| 摘要 |
PURPOSE:To transfer and circulate light and heat energies through a full heat collecting multi-layer tube while the energies are absorbed by the tube by a method wherein the composite tube is used to collect heat from a heat source such as a solar heat source, a magma-internal heat source or a heat source from bio-recycle resources such as firewood, charcoal, coal and petroleum gas. CONSTITUTION:The inner tube 1 of the multi-layer tube is formed of a tube 3 provided with a number of holes through which a liquid heat collecting medium including gasses like Flon or the like passes, the intermediate tube 5 is formed of a heat collecting finned tube and the outer tube 6 is windproof and attached with a light and heat transmissive ceramic glass tube 7a or a transparent synthetic resin case tube 7b. The inner tube and the intermediate tube are sealed. Further, a sensor terminal 4a, thermo- operative lead wires 4c and a sensor plug are screwed into the composite tube while lead wires 4d are fastened with the same sensor plug. In addition, temperature difference controlling changeover valves of the same configuration are attached to an air supply hole 2a in the inner tube 1 and a hot and warm water discharge port 2b in the intermediate tube 5, respectively. Then the supply and discharge of air into and from the tube are automatically controlled by making use of the kinetic energy pressure of heat circulating through the tube. |
