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頁面建立日期
2019.04.24

頁面更新日期
2019.10.21

太陽能 Solar Energy


簡介 Introduction

有些地區的日照時間長,陽光充沛,是發展太陽能的好地方。現時,太陽能主要用作加熱和發電。太陽能集熱器能直接利用太陽的熱能把水加熱,為建築物提供暖水。至於發電,目前最常用的是光伏發電,即利用太陽能電板收集陽光,把光能轉換成電能,為建築物提供電力。雖然太陽能用之不竭,但是只能在天晴時才能收集。要確保能源供應穩定,須安裝能量儲存設備,如蓄電池等,同時須裝設大量成本高昂的太陽能板。由此可見,發展太陽能不僅佔用大量土地,而且成本相當高。目前,使用太陽能供電最多的國家,包括中國、德國和美國等。

Places with long daylight duration and strong sunlight are suitable for solar energy development. At present, solar energy is mainly used for heating and power generation. Concentrated solar power systems can directly use the solar radiant to heat up the water and provide warm water to the building. As for power generation, the most common use is photovoltaic power generation, which uses solar panels to collect sunlight, convert light energy into electricity, and provide electricity to buildings. Although solar energy is inexhaustible, it can only be collected when the weather is fine. To ensure a stable energy supply, energy storage equipment, such as batteries, must be installed, and a large number of costly solar panels must be installed. Thus, the development of solar energy not only occupies a large area of land, but also expensive. Currently, countries that use the most solar power are China, Germany, and the United States.

太陽能的優缺點 

  優點 缺點
持續性
  • 可再生
  • 發電量受天氣影響
限制  
  • 日照必須充足、持久
  • 大量太陽能板佔用土地
對環境的影響
  • 發電過程不會造成污染或噪音
  • 太陽能電池生產過程會產生有毒物質
對經濟的影響
  • 運作成本便宜
  • 發電系統可以長時間操作而不會損耗
  • 發電效能較低,發電成本高
  • 興建發電廠成本較高
技術
  • 成熟
 

 

Advantages/Disadvantages of Solar Energy

  Advantages Disadvantages
Sustainability
  • Renewable
  • Power generation is affected by the weather
Limitations  
  • Must have sufficient amount and duration of sunlight
  • Solar panels occupy large area of land
Environmental influences
  • The process of power generation does not cause pollution or noise
  • Solar cells produce toxic substances during production
Economical influences
  • Low cost for operation
  • Power system can operate for long hours without any wear and tear
  • Low power generation efficiency and high cost
  • High cost for constructing power plant
Technology
  • Well developed
 

 

中文內容獲得 雅集出版社有限公司 授權使用

 

新聞及政府資訊 News&Government Information

香港特別行政區政府機電工程署. (2019). 太陽能光伏 -- 應用實例.
網站收錄了香港各地太陽能光伏的應用實例。
引文
Energysage. (2019, 2019-01-01, January 01). Solar energy: what you need to know.
This webpage introduced the basic information about solar energy, inclusing it's benefits, costs, advice on operation, and applications in the community.
引文

影視作品 Movie and TV Series

陳彩霞. (2018). 能源多面睇. 五夜講場 – 真係好科學 2018.
電力是現代都市人不可或缺的,發電所需的能源更是維持一個國家經濟的命脈。然而我們卻經常聽到我們所依賴的主要能源──化石燃料──會在未來五十年用盡的說法云云,到底這是不是事實的全部?如果是事實,水力發電、核能、太陽能、生物能源,哪一個是最好的替代選擇?今集主持將為大家逐一拆解不同能源的產能原理,以及使用上的利弊。
引文
麥志恆. (2018). 太陽的想像. 零距離科學Science with you.
雖然太陽能不會污染環境、供應又源源不絕,但現時全球的太陽能發電量只佔不到2%。為了令這種能源更加普遍,有工程師嘗試將太陽能電池板鋪在地上,而非屋頂,這方法會否成功?又有人利用太陽能上天下海、環遊世界;甚至用太陽能將沙熔化、變成玻璃製品,甚至用作建築材料。As clean and inexhaustible as solar energy is, it only represents less than 2% of global power generation. To make better use of this resource, some engineers are trying to put solar panels on the ground, instead of the roofs. Does it work? Some others try to fly to the sky and sail around the world; some even melt the sand and turn it into glass products and construction materials – all depending on just the power of the sun.
引文

學術文章 Academic Papers

李苑君 、 沈嘉聪. (2018). 深港太阳能利用对比. 城乡建设, (4), 25–30.
通過對比深圳與香港太陽能利用設施的規劃成果,以建設情況、應用技術、公眾參與度等方面為切入點,總結深港兩地太陽能利用設施規劃建設的特點,探求深圳下階段規劃發展方向、資源背景分析及太陽能資源分析。
引文
Li, D. H. et al. (2014). An analysis of potential applications of wide-scale solar energy in Hong Kong. Building Services Engineering Research & Technology, 35(5), 516–528.
引文
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