| 摘要 |
<p>A pure-phase-trans formation and heatless (PPT&H) refrigerating process and method of installation. The system comprises a phase-transformation multistage refrigeration cycle of at least two stages. The first stage compresses vapor, the other stages all utilize the cool of lower temperature provided by the refrigeration cycle of the preceding stage to liquefy the vapor of the current stage to implement the refrigeration cycle by means of cool. A compressor and a condenser of the next stage are immersed in the liquid-state refrigerant of the next stage to have the generated heat all absorbed by the vaporizing latent heat of the next stage, so that the temperature of condensation becomes approximately the temperature of evaporation to achieve normal refrigeration and supplying cool. The evaporation temperature of the refrigerant in each refrigeration cycle rises stage by stage according the connecting sequence of the system. The intermediate-stages multiply the refrigerated cool stage by stage and the final stage supplies cool to the outside space. This system has no heat exhaustion to the outside environment and has very high refrigerating efficiency.</p> |
