Abstract
A new hybrid system for the energy cascade utilization has been proposed, integrating the hybrid ventilations, the active PV cooling, the radiative cooling together with the PCMs’ storages. A mathematical modelling together with systematic energy performance evaluation criteria has been presented to disclose the heat transfer mechanism of the hybrid system involved with different energy forms, diversified energy conversions and thermal energy storages. Multivariable parametrical analysis has been conducted and technical solutions were thereafter proposed in terms of maximizing the energy performance with the robust design and operating parameters. From our results, the interior radiant cooling system results in a stable indoor temperature with considerable energy saving potentials. The new hybrid system shows an overwhelming energy performance over the traditional system. Moreover, the polynominal fitting method is more accurate and robust than the traditional linear fitting method in terms of acquiring critical knowledge about the design and operating parameters. Research results for different scenarios with different geometrical and operational parameters have been presented to demonstrate and verify the effectiveness of the proposed technique.
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