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基于相变材料和天然沸石进行热管理的光伏-热系统的热经济学分析

Exergoeconomic analysis of photovoltaic thermal systems based on phase change materials and natural zeolites for thermal management.

作者信息

Kandilli Canan, Uzel Mert

机构信息

Usak University, Uşak, Turkey.

出版信息

J Therm Anal Calorim. 2021;145(3):1373-1384. doi: 10.1007/s10973-021-10574-z. Epub 2021 Feb 7.

DOI:10.1007/s10973-021-10574-z
PMID:33584130
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7868080/
Abstract

Conventional photovoltaic thermal (PVT) systems provide unstable thermal energy, which changes throughout the day. In PVT systems, phase change materials (PCMs) and heat storage materials could be used to make thermal energy more stable and provide longer-term thermal energy. In the present study, exergoeconomic analysis of PVT systems integrated with natural zeolites has been firstly carried out, and the results were compared with the results of PVT systems integrated with PCM and conventional one. PVT systems integrated with paraffin and stearic acid, common PCMs and conventional PVT systems were analyzed by specific exergy costing method, systems were compared exergoeconomically and suggestions were made to improve the economic performance of PVT systems. As a result of the analyzes conducted with 297 data obtained experimentally, the average energy efficiencies were calculated as 33%, 40%, 37% and 32% for paraffin, natural zeolite, stearic acid and conventional PVT system, respectively. Besides, average exergy efficiencies were 24%, 24%, 22% and 22% for paraffin, zeolite, stearic acid and conventional PVT system, respectively. The average entropy generation of the PVT based paraffin; natural zeolite, stearic acid and conventional one were found as 2.11, 2.29, 2.18 and 2.07 W K, respectively. According to the exergoeconomic analysis, specific exergy flow cost values were found as 0.206, 0.176, 0.204 and 0.206 € kWh for the PVTs based on paraffin, natural zeolite, stearic acid and the conventional PVT. It was concluded that the natural zeolite-based PVT system was found as the best system exergoeconomically.

摘要

传统的光伏-热（PVT）系统提供的热能不稳定，全天都会变化。在PVT系统中，相变材料（PCM）和蓄热材料可用于使热能更稳定，并提供更长期的热能。在本研究中，首先对集成天然沸石的PVT系统进行了火用经济分析，并将结果与集成PCM的PVT系统和传统PVT系统的结果进行了比较。采用特定火用成本法对集成石蜡和硬脂酸的PVT系统、常见PCM的PVT系统和传统PVT系统进行了分析，对各系统进行了火用经济比较，并提出了提高PVT系统经济性能的建议。根据通过实验获得的297个数据进行分析的结果，石蜡、天然沸石、硬脂酸和传统PVT系统的平均能量效率分别计算为33%、40%、37%和32%。此外，石蜡、沸石、硬脂酸和传统PVT系统的平均火用效率分别为24%、24%、22%和22%。基于PVT的石蜡、天然沸石、硬脂酸和传统系统的平均熵产分别为2.11、2.29、2.18和2.07 W/K。根据火用经济分析，基于石蜡、天然沸石、硬脂酸的PVT和传统PVT的特定火用流成本值分别为0.206、0.176、0.204和0.206 €/kWh。得出的结论是，基于天然沸石的PVT系统在火用经济方面是最佳系统。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bdb/7868080/e60f5d2e080b/10973_2021_10574_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bdb/7868080/a0a5a6f00fe8/10973_2021_10574_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bdb/7868080/f16b5434e76d/10973_2021_10574_Fig2_HTML.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bdb/7868080/448bc8def7a0/10973_2021_10574_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bdb/7868080/b8d3aa1bccff/10973_2021_10574_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bdb/7868080/46b584abf829/10973_2021_10574_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bdb/7868080/cc08da797657/10973_2021_10574_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bdb/7868080/e60f5d2e080b/10973_2021_10574_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bdb/7868080/a0a5a6f00fe8/10973_2021_10574_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bdb/7868080/f16b5434e76d/10973_2021_10574_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bdb/7868080/3f0a6b58cf16/10973_2021_10574_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bdb/7868080/448bc8def7a0/10973_2021_10574_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bdb/7868080/b8d3aa1bccff/10973_2021_10574_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bdb/7868080/46b584abf829/10973_2021_10574_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bdb/7868080/cc08da797657/10973_2021_10574_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bdb/7868080/e60f5d2e080b/10973_2021_10574_Fig8_HTML.jpg

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