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Table 14 Annual use of primary energy for heating and DHW in Scenarios Present State, Retrofit 1 and Retrofit 2, kWh

From: Planned energy-efficient retrofitting of a residential building in Italy

Scenario Ap. 1a Ap. 1b Ap. 2a Ap. 2b Ap. 3a Ap. 3b Building
Present State 15,071 25,494 12,127 10,532 14,715 13,315 91,254
Retrofit 1 8707 14,001 6883 5515 7444 6154 48,703
Retrofit 2 6495 10,115 4729 4521 5269 5174 36,303