A solar power system includes a preheating device for heating first heat transfer fluid and second heat transfer fluid in separate tubes. The initial rise time, initial fall time, second rise time, second fall time and final oscillation time are digitized into bits to form at least part of a voice ID. The first stream after emanating from the delivery device and the second stream are combined to form a third stream, such that the dew point of the vapor of the liquid precursor compound in the third stream is lower than the temperature of the plumbing that transports the vapor to a CVD reactor or a plurality of CVD reactors. The remote server, which is in communication with one or more media playback systems, may use the system identifier to recognize the correct media playback system and provide the mobile device with configuration information of the media playback system.