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Descripción
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| The aim of this project is define the technical and economical conditions of a biomass heating system that covers the global necessities of heating and sanitary hot water for a building located in Madrid. On the one hand, it is analysed geometry and technical characteristic of the block of flats, it is calculated required power, it is selected biomass boiler, it is calculated annual useful energy needed in the building, and so, it is selected biomass fuel, its annual consumption and self-supply. On the other hand, it is calculated the budget, it is analysed economic viability of the installation and it is done sensitivity analysis of overinvestment payback period. In the technical study are analysed the geometry (number of floors and housings, surface and volume) and characteristics of the building (orientation, location, heating transference global coefficient, number of heating conditioning floors and number of non heating conditioning floors). They are studied the designer criteria considering critical aspects (space availability for boiler and storage and accessibility for biomass supply) and safety systems (safety devices to avoid acid condensations and dissipate excess heat, safety valves and devices to keep appropriate pressure in hydraulic circuit). It is calculated the heating power (kW) considering losses by conduction heat and heat power (kW) to produce sanitary hot water in function of an estimation of hourly consumption profile (number of users, their hours and habits). They are analysed several biomass boilers, and it is selected the biomass boiler to install in the building in function of a selection criteria (power ranks, versatility in biomass fuel consumption, output, feeding and cleaning system). It is calculated total useful energy (kWh/year) required in the block of flats. Biomass fuel selection is done in base on its physical-chemical characteristics (calorific value, humidity and density), its cost, supply easiness and nearness of suppliers, and so, obtaining an economical process and a good output in the boiler. Biomass consumption (kg/year) is calculated in function of calorific value (kWh/kg), seasonal medium output of the boiler and total useful energy (kWh/year). Self-supply is determined considering all variables influent in fuel consumption calculus and therefore, storage volume and filled coefficient. In the economical study is detailed the budget (biomass boiler with auxiliary elements and civil work), it is studied economical viability of the biomass heating system compared with other conventional systems using fossil fuels (natural gas and gas oil) by means of ¿VDI 2067 Standard Norm¿, and it is analysed payback period sensitivity of the overinvestment respect to variations of biomass cost and other conventional fossil fuels costs used extensively. Project results indicate that it is possible installation of a biomass heating system in a building, so it has got economical and environmental profitability. Key words: biomass, renewable energy, biomass heating system, efficiency, zero emissions of CO2, cleaning technology, energy diversification, energy saving. | |
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Internacional
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Si |
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Nombre congreso
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10th Internacional Conference on Environmental Science and Technology |
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Tipo de participación
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960 |
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Lugar del congreso
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Kos.Grecia |
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Revisores
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Si |
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ISBN o ISSN
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978-960-7475-40-4 |
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DOI
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Fecha inicio congreso
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05/09/2007 |
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Fecha fin congreso
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07/09/2007 |
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