Low Temperature Geothermal Heat Recovery in Japan

ElectraTherm, an industry leader in low temperature heat to power generation, recently finished the commissioning of a Power+ Generator at a geothermal site in Beppu, Japan. This marks the second ElectraTherm low temperature geothermal heat recovery system in Japan. The system runs off the geothermal heat from an onsen where the local community has enjoyed bathing at this natural resource for centuries. The baseload renewable power that is generated is sold back to utility at an attractive feed-in-tariff rate. Additionally, the ORC system reduces the return water temperature, cooling the hot spring water that would otherwise be too hot for the onsen. This reduces the cooling costs thus further increasing revenue.

There is a great potential for low temperature geothermal heat recovery applications across Japan and we look forward to each unit commissioned there as we work on progressing the market further. Japan offer a feed-in-tariff for geothermal at 40 Yen/kW, which is about $0.33 USD. This makes geothermal applications in Japan very attractive. This site utilizes heat at 116°C with a flow rate of 45.4 m3/hr to generate 65 kWe. Unlike other renewable sources, geothermal heat is baseload, providing a continuous flow of hot water and therefore power generation capabilities 24/7.

“The US Department of Energy sponsored a program in 2012-2013 for ElectraTherm to develop a ‘micro-geothermal’ power plant that could tolerate remote, unmanned operation and also be able to handle the challenges presented by varying geothermal resources. This is the first commercial step in Japan to showcase that investment.”
– John Fox, CEO of ElectraTherm

ElectraTherm’s low temperature heat recovery solutions utilize Organic Rankine Cycle (ORC) technology to convert heat sources as low as 70°C into clean electricity (up to 125 kWe). The lowest heat requirements in the industry with best-in-class turndown ratios make ElectraTherm’s systems well suited for transient operation. Simple water and grid connections with a modular, scalable, and portable design make deployment fast and easy. A remote monitoring system also makes autonomous operation easier than ever thanks to the units’ ability to automatically load-follow and shutdown.

 

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關於 ElectraTherm

BITZER Group 的 ElectraTherm 利用有機朗肯循環及專有技術將低溫熱能轉換為清潔電力，提供世界級的廢熱回收解決方案。ElectraTherm 簡單有效的解決方案可產生乾淨電力、提高效率、降低能源成本並減少廢氣排放，且無需額外消耗燃料。ElectraTherm 已向 13 個國家運送了 100 多台 ORC 裝置，運行時間超過 2,000,000 小時，是小型廢熱回收領域的全球領導者。

BITZER是全球最大的獨立製冷壓縮機製造商，擁有近3,500名全球員工，年均銷售額接近10億美元，ElectraTherm的工程技術優勢與BITZER的支持價值相結合，使ElectraTherm團隊能夠繼續開發行業領先的ORC技術，這對企業和地球都有好處。

ElectraTherm 的 電源+發電機 是一種熱轉電解決方案，可將廢熱轉換為清潔的電力和可用的熱能。該 主動冷卻器 可作為淨零冷卻發電解決方案，使用相同的 ORC 製程在發電的同時提供自供電冷卻。ElectraTherm 的這兩種解決方案均可減少排放和能源成本，同時提供基荷電力/冷卻供給。利用廢熱不僅有利可圖，而且非常實用。讓企業在實現可持續發展目標的同時，從更多的循環經濟中獲益。