Among the solutions for the achievement of the environmental sustainability in the energy sector, district heating with cogeneration is increasingly being used to meet the demand for thermal energy in urban areas. In this context, the city of Turin and its metropolitan area are in a leading position, having one of the largest networks in Europe. This study aims to evaluate the environmental consequences of the expansion of the district heating network in the urban area of Turin, in terms of impacts on air pollution, both at a global and local scale. The present document reports the preliminary results for the local analysis of NOx dispersion. The extension work is considered to involve a living volume of about 20 million m3, providing for the removal of the centrlized heat generators currently in operation. Emissions on a local scale are evaluated by calculating the ground level concentration of the nitrogen oxides (NOx), using the dispersion model CALPUFF. Meteorological data input to the dispersion model are processed and formatted starting from surface measurements and wind fields provided by Piedmont’s Environmental Protection Agency (Arpa Piemonte). The time resolution is hourly. The forecasting scenario is created from one part by simulating the energy production of the main cogeneration plants in response to the predictable heat demand; from the other part, by calculating the amount and the dispersion of pollutants removed through the elimination of the centralized residential heaters. The results are represented by means of hourly iso-concentration maps, and reveal a substantial future reduction in the pollutant load of NOx with respect to the current situation. Consideration is then provided on the future possible steps for lowering the uncertainty on the simulation scenarios. This study provides important information on the effects on air quality of a modification of the energy configuration, both in the Turin area and globally. The proposed approach is effective in providing environmental information at different levels of interest and represents a basis for any subsequent technical and economic in-depths.

Environmental survey on the potential extension of the district heating network in the urban area of Turin, Italy / Ravina, Marco; Genon, Giuseppe. - (2016). (Intervento presentato al convegno SIDISA 2016 XI International Symposium on Sanitary and Environmental Engineering tenutosi a Roma nel 19-23 June 2016).

Environmental survey on the potential extension of the district heating network in the urban area of Turin, Italy

marco ravina;giuseppe genon
2016

Abstract

Among the solutions for the achievement of the environmental sustainability in the energy sector, district heating with cogeneration is increasingly being used to meet the demand for thermal energy in urban areas. In this context, the city of Turin and its metropolitan area are in a leading position, having one of the largest networks in Europe. This study aims to evaluate the environmental consequences of the expansion of the district heating network in the urban area of Turin, in terms of impacts on air pollution, both at a global and local scale. The present document reports the preliminary results for the local analysis of NOx dispersion. The extension work is considered to involve a living volume of about 20 million m3, providing for the removal of the centrlized heat generators currently in operation. Emissions on a local scale are evaluated by calculating the ground level concentration of the nitrogen oxides (NOx), using the dispersion model CALPUFF. Meteorological data input to the dispersion model are processed and formatted starting from surface measurements and wind fields provided by Piedmont’s Environmental Protection Agency (Arpa Piemonte). The time resolution is hourly. The forecasting scenario is created from one part by simulating the energy production of the main cogeneration plants in response to the predictable heat demand; from the other part, by calculating the amount and the dispersion of pollutants removed through the elimination of the centralized residential heaters. The results are represented by means of hourly iso-concentration maps, and reveal a substantial future reduction in the pollutant load of NOx with respect to the current situation. Consideration is then provided on the future possible steps for lowering the uncertainty on the simulation scenarios. This study provides important information on the effects on air quality of a modification of the energy configuration, both in the Turin area and globally. The proposed approach is effective in providing environmental information at different levels of interest and represents a basis for any subsequent technical and economic in-depths.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2839005