Equation 10.1: Calculation of the Weekly Energy Consumption
Weekly Consumption kWh
ð
Þ¼
X
d¼day
X
n¼fuel
Daily Consumption kg
ð Þ n, d  NCV n
!
The outdoor temperature data collected by the thermometers and data loggers
situated outside the house has been transformed into Heating Degree Day (HDD)
and summed for each week of measurement. The HDD is a measurement designed
to reflect the demand for energy needed to heat a building. It is calculated by
counting the missing degrees to reach a comfort temperature. The comfort temperature has been determined at 18
C and the HDD18 (explain abbreviation) is
calculated as follow:
Equation 10.2: Calculation of the Weekly Heating Degree Day Value
Weekly HDD18 ¼
X
d¼day
18 À Daily Temperature d
Similarly the indoor temperature data collected by the thermometers and data
loggers are used to calculate the weekly average indoor temperature.
Based on these data first analysis of the differences in energy consumption and
HDD18 are available between PSH and non-PSH.
10.2.4 Greenhouse Gas Calculation
The GHG emissions were calculated from the energy consumption using the Gold
Standard GHG calculation methodology “Technologies and practices to displace
decentralized thermal energy consumption
7 ” and IPCC emission factors.
8 For
biomass fuels, the calculation of the fraction of non-renewable biomass (fNRB)
was based on the Gold Standard-approved methodology using FAO data.
The overall GHG reductions achieved by the project activity are then calculated
as follows:
ER ¼
X
BE À
X
PE À
X
LE
Where:
ER ¼ Emission reduction (tCO 2 e/year)
BE ¼ Baseline emissions for the non PSH (tCO 2 e/year)
7 Available on http://www.goldstandard.org/wp-content/uploads/2011/10/GS_110411_TPDDTEC_
Methodology.pdf
8 IPCC, “Energy,” in 2006 IPCC Guidelines for National Greenhouse Gas Inventories, vol. 2, 5
vols. (Intergovernmental Panel on Climate Change, 2006).
10 Integrating Avoided Emissions in Climate Change Evaluation Policies for. . .
177
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