Temperature difference power generation

Japanese: 温度差発電 - おんどさはつでん
Temperature difference power generation
A method of generating electricity by converting thermal energy into electricity. It uses a property called the Seebeck effect or thermal conduction effect, in which electricity is generated when a temperature difference is applied to the junction of two different metals. Various hot heat sources can be used to create a temperature difference, from artificial sources emitted from various devices and vehicles to natural sources such as geothermal and solar heat. On the other hand, air, groundwater, seawater, snow, etc. are expected to be used as cold heat sources. It is expected to be a next-generation power generation method that effectively utilizes artificial exhaust heat that can damage the environment and utilizes natural hot and cold sources, and various experiments are being conducted in various places. Beppu City, Oita Prefecture, which has the largest number of hot spring sources in Japan, began a demonstration experiment of a "hot spring charging station" that uses temperature difference power generation to charge smartphones and other devices at a tourist facility in the city in September 2019. Electricity is generated by exposing the power generation unit to about 100 degree hot water from the source and outside air.

(2019-10-3)

Source: Asahi Shimbun Publications About Chiekura Mini Information

Japanese:
熱エネルギーを電力に変える発電方法の一つ。二つの異なる金属の両方の接点に温度差を与えると電力が生まれるという、ゼーベック効果または熱伝導効果と呼ばれる性質を利用する。温度差を与えるものとして利用できる温熱源は各種の機器や乗り物から排出される人工的なものから、地熱や太陽熱など自然界のものまで様々なものが考えられる。一方の冷熱源には、空気や地下水、海水、雪などが利用できると期待されている。環境にダメージを与えうる人工的な排熱を有効活用したり、自然由来の温熱・冷熱源を利用したりする次世代の発電方法として期待されており、各地で様々な実験が行われている。国内最多の温泉源泉を有する大分県別府市では19年9月、温度差発電を利用してスマートフォンなどを充電できる「おんせん充電ステーション」の実証実験を市内の観光施設で開始した。源泉から得られる100度程度の湯と外気を発電ユニットに触れさせて発電する。

(2019-10-3)

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