Duluth May Update Downtown’s Central Heating
The plant, which has operated for 81 years, draws frigid lake water to be heated by a coal-fired furnace and then pipes steam to downtown businesses. The plant is inspired by a similar system in St. Paul and another one like it in Sweden.
Duluth’s heating system was privately built but sold to the city in 1979. It currently serves about 40 percent of the central business district and waterfront park area. Expansion would be difficult because it would be difficu.t top push steam any farther from the boiler.
Conversion to a hot water system would allow service to customers more distant from the boiler. Also, circulated hot water would allow for heart recovery after it has passed through the systems’ buildings. Currently, leftover steam condenses back to water and is recirculated through the city’s sewer system.
Ever-Green Energy has been hired to manage the system. The company operates North America’s largest district hot water system in St. Paul. The company is eyeing sawdust as a fuel source to supplement coal. Eight to 16 truckloads a day from area sawmills could supply up 25 percent of the plant’s fuel by 2015. Woodchips could be added with some additional equipment.
Photo credit: chefranden’s Flickr photostream
Why bring buildings online? What information can operations teams glean from real-time data that they can’t just get from the monthly data provided by utility companies? Click to learn more.
- Existing Building Technologies Combine for Increased Savings
- Combined Heat and Power
- The Future of Operational Risk Management: The Oil & Gas and Chemicals Approach
- 2014 Environmental Leader Product and Project Awards
- Improve Your Company's Environment and Energy Performance
- Unlocking the Value of Energy & Operational Data
- Energy Financing Report
- Let's Do The Math for DR
- Smart Companies Utilize Integrated Energy Solutions
- 2013-2014 Winter Polar Vortex
- Cut Costs and Improve Facility Operations with Energy Data
- Energy Procurement Strategies for Winter 2014 and 2015
- Energy Efficiency Requires Engineering Efficiency
- Integrated Building Optimization: A Crucial Convergence of Demand-side and Supply-Side Energy Management Strategies
- Driving Productivity and Profit with Industrial Energy Management