节能与储能传递过程原理、技术与应用

This paper addresses the discordance between momentum, heat, and mass transfer in energy saving and storage. This discordance causes bottleneck problems in system efficiency, heat transfer, compactness, reliability, safety, and other difficulties. Three enhancing principles and technologies for energy storage and saving transfer processes based on thermal resistance regulation are proposed. First, a directional plug flow control method for one-side thermal resistance is proposed to enhance the one-side single-phase fluid transfer. This method achieves a reasonable match between thermal and flow resistance. Heat exchangers with helical baffles, internally finned tubes with longitudinal wavy fins and grille-particle composite-packed beds are developed accordingly. A local target-controlling method for two-side thermal resistance is established to enhance two-side fluid transfer. Finally, considering the difference in thermal resistance in the spanwise and flow directions, technologies for high-temperature gas-gas heat exchangers and moving bed heat exchangers are developed. To enhance the phase-change energy storage, the space-time evolution mechanism of thermal resistance in the energy storage process is revealed, and a space-time regulation method for thermal resistance is established. Ultrasonic-enhanced phase-change material cold storage technology and multitemperature phase-change material cothermoelectric technology are accordingly developed.