Chapter 4

1
Chapter 4 Measurement units and conversion
factors

• Results of the second worldwide consultation

2
Chapter contents

1. Introduction (4)
2. Measurement units (36)
3. Calorific values (50)
4. Recommendations (10)

3

• A - Introduction
• Original versus common units
• B - Measurement units
• The International System of Units (SI)
• Original units (mass, volume, energy)
• includes detailed discussion on energy units
  (Joule, Calorie, Btu, toe/tce, kWh)
• Common units
• C - Calorific values
• Gross vs. net calorific values
• Default vs. specific calorific values
• Tables
• Fuelwood and other biomass
• D - Recommendations

4
Tables provided

• Default net calorific values (NCV) for
• - solid fossil fuels and derived products (Table
  1)
• - natural gas and oil (Table 2)
• - biofuels and waste (Table 3)
• Fuelwood
• - influence on moisture on NCV (Table 4)
• - volume/weight conversion table (Table 5)
• Recommended units for dissemination (Table 6)

5
Format of Table 1, 2 and 3 (calorific values for
energy products)
6
Fuelwood tables
Table 3
Table 4
7
Table 6 Recommended units for dissemination
8
Result of the WWC - summary
Q.1 Do you overall agree with the contents of
this chapter? Q.2 Do you overall agree with the
recommendations provided in this chapter?
9
WWC comments received

• 48 comments received
• From the comments we have identified
• 20 issues for which we need the opinion of the
  Expert Group and
• 11 straight-forward issues (editorial and other)
  for which the Expert Group is also invited to
  comment.

10
Discussion

• A list of issues brought up by the respondents to
  the 2nd WWC has been prepared and presented to
  the Expert Group.
• Members of the expert group are invited to
  provide their opinions on the presented issues.