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Theoretical and experimental study on solar air-conditioning system with phase-change cold storage.

[In Chinese. / En chinois.]

Author(s) : WANG X. L., ZHAI X. Q., WANG T., et al.

Type of article: Article

Summary

A phase change material (PCM) is prepared for cold storage application of solar air-conditioning systems. On the basis of the self-developed PCM, the mathematical model of a spherical capsule storage hall is built to analyze the variation and influencing factors of the temperature distribution, cold storage capacity and cold storage rate during the charging and discharging process. Experiments on the charging and discharging characteristics of the storage hall are conducted in certain working conditions. The results show that the phase transition of the storage ball completes in 170 min. The charging duration can be reduced by decreasing the chilled water temperature, sphere diameter and thickness of the sphere wall, and increasing the thermal conductivity of the sphere wall. In a steady state condition, the charging and discharging capacity are 17.30kJ and 16. 46kJ, respectively. In a non-steady state condition, the phase transition completes in 165min with a charging capacity of 16. 34kJ.

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Pages: 34-40

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