Investigating cost implications for upgrades
Aim |
Investigate cost implications for upgrades by uding data table forms. |
Learning |
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. |