Heat transfer means

Claim 1

PANEL STRUCTURE FOR MODIFYING THE TRANSMISSION OF THERMAL RADIATION, COMPRISING: A WALL SUBSTANTIALLY TRANSPARENT TO THERMAL RADIATION; WALL MEANS SPACED FROM AND SUBSTANTIALLY COEXTENSIVE WITH SAID WALL, SAID WALL AND SAID WALL MEANS COOPERATING TO DEFINE A FIRST CHAMBER; A LAYER OF THERMAL RADIATION SCATTERING MATERIAL DISPOSED BETWEEN SAID WALL AND SAID WALL MEANS AND HAVING INTERCONNECTING FLUID PERVIOUS PASSAGES THEREIN; RADIANT HEAT TRANSMISSIVE FLUID DISPOSED WITHIN SAID FIRST CHAMBER, IN THE PASSAGES OF SAID PERVIOUS LAYER, AND CAPABLE OF FLOW INTO AND OUT OF THE LATTER, SAID FLUID, SAID LAYER, AND SAID TRANSPARENT WALL HAVING SUBSTANTIALLY EQUAL INDICES OF REFRACTION; MEANS DEFINING A FLUID STORAGE CHAMBER IN FLUID FLOW COMMUNICATION WITH SAID FIRST CHAMBER AND WITH SAID FLUID PASSAGES; AND MEANS RESPONSIVE TO THE PRESENCE OR ABSENCE OF THERMAL RADIATION UPON SAID PANEL STRUCTURE TO EFFECT, RESPECTIVELY, FLOW OF SAID FLUID OUT OF AND INTO PASSAGES OF SAID PERVIOUS LAYER IN SAID FIRST CHAMBER AND TO AND FROM SAID STORAGE CHAMBER, SAID SCATTERING MATERIAL IN COMBINATION WITH SAID FLUID BEING EFFECTIVE TO TRANSMIT THERMAL RADIATION THROUGH SAID PANEL STRUCTURE, AND SAID SCATTERING MATERIAL, IN THE ABSENCE OF SUBSTANTIAL QUANTITIES OF SAID FLUID IN SAID CHAMBER, BEING EFFECTIVE TO SCATTER THERMAL RADIATION AND PREVENTING TRANSMISSION OF SUCH RADIATION THROUGH SAID PANEL STRUCTURE.