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    Please use this identifier to cite or link to this item: http://ir.lib.ksu.edu.tw/handle/987654321/3285


    Title: PCM 儲能作用機制與應用於高效率太陽能熱生電之研究
    A study on the mechanisms of store up energy and the applications to the solar heat power for PCM
    Authors: 周煥銘
    郭又中
    黃俊偉
    蘇偉堯
    藍古彥
    Keywords: PCM
    儲能
    太陽能
    鑽石膜
    Energy storage
    Phase Change Material
    Solar energy
    Diamond film
    Date: 2008-10-30
    Issue Date: 2009-08-14 00:03:59 (UTC+8)
    Abstract: 太陽能為世界上最直接且重要的能量來源,亦為不破壞地球環境的再生能源。化石燃料的使用已造成污染、酸雨及全球溫室效應等現象。因此,太陽能的轉化使用不但可改善人類的生活品質,亦可改善地球的生存環境。而熱能之存儲對於以自然界之太陽輻射為能量來源的太陽能應用而言,具有舉足輕重的地位。在各種儲能之技術中,潛熱式存儲技術由於具有提供高能量密度及在PCM(相變化材料)之相轉換的固定溫度點工作之能力,而被公認為最有發展潛力。目前最普及的太陽能電池為矽半導體所製。矽太陽能電池的光電效率並不高,只有10-15%,大部份的光能並無法轉變成電能。並且,矽晶太陽能板在使用十年後,其光電的能量效率通常會降低至只剩一半。然而,以上的問題均可以鑽石膜太陽能電池來解決。使用「無晶鑽石」膜吸收陽光時,由於放電更為容易,不僅熱電效率會大為增高至約50%,放電的溫度也可大幅降低。作者估算使用熔點在300-500℃範圍之PCM 即可達成預定目標。因此,本計畫先以儲能材料之開發為主,並帶領研究生與大學步專題研究,將其所開發之儲能材料封裝後應用於“點焊機的冷卻系統”與 “節能材料應用於貨櫃屋”。成果顯示儲能材料可有效延長點焊的連續工作時間,以及降底貨櫃屋室內的溫差並減少冷氣的使用時間。下一階段兩將尋找高溫的儲能材料與相關之熱電材料,測試不同熱電材之性能,並將其搭配儲能材應用於民生用途,達到節能省碳的目的。The solar energy is most direct energy for theworld and the important energy origin, also is therenewable energy which does not destroy the Earth’senvironment. Fossil fuel's use has created phenomenasuch as pollution, acid rain and whole worldgreenhouse effect. Therefore, not only the solar energytransformed use may improve humanity's life quality,may also improve Earth's living environment. Butstorage of the heat energy regarding originates takethe nature solar radiation as the energy the solarenergy application says, has the pivotal status.Technology in each kind of stored energy, latent heattype storage technology, because has provides thehigh energy density and (changes ability which of thefixed temperature work in PCM material) transforms,but is recognized to most have the developmentpotential. At present the most popular solar cell makesfrom silicon the semiconductor. Silicon base solarcell's photovoltaic efficiency is not high, only then10-15%, the major part energy of light and is unableto transform to the electrical energy. And, siliconcrystal solar energy board uses ten years later, itselectro-optic's energy efficiency will usually reduce toonly remains half. However, the above question maythe diamond membrane solar cell solve. When use“non-crystal diamond” membrane absorption sunlight,because discharges is easier, not only thethermoelectricity efficiency for the markup toapproximately 50%, the electric discharge temperaturemight also reduce largely greatly. The author estimates the use melting point then to achieve thepredetermined target PCM in 300-500℃ scope.Therefore, this plan first developments the PCM,designs the sealing pads, and leads the graduatestudents working with undergraduate students for twospecial cases, the “spot welder's cooling system” andthe “Energy saving materials applied for the cabinet”.The achievement demonstrated that the stored energymaterial may effectively extend the continuousworking time for the spot welding, as well as decreasethe cabinet indoor temperature difference and reducesair conditioning's period of revolution. In the nextstage, we will seek for the of high temperaturethermoelectricity of PCM, and performance the testsof different thermoelectricity materials, and applies itsmatching stored energy material in the livelihood ofthe people use, achieves the energy conservationprovince carbon the goal.
    Appears in Collections:[機械工程系所] 研究計畫

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