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Life cycle assessment of high oleic natural ester‐based insulating oil for carbon footprint reduction in sustainable transformer

持続可能な変圧器における炭素フットプリント削減のための高オレイン酸天然エステル系絶縁油のライフサイクルアセスメント (AI 翻訳)

Banti Sidhiwala, TCSM Gupta, Meka Srinivasarao, Anand Tiwari

Environmental Progress & Sustainable Energy📚 査読済 / ジャーナル2026-08-06#エネルギー転換経営インパクト: コスト削減対象セクター: power
DOI: 10.1002/ep.70628
原典: https://doi.org/10.1002/ep.70628

🤖 gxceed AI 要約

日本語

本研究は、変圧器用絶縁油として高オレイン酸天然エステル(HONE)を評価し、鉱油と比較してCO2排出を約27%削減できることをLCAで示した。HONEは熱安定性が高く、変圧器の小型化と高負荷運転を可能にし、材料・資源の節約にも寄与する。産業的に実現可能な持続可能な電力インフラへの貢献が期待される。

English

This study evaluates high oleic natural ester (HONE) insulating oil for transformers, showing via LCA a ~27% CO2 reduction over 30 years compared to mineral oil. HONE's superior thermal stability enables smaller transformers and higher loading, contributing to material conservation and sustainable grid infrastructure.

Unofficial AI-generated summary based on the public title and abstract. Not an official translation.

📝 gxceed 編集解説 — Why this matters

日本のGX文脈において

日本の電力インフラは老朽化が進み、変圧器の更新需要が高まっている。HONE絶縁油の採用は、SSBJやカーボンニュートラル目標に対応する電力会社や機器メーカーにとって、製品の環境性能向上とCO2排出削減の具体的な手段となる。また、資源節約によるコスト削減も期待できる。

In the global GX context

This study provides empirical evidence for a low-carbon alternative in transformer insulation, aligning with global efforts to decarbonize power infrastructure. It offers a practical solution for utilities and manufacturers to reduce Scope 1 and 3 emissions, supporting TCFD/ISSB disclosure and transition finance criteria.

👥 読者別の含意

🔬研究者:Provides LCA data and thermal performance evidence for natural ester oils, useful for further research on sustainable transformer design.

🏢実務担当者:Offers a viable alternative to mineral oil for transformer manufacturers and utilities to reduce carbon footprint and improve efficiency.

🏛政策担当者:Highlights a technology that can contribute to grid decarbonization and resource efficiency, potentially informing standards and incentives.

📄 Abstract(原文)

Abstract Improving energy efficiency and reducing greenhouse gas (GHG) emissions are essential for the transition to low‐carbon power systems and sustainable grid infrastructure. Mineral oil‐based insulating oil has a higher lifecycle carbon footprint due to petroleum extraction and refining. Natural ester fluids, derived from plant sources, offer lower CO 2 emissions, are biodegradable, and are less toxic. They also improve fire safety with a higher flash point. This study presents a life cycle assessment (LCA) of High Oleic Natural Ester (HONE)‐based insulating oil as a sustainable alternative for transformer applications. The thermal performance of HONE was evaluated through accelerated thermal aging experiments using both standard Kraft paper and Thermally Upgraded Kraft (TUK) paper insulation systems, benchmarked against mineral oil and conventional natural ester. Results demonstrate that HONE significantly slows cellulose degradation, enabling higher thermal class operation and increased loading without additional loss of life. HONE‐filled transformers can operate at hotspot temperatures up to 137°C, allowing up to 27% higher loading than mineral oil–filled units. This enhanced thermal capacity enables the engineering design of smaller, more compact transformers operating at higher load ratings—a direct pathway to material and resource conservation. From an LCA perspective, the transition to HONE‐based insulating oil in a sustainably designed transformer is estimated to reduce CO 2 emissions by approximately 27% compared to a peak‐rated transformer using mineral oil over a 30 years’ service life. These findings demonstrate a practical, industrially viable engineering solution at the intersection of sustainable energy infrastructure and chemical engineering.

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