Energy efficiency measures - Residential - Building envelope - Insulation / Latvia

Case study assignment

Three separate buildings in an apartment complex require retrofit insulation to reduce heat losses during the winter months.


Base case

Heating system

• Buildings are heated by diesel fuel #2
• Space heating seasonal efficiency is 80%
• Fuel cost is €0.308/L
• Set point temperature for space heating is 20 °C
• Heating changeover temperature is 15 ºC

Building envelope

• First apartment building has roof area of 2,900 m² insulated to 1.56 m²-ºC/W
• Second apartment building has below grade wall area of 8,000 m² insulated to 2.48 m²-ºC/W
• Third apartment building has below grade wall area of 5,500 m² insulated to 2.48 m²-ºC/W

Proposed case

Building envelope

• Roof insulation in first apartment is increased to 6.32 m²-ºC/W for €7,000
• Below grade walls are insulated as follows:
  • second building to 5.15 m²-ºC/W for €11,000
  • third building to 5.15 m²-ºC/W for €10,000
• Incentive of 25% on energy efficiency measures

Prepare a RETScreen study, documenting any assumptions that you are required to make, and report on the significant conclusions from this analysis.


Solution

The worked-out solution is the data file selected from within the RETScreen Project Database. The user automatically downloads the project database file while downloading the RETScreen software.


Similar project

Based on 2002 energy audits three apartment buildings in the city of Valmeira, Latvia were retrofitted with improved insulation.

Real project (119 KB)