or effector signals to a controller thus is termed a u201c powerskin u201d by virtue of having one or more input output connections that allow use of the converter as part of a larger building energy system as a powerskin a converter may provide insulation and can control.