Energy conservative air conditioning system using silver nano-based PCM thermal storage for modern buildings
Energy conservative air conditioning system using silver nano-based PCM thermal storage for modern buildings
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DOI：
10.1016/j.enbuild.2013.09.052
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发表时间：
2014-02
影响因子：
6.7
通讯作者：
R. Parameshwaran;S. Kalaiselvam
中科院分区：
文献类型：
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作者：
R. Parameshwaran;S. Kalaiselvam
本研究的目的是将银纳米粒子嵌入潜热蓄能系统中，提高冷水变风量空调系统的热工性能和能效。对需求控制通风与节能器循环通风相结合的潜热蓄能空调系统进行了全年建筑空调应用的实验研究。嵌入银纳米颗粒的相变材料使其在充放电循环中表现出更好的热传递机制。实验结果表明，与常规空调系统相比，该空调系统全年运行的峰均节能潜力为36-58%，日平均节能潜力为24-51%。与基本相似的变风量空调系统相比，该空调系统的峰值节能潜力为7.5-18.6%，日平均节能潜力为7.9-17.8%。此外，测试结果还推断，银纳米粒子嵌入潜热蓄能系统与通风技术相结合所产生的综合效应增强了系统的整体热性能。总而言之，组合空调系统在不牺牲能源效率的情况下，将有利于实现良好的热舒适性、可接受的室内空气质量和建筑物的能量再分配需求。
This work aims at improving the thermal performance and energy efficiency of chilled water based variable air volume air conditioning system integrated with the silver nanoparticles embedded latent thermal energy storage system. The latent thermal energy storage air conditioning system incorporated with the demand controlled ventilation and the economizer cycle ventilation schemes were experimentally investigated for the year-round building air conditioning application. Phase change material embedded with silver nanoparticles enabled it to exhibit improved heat transfer mechanisms in charging and discharging cycles. Experimental results suggest that the proposed air conditioning system achieved an on-peak and per day average energy savings potential of 36–58% and 24–51%, respectively, for year round operation while compared to the conventional air conditioning system. Similarly, while compared with a basically similar variable air volume air conditioning system, the proposed air conditioning system yielded 7.5–18.6% and 7.9–17.8% of on-peak and per day average energy conservative potential, respectively. Furthermore, test results infer that the combined effects produced by the silver nanoparticles embedded latent thermal energy storage system with the ventilation techniques augmented the overall thermal performance of the system. In total, the combined air conditioning system would be beneficial in terms of accomplishing good thermal comfort, acceptable indoor air quality and energy redistribution needs in buildings without sacrificing energy efficiency.