For the colorimetric measurement of a two-dimensional original, the original is photoelectrically scanned pixel by pixel in a first step by way of a color-enabled photoelectric scanning device. A control unit writes the information to a hard disc drive apparatus andor RAM to save the file management data. The array also includes electrical contacts to the memory cells including the substantially vertical structures. The support housing also has a means an aperture in its upper surface that is capable of receiving, within the support housing, a hanging member, such as a nail or screw, that is first attached to a ceiling or a wall. Flue gas removed from the combustion chamber are cooled, cleaned and heated as described herein and recirculated to the membrane chamber. The electrical controller is configured to limit a peak junction temperature of the power converter by applying at least one junction temperature derating function.