Energy efficiency measures - Residential - Hot water - Apartment building
Template assignment
Base case
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.
For more information, view the demo available in the RETScreen 4 - Overview - Energy Efficiency - Voice & slides (26.3 MB).
Template assignment
Base case
- 40 unit apartment building, full occupancy uses 10,000 L/day hot water at 60 °C
- Water heated by oil in central heating system boiler at 65% seasonal efficiency
- Hot water is available 24 hours per day
- Replace system oil-fired boiler with new natural gas boiler at 80% seasonal efficiency
- Estimated hot water use reduction of 35%
- Temperature setback of 5 °C on water heater
- Heat recovery from hot water system estimated at 20%
- Boiler replacement incremental cost: $40,000
- Costs for hot water system improvements: $15,000
- Annual O&M savings due to boiler replacement: $1,000
- Annual O&M savings due other improvements: $3,000
- Increased heat recovery
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.
For more information, view the demo available in the RETScreen 4 - Overview - Energy Efficiency - Voice & slides (26.3 MB).
