Investigating cost implications for upgrades

Aim

Investigate cost implications for upgrades by uding data table forms.

Learning
Outcome

To modify the capital cost tables with situation specific data.

 

Task

Instructions

1. Establish a base case and look at two capital cost scenarios

1. From the categories list select the dwelling from the previous exercise eg, Semi-det 2sto Ex1.

2. Click ‘select base’ button to select this as the base case.

3. Add a 3m diameter wind turbine; examine the payback period.

4. Select the 0.5x Capital £ option; examine the payback period.

5. Adjust the windspeed at the site to 8m/s, examine the payback period.

6. Clear detailed input, clear base.

2. Establish a base case and adjust capital cost of wall upgrades

1. From the categories list select the dwelling from the previous group exercise eg, Semi-det 2sto Ex1 and select as the base case.

2. Upgrade the wall U value from 1.7 to 0.3 W/m2K and record the capital cost.

3. Open C:\Esru\HEM\data (data tables) (or from the location where the tables were installed).

4. Copy wall_no_cavity_upgrade.txt to wall_no_cavity_upgrade_original.txt.

5. Open wall_no_cavity_upgrade.txt.

6. Change the cost of wall upgrade 1.7 to 0.3 W/m2K to be +£100/m2; save file.

7. Refresh HEM and repeat step 2.

8. Record the new capital cost.

9. Open wall_no_cavity_upgrade.txt and return the wall upgrade cost to the original value.

10. Refresh HEM.

3. Establish a base case and adjust fuel cost (biomass)

1. From the categories list select the dwelling from the previous group exercise eg, Semi-det 2sto Ex1 and select as the base case.

2. Adjust the fuel type to be wood/bio (biomass).

3. Record the running cost (archive).

4. Open C:\Esru\HEM\data (data tables) (or from the location where the tables were installed).

5. Copy cost_table to cost_table_original.

6. Open cost_table.

7. Change the cost of biomass £_woodbio; save file.

8. Refresh and adjust the fuel type to be biomass again.

9. Record the new running cost.

10. Open cost_table, return to original value, close and refresh HEM.

 

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