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Chapter 4 – Measurement units and conversion factors

Chapter 4 – Measurement units and conversion factors. Odd Andersen Energy Statistics Section. Introduction. Review of main changes Questions to the Oslo Group. Recent history (1). A first draft was discussed at the 3 rd OG meeting. The conclusions:

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Chapter 4 – Measurement units and conversion factors

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  1. Chapter 4 – Measurement units and conversion factors Odd Andersen Energy Statistics Section

  2. Introduction Review of main changes Questions to the Oslo Group

  3. Recent history (1) A first draft was discussed at the 3rd OG meeting. The conclusions: • No measurement units recommended for data collection but for dissemination; • ‘yes’ to recommend the use of SI • discussed the use of Net vs. Gross calorific values • to move some text to the annex • to consult with FAO on tables related to biomass

  4. Recent history (2) A revised draft discussed at the 1st Virtual meeting. Among the conclusions: • refer to ‘default’ instead of ‘standard’ calorific values • update default calorific values. Possible use of IPCC values • include a section on how to calculate average calorific values • introduce the concept of standard cubic metre for gasses 2nd Virtual meeting conclusion: • Recommend the use of net calorific values

  5. Main changes (1) • “default calorific value” replace “standard calorific value” • a proper subsection on how to calculate average calorific values • more background on the International System of Units • Improved text on the explanation of density and specific gravity • Tidied up discussion of energy units (e.g. all energy units now discussed in the same subsection)

  6. Main changes (2) • Cleared up discussion of the ‘calorie’ • International steam table (IT) calorie vs. gram calorie • ‘calories’ in IRES are referring to IT calories unless otherwise specified • joule equivalents explicitly given for all the other units

  7. Questions to the Oslo Group The Oslo Group is invited to: • Review the changes incorporated in the text. For example: • Section on the calculation of average calorific values • Conversion factors referring to IT calories • Advise on the use of IPCC values for default calorific values • If so, should values be provided for products not covered in IPCC if available? • Review the unit recommended for dissemination • Provide any additional comments to the chapter

  8. Thank you!

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