Retrofit workflow consist in a comparison of the cost-benefits for 3 different levels of retrofitting using the Insel monthly energy balance, co2 and cost workflows as a base to calculate the CO2 Energy and Cost values for each level.
- R0 Business as usual: current status of the building, with its skin, but renewing the energy systems once its lifetime is finished (with the same performance as the original).
- R1 1st Scenario with improved walls, windows, roof, and basement to current legislation.
- R2 2nd Scenario HVAC systems optimization + PV: an update on HVAC systems to an aerothermal heat pump coupled with baseboard heaters for peak loads, with a combined seasonal COP of 2.79, coupled with the use of the available roof space for PV, in case the shaded area is less than 30% of the total available roof area. The panels are at a slope of 35ยบ.
- R3 3rd Scenario Combining R1 and R2
Retrofit workflow