Abstract
District heating technologies should be efficient, effective and environmentally friendly. The majority of the communal heating systems in Poland produce district hot water in coal-fired boilers. A large number of them are considerably worn out, low-efficient in the summer time and will not comply with forthcoming regulations. One of the possible solution for such plants is repowering with new CHP systems or new boilers fuelled with fuels alternative to coal. Optimisation analysis of the target configuration of municipal heat generating plant is analysed in the paper. The work concerns repowering the existing conventional heat generating plant according to eight different scenarios of the plant configuration meeting technical and environmental requirements forecasted for the year of 2035. The maximum demand for heat of the system supplied by the plant is 185 MW. Taking into account different technical configurations on one side, and different energy and fuel prices on the other side, the comparative cost-benefits analysis of the assumed scenarios has been made. The basic economical index NPV (net present value) has been derived for each analysed scenario and the results have been compared and discussed. It was also claimed that the scenario with CHP based on ICE engines is optimal.
Highlights
Energy and climate strategy of the European Union (EU) bases on three urgently important actions: improving energy efficiency of the processes, applying renewable resources in energy generation and cutting down carbon dioxide (CO2) emissions
Many countries have adopted energy policies to achieve such goals as increasing share of renewable resources in final energy generation and applying more efficient technologies based on cogeneration of heat and power (CHP) or trigeneration (CCHP)
Centralized generation and distribution of heat via efficient district heating (DH) systems plays an important role in increasing efficiency of energy systems as a whole and seems to be one of a key components in achieving strategic EU goals
Summary
Energy and climate strategy of the European Union (EU) bases on three urgently important actions: improving energy efficiency of the processes, applying renewable resources in energy generation and cutting down carbon dioxide (CO2) emissions. Many countries have adopted energy policies to achieve such goals as increasing share of renewable resources in final energy generation and applying more efficient technologies based on cogeneration of heat and power (CHP) or trigeneration (CCHP). Previous and current actions taken to move the energy sector towards environmental friendly and economical efficient shape has focused on both electricity and heat. Improving the district heating systems has become a tendency in Europe since at least 20 years. The expected combination of district heating and cooling (DHC) systems can help with applying aforementioned solutions [7]. DHC systems are already found economically feasible, as justified in [8]
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