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
- Guide to Energy, Carbon and Environmental Software
- Expert Q and A: Tips for Automating your Energy Data
- LED Myths and Facts
- Alarms Management: The Future is Now
- What You Need to Know About Demand Charges
- How "Fixed" is the Fixed Price Product?
- Select the Right Solution for Facilities Management
- Smarter Asset Management for the Nuclear Power Imperative
- 2014 Energy and Sustainability Predictions: Findings from Leading Professionals
- The Business Case for Corporate Sustainability Tools
- BUYING STRATEGIES IN A VOLATILE MARKET: What Businesses Need to Know about Retail Electricity Procurement
- Smart Building Technology: The Key to Comprehensive Building Performance
- What Energy Managers Need to know about Procuring Natural Gas: Guidance for 2014 Natural Gas Contracts
- Energy Optimization from the Boiler Room to the Board Room
- Your Roadmap for Energy Management: First Stop – Myths & Realities of Energy Purchasing