| 摘要 |
<p>A typical heat transfer building panel suitable for use in building and room construction comprising walls defining an enclosure containing a two-phase heat transfer material at such pressure that it may occupy both phases under conditions of temperature differential between opposing evaporator and condenser sections at bottom and top of VPHE panel respectively whereby thermal energy is transferred in one direction only through the panel. Distribution of a suitable liquid phase change material is achieved using a relatively thin liquid reservoir means so that the evaporator section is full of liquid and 100 % wet all the times, or alternatively, the evaporator is wetted using a single or multiple wick system. An inner VPHE supporting structure is constructed to provide surface areas for efficient heat transfer and sufficient strength to maintain its shape under pressure and/or vacuum. The panel whether working under vacuum or positive pressure with respect to atmospheric pressure is generally known as a 'Bi-phase Operated Internal Gas Accumulator Panel'. When the panel operates at a lower than atmospheric pressure it functions as a Vacuum Panel Heat Exchanger (VPHE). One or more evaporator sections may be provided on a common surface in a common VPHE sealed enclosure. The open space of the VPHE has a common condenser surface with one or more means to direct condensate back to one or more of the evaporator fluid reservoirs. The panel functions as a thermo-syphon and all working fluids and fluid/panel construction material compatibilities commonly known and proven for thermo-syphons and/or heat pipes are suitable for application in this invention.</p> |
