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نتیجه جستجو - رد پای انرژی

تعداد مقالات یافته شده: 2
ردیف عنوان نوع
1 Double accounting in energy footprint and related assessments: How common is it and what are the consequences?
حسابداری دوگانه در ارزیابی انرژی و ارزیابی های مرتبط: چقدر رایج است و پیامدهای آن چیست؟-2021
The number of input-output assessments focused on energy has grown considerably in the last years. Many of these assessments combine data from multi-regional input-output (MRIO) databases with energy extensions that completely or partially depict the different stages through which energy products are supplied or used in the economy.
The improper use of some energy extensions can lead to double accounting of some energy flows, but the frequency with which this happens and the potential impact on the results are unknown. Based on a literature review, we estimate that around a quarter of the MRIO-based energy assessments reviewed incurred into double accounting. Using the EXIOBASE MRIO database, we also analyse the effects of double accounting in the absolute values and rankings of different countries’ and products’ energy footprints.
Building on the insights provided by our analysis, we offer a set of key recommendations to MRIO users to avoid the double accounting problem in the future. Likewise, we conclude that the harmonisation of the energy data across MRIO databases led by experts could simplify the choices of the data users until the provision of official energy extensions by statistical offices becomes a widespread practice.
keywords: تجزیه و تحلیل ورودی خروجی | مایه | رد پای انرژی | پسوند انرژی | حسابداری دوگانه | استفاده از انرژی | Input-output analysis | MRIO | Energy footprint | Energy extensions | Double accounting | Energy use
مقاله انگلیسی
2 Discrepancy originated from intensity vector in embodied energy accounting
اختلاف ناشی از بردار شدت در حسابداری انرژی تجسم شده است-2021
Global climate change has made human pursuit of sustainable development goals more urgent and specific, with increasing studies focused on environmental embodiment or footprint issues. As a key link in embodied energy accounting, energy intensity vector has received little attention although its variants can lead to huge discrep- ancies in interpreting results and the corresponding policy implications. This work performs a comparative study to inform the choice of energy intensity vector in input-output modelling. We construct 4 energy intensity vectors varying from methodology and data source, and compare their performances in terms of sectoral and regional responsibility, energy embodied in international trade both in an original and uniform framework. It is concluded that the choice of energy intensity is a process of determining system boundary, and trade-off should be made between detailed actual energy flow and implication about energy-economy nexus. Energy sectors dominate the generation of intensity vector, processing of exogenous energy data, especially the part from household direct use and transformation efficiency loss may cause a huge accounting deviation. Although different vectors may give varying sectoral embodied energy, the discrepancy in regional total, in particular, consumption-based accounting is much less. Our discussion can be further applied to other embodied resource accounting or environmental extension.
keywords: گسترش انرژی | انرژی تجسم یافته | ورودی-خروجی توسعه یافته محیطی | ردپای انرژی | چند منطقه ای | چین | Energy extension | Embodied energy | Environmentally extended input-output | Energy footprint | Multi-regional | China
مقاله انگلیسی
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