Apparatus to harvest atmospheric water vapor

A system for attracting, capturing and converting atmospheric water vapor into useful liquid water comprising:

• a compressor;
• a capillary tube expansion device with one end embedded in a volume of a Low Temperature Phase Change Material with a phase change temperature below the triple point temperature of water at one atmosphere (LTPCM);
• a fan and a condensing coil with one end of the condensing coil connected to a discharge port of the compressor and the other end connected to the capillary tube expansion device;
• a frost collection surface and LTPCM tank with an evaporation coil embedded in the volume of LTPCM, with one end of the evaporation coil connected to a suction port of the compressor and the other end connected to the capillary tube expansion device;
• a volume of working fluid in the coils' closed-loop;
• a temperature-sensing switch connected to the PCM volume to control the on/off state of the compressor;
• an automated open/close atmospheric inlet vent;
• a cool air outlet vent;
• an automatic frost scraping mechanism with ample free space to allow an incoming atmospheric volume to flow freely;
• a temperature-sensing switch connected to condensing coil to control the on/off state and speed of the condensing coil fan;
• a holding tank for liquid water with a dispensing mechanism;
• a scraping and air flow system on/off mechanism based on water tank volume;
• and
• a specialized layering configuration of insulation protecting collection tank area temperatures from higher system temperature or ambient temperature.