Metso and Fortum Heat develop district heating optimization solution
Oct 24, 2013 (MarketLine via COMTEX) --
Metso Corporation, a supplier of technology and services, and Fortum Heat and Power Oy, which generates and distributes electricity, have developed a district heating network optimization solution.
Fortum's Suomenoja CHP plant in Espoo is the first power plant in Finland to optimize the dynamics of its district heating network using multivariable model predictive control. This development work builds on the optimization work carried out at the Fortum Suomenoja plant during 2012. Commissioning of the new control is planned for 2014.
The district heating network in the Espoo, Kauniainen and Kirkkonummi areas is a large and complex network, consisting of the production of district heat and cooling, a delivery network, pumping stations and thousands of end users. Until now, optimal operating conditions in the district heating network have been maintained manually, and operators have had to run the network with more heat than necessary.
"With the new automatic district heat delivery control system, it is possible to efficiently control the pressure and temperature of the district heating network in different parts of the network. Accurate control improves heat delivery efficiency by decreasing heat losses in the network, and it also enables us to maintain optimal operation conditions during fast changes in electricity and heat consumption. Both improvements reduce fuel consumption and CO2 emissions, making CHP production an even more environmentally friendly form of heating," says Timo Aaltonen, Production Director, Fortum Heat and Power Oy.
"The new advanced optimization solution will provide district heat producers with both economic and environmental benefits through better network control. Metso has developed a performance solution that is based on customer needs and enables customers to better cope with their challenges now and in the future," says Sami Pitkanen, vice president, EMEA Services, Automation, Metso.
Located in Espoo, the Suomenoja power plant produces heat for the inhabitants of Espoo, Kauniainen, and Kirkkonummi, and electricity for the national grid. The power plant produces approximately 1,800 gigawatt-hours of electricity and 2,200 gigawatt-hours of district heat per year.
The solution is built on multivariable model predictive control, which is capable of simultaneously controlling several network variables, predicting primary variables and handling control constraints. At the Suomenoja plant, the optimization package will be integrated into the existing Metso DNA automation system, but it can be integrated into any automation system used at a power plant.
"Better control of temperature and pressure fluctuations at the heat plant minimizes heat stress to district heat piping, and thus is one tool to avoid severe disturbances," points out Juha-Pekka Jalkanen, Director, Plant Performance Solutions, Automation, Metso. "Better control of the pressure difference throughout the network also removes the need to produce any additional heat, resulting in higher energy efficiency."
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