glycol alternatively the first and or second mediums may be a fluid gas or multipurpose solid liquid convection medium in the context of this description the term u201c thermoelectric module u201d is used in a broad sense of its ordinary and customary meeting which is 1 conventional thermoelectric modules such as those produced by marlow industries inc of dallas tex 2 quantum tunneling converters 3 thermionic modules 4 magneto caloric modules 5 elements utilizing one or any bi combination of thermoelectric magneto caloric quantum tunneling and thermionic effects 6 acoustic heating mechanisms 7 thermoelectric systems described is u s pat no 6 539 725 to bell 8 any other sold state heat pumping device 9 any combination array assembly and other structure of 1 through 8 above in thermal communication with a first heat exchanger 26 is the first surface 22 of the thermoelectric module 20 the first heat exchanger 26 is in turn in thermal communication with the first medium of the first circuit 12 in thermal communication with a second heat exchanger 28 is the second surface 24 of the thermoelectric module 20 this second heat exchanger 28 is likewise in thermal communication with the second medium of the second circuit 16 preferably an internal.