A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
District Heating/Cogeneration Application Studies for the Minneapolis-St. Paul Area: Methods and Cost Estimates for Converting Existing Buildings to Hot-Water District Heating
This report presents the results of a study of the costs and techniques required to convert existing buildings in Minneapolis and St. Paul to use 150 exp 0 C (300 exp 0 F) hot-water district heating. The buildings and heating systems in the high-density areas in both downtown Minneapolis and St. Paul were surveyed, and a computer data base was assembled. A total of 280 buildings were surveyed, representing a peak thermal load of about 400 MW. The return-water temperature was selected for minimum cost and maximum power yield at the cogeneration plant. The cost of converting heating systems in existing buildings to district heating was determined by two separate approaches: theoretical cost studies of heating systems and engineering cost studies of heating systems in existing buildings. In the first approach, cost estimates were generated by designing conversion systems for a range of building sizes for each of the major types of heating systems. In the second approach, engineering cost studies were done for five buildings that were representative of the buildings in the study area. The heating-system conversions of the five buildings were designed for three return-water temperatures to determine the effect on conversion costs of varying the water flow rate and the difference between the supply-water temperature and return-water temperature. The conversion costs for the three return-water temperatures can be used to estimate the optimum return-water temperature. Conversion costs were determined from detailed bids submitted by a heating, ventilating, and air conditioning contractor. (ERA citation 05:016098)
District Heating/Cogeneration Application Studies for the Minneapolis-St. Paul Area: Methods and Cost Estimates for Converting Existing Buildings to Hot-Water District Heating
This report presents the results of a study of the costs and techniques required to convert existing buildings in Minneapolis and St. Paul to use 150 exp 0 C (300 exp 0 F) hot-water district heating. The buildings and heating systems in the high-density areas in both downtown Minneapolis and St. Paul were surveyed, and a computer data base was assembled. A total of 280 buildings were surveyed, representing a peak thermal load of about 400 MW. The return-water temperature was selected for minimum cost and maximum power yield at the cogeneration plant. The cost of converting heating systems in existing buildings to district heating was determined by two separate approaches: theoretical cost studies of heating systems and engineering cost studies of heating systems in existing buildings. In the first approach, cost estimates were generated by designing conversion systems for a range of building sizes for each of the major types of heating systems. In the second approach, engineering cost studies were done for five buildings that were representative of the buildings in the study area. The heating-system conversions of the five buildings were designed for three return-water temperatures to determine the effect on conversion costs of varying the water flow rate and the difference between the supply-water temperature and return-water temperature. The conversion costs for the three return-water temperatures can be used to estimate the optimum return-water temperature. Conversion costs were determined from detailed bids submitted by a heating, ventilating, and air conditioning contractor. (ERA citation 05:016098)
District Heating/Cogeneration Application Studies for the Minneapolis-St. Paul Area: Methods and Cost Estimates for Converting Existing Buildings to Hot-Water District Heating
R. E. Sundberg (author) / H. O. Nyman (author)
1979
151 pages
Report
No indication
English
Minneapolis District-Heating Options
| NTIS | 1981
District Heating and More-Efficient Buildings
| NTIS | 1981
| Engineering Index Backfile | 1946