The cogeneration, or the combined production of electric and/or mechanical and thermal energy, is a well established technology now, which has important environmental benefits and has been noted by the European Community as one of the first elements to save primary energy, to avoid network losses and to reduce the greenhouse gas emissions. In particular, our interest will be focused on the micro-cogeneration, MCHP (electric power <15 kW), which represents a valid and interesting application of this technology which refers, above all, to residential and light commercial users. In particular, our work group started a R&D programme on micro-cogeneration in 1995: a laboratory, equipped with the most common appliances (washing-machine, dishwasher, storage water heater, …), has been built and some MCHP prototypes have been tested too. In this article, the results of an intense experimental activity on three different micro-cogenerators, one of them made in Japan and in a pre-selling phase, are reported. In a previous paper a detailed analysis of the test facility, with the description of the equipments and the data acquisition systems, can be found. A typical 3-E (Energetic, Economic and Environmental) approach has been performed to compare the proposed energy system, MCHP, to the conventional one based on separate “production”. In the energetic analysis the amount of primary energy savings provided by micro-cogeneration unit has been evaluated for different types of MCHP units and at various working conditions. Furthermore the evaluation of the equivalent CO2 emissions of the compared systems, MCHP and conventional systems, allows to calculate the MCHP potentials to reduce greenhouse gas emissions. Finally the Simple Pay Back approach has been considered to define the economic feasibility of cogeneration in small size applications with the varying of some economic variables (first cost, gas price, operating hours per year …).
Experimental analysis of micro-cogeneration units based on reciprocating internal combustion engine
SIBILIO, Sergio;
2006
Abstract
The cogeneration, or the combined production of electric and/or mechanical and thermal energy, is a well established technology now, which has important environmental benefits and has been noted by the European Community as one of the first elements to save primary energy, to avoid network losses and to reduce the greenhouse gas emissions. In particular, our interest will be focused on the micro-cogeneration, MCHP (electric power <15 kW), which represents a valid and interesting application of this technology which refers, above all, to residential and light commercial users. In particular, our work group started a R&D programme on micro-cogeneration in 1995: a laboratory, equipped with the most common appliances (washing-machine, dishwasher, storage water heater, …), has been built and some MCHP prototypes have been tested too. In this article, the results of an intense experimental activity on three different micro-cogenerators, one of them made in Japan and in a pre-selling phase, are reported. In a previous paper a detailed analysis of the test facility, with the description of the equipments and the data acquisition systems, can be found. A typical 3-E (Energetic, Economic and Environmental) approach has been performed to compare the proposed energy system, MCHP, to the conventional one based on separate “production”. In the energetic analysis the amount of primary energy savings provided by micro-cogeneration unit has been evaluated for different types of MCHP units and at various working conditions. Furthermore the evaluation of the equivalent CO2 emissions of the compared systems, MCHP and conventional systems, allows to calculate the MCHP potentials to reduce greenhouse gas emissions. Finally the Simple Pay Back approach has been considered to define the economic feasibility of cogeneration in small size applications with the varying of some economic variables (first cost, gas price, operating hours per year …).I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
