雪櫃、冷氣機、水煲等等各電器不時都會散發出熱力。672Please respect copyright.ＰＥＮＡＮＡrmCs1QXvcP
如果將這些多餘的熱力轉化成為電力，便能夠更有效運用資源，不作浪費。672Please respect copyright.ＰＥＮＡＮＡDyz75Tcr4c
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（圖2）繼續深入講解之前，我們先以非常簡單的方法概括一下發電的原理。672Please respect copyright.ＰＥＮＡＮＡfLMBggZ52H
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只要電子在閉合電路單方向流動，就能促成電流，提供電力讓燈泡發光。672Please respect copyright.ＰＥＮＡＮＡd0NFe6r6Ry
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（圖3）要把熱力有效轉化為電力，我們需要一樣能夠有效傳遞電子而同時又不會傳遞熱力的物料。672Please respect copyright.ＰＥＮＡＮＡcUsJRkNBKn
672Please respect copyright.ＰＥＮＡＮＡfuZkv37iUI
有科學家最近發表文章（Ref1)，利用化學物ferricyanide ion Fe(CN)6 –4作為媒體把熱力轉化為電力。672Please respect copyright.ＰＥＮＡＮＡHrVbnPPa1K
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選用Fe(CN)6 –4的原因基於其兩種特質。672Please respect copyright.ＰＥＮＡＮＡnLipfuaRZ0
672Please respect copyright.ＰＥＮＡＮＡzaLT6tP2U0
1.它遇冷（約攝氏20度左右）的時候，再加上Guanidinium ion的輔助下便會變成固體結晶。672Please respect copyright.ＰＥＮＡＮＡiKbNFM2SVF
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2.它遇熱的時候會放出電子並成為Fe(CN)6 –3。672Please respect copyright.ＰＥＮＡＮＡXERyXXI5g7
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（圖4）以下就是利用熱力發電的精髓要點。672Please respect copyright.ＰＥＮＡＮＡxRZjpKvuWb
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1.Fe(CN)6 –4遇上外間熱力（例如電器所散發出的熱力），因而會釋發電子並成為Fe(CN)6 –3。672Please respect copyright.ＰＥＮＡＮＡ5l2Ts5m6uG
672Please respect copyright.ＰＥＮＡＮＡPbfS7q3T0z
2.電子在閉合電路走動，產生電流，讓燈泡發亮。672Please respect copyright.ＰＥＮＡＮＡfcwDuCviwJ
672Please respect copyright.ＰＥＮＡＮＡckmYb8rvmR
3.電子到達另一端的凍金屬棒（約攝氏20度）後，從第1點所得來的Fe(CN)6 –3便會接收電子，變回Fe(CN)6 –4。672Please respect copyright.ＰＥＮＡＮＡxgKU2ip1Xd
672Please respect copyright.ＰＥＮＡＮＡ40jQX36CmL
4.Fe(CN)6 –4在Guanidinium ion的輔助下變成固體結晶。672Please respect copyright.ＰＥＮＡＮＡzJmDST0wcX
固體相對上傳熱的能力比液體較弱，因而減低了熱金屬棒把熱力傳到凍金屬棒的效率，促使凍金屬棒及熱金屬棒維持著溫差。672Please respect copyright.ＰＥＮＡＮＡ9rxubeQ36P
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5.在地心吸力的影響下，固體結晶會趨往金屬棒那方。而在熱力的影響下，固體結晶變回液態Fe(CN)6 –4，重回第1點不斷循環。672Please respect copyright.ＰＥＮＡＮＡmEmLikKbUx
672Please respect copyright.ＰＥＮＡＮＡGOGhnsDU2l
綜合來說，科學家巧妙利用了Fe(CN)6 –4遇熱釋出電子的特點，以及遇冷配合Guanidinium結成固體、固體不易傳熱的特質，建造了有效傳遞電子而同時又不會有效傳遞熱力的物料。672Please respect copyright.ＰＥＮＡＮＡ2f3TjV0wJl
672Please respect copyright.ＰＥＮＡＮＡQMVNLvyV6B
（圖5）科學家在文中亦嘗試利用20個圖4的模組，在兩極維持50度的溫差下，提供電力予各用途之上。672Please respect copyright.ＰＥＮＡＮＡT40X4lqEnd
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現在需要解決的問題，就是找出收集多餘熱力的有效方法及物料，引導熱力到模組裡頭。672Please respect copyright.ＰＥＮＡＮＡNUz0dTeXC8
文章作者表示現時已積極尋找物料，相信假以時日絕有可能會在市面見到收集電器熱力發電的設備。672Please respect copyright.ＰＥＮＡＮＡuwClKciUJJ
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如果想我快啲出文的話，請入去Penana網站科普專欄–薯不揀單俾一個like以及Bookmark，這對我非常之重要。672Please respect copyright.ＰＥＮＡＮＡnB42kpk4pi
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Link: https://www.penana.com/story/66244/%E7%A7%91%E6%99%AE%E5%B0%88%E6%AC%84-%E8%96%AF%E4%B8%8D%E6%8F%80%E5%96%AE/toc672Please respect copyright.ＰＥＮＡＮＡWp26fn4rWE
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同時亦可以在Penana網站裡按「買一嚿/半嚿薯仔」，以課金的方式推動我繼續搜羅資料寫文，多謝。672Please respect copyright.ＰＥＮＡＮＡVhxnlQCuUn
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Link:672Please respect copyright.ＰＥＮＡＮＡMuONVoG65i
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio672Please respect copyright.ＰＥＮＡＮＡaxMgDah6hi
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有興趣接收科學資訊的話，歡迎follow IG: potatopigtongue。672Please respect copyright.ＰＥＮＡＮＡn1NgVRWa8Z
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Ref1:https://science.sciencemag.org/content/early/2020/09/09/science.abd6749672Please respect copyright.ＰＥＮＡＮＡ18i5fFpPuM
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