Page - (000198) - in Evaluating Climate Change Action for Sustainable Development

Toassess theavoidedemissionsof thePSHit isnecessary toassesswhatwould have been the additionalGHGemissions to reach the same indoor temperature in non PSH. For that, an OLS regressionmodel is developed to assess the relation between the indoor temperature and the GHG emission considering a similar outdoor temperature between non PSH and PSH. For the purpose of this study a simplifiedmodel is developed linking theGHGemission and the outdoor temper- ature to the indoor temperature (Fig. 10.5). BasedonthemodeldevelopedtheavoidedemissionfromthePSHtechnologyif the nonPSHhouseholdwere reaching the same indoor temperature aswell as the total climate changemitigation impact are calculated for thewholewinter season andpresented in theTable 10.5. The difference between the emission reduction and the avoided emission is significant. This is explained by the fact that PSH indoor temperaturewas signif- icantly higher than non PSH despite the lower energy consumption. In that case, accounting toavoidedemissions led toan impact110%higher thanaccounting for actual emission reductiononly. Another option for calculating the avoided emission is to take the WHO recommendedminimum indoor temperature as theminimumservice level instead Fig. 10.4 Comparisonof theweekly indoor temperature betweenPSHandnon-PSH Table 10.4 GHGemissionper typeof house and sampling in tCO2e NonPSH PSH Emission reduction 1.414 1.049 0.366 182 Y.Franc¸ois andM.Gavald~ao