A dynamic performance assessment for a number of micro-cogeneration systems, namely two different natural gas-fuelled internal combustion engines and a natural gas-fuelled reciprocating external combustion Stirling engine. These cogeneration units were integrated with an Italian multi-family house compliant with the transmittance values of both walls and windows suggested by the Italian Law. The operation of the residential building-integrated micro-cogeneration systems during the winter season was investigated by means of a whole building simulation software, considering the transient nature of building and occupant driven loads as well as the part-load characteristics of the cogeneration devices. Detailed models, developed within Annex 42 of the International Energy Agency (IEA) and calibrated on the basis of experimental results, were used for carefully predicting the performance of the cogeneration devices. The simulated performance of the proposed system were compared with those of a reference system composed of a natural gas-fired boiler (for thermal energy production) and the central grid (for electricity production) in order to assess the suitability of the cogeneration device-based system in comparison to the system based on separate energy production. The comparison was performed from energy point of view. The energy analysis was carried by determining the primary energy saving.
Energy performance assessment of three MCHP systems integrated in a multi-family house in the south of Italy
ROSATO, Antonio
;Scorpio, Michelangelo;SIBILIO, Sergio
2013
Abstract
A dynamic performance assessment for a number of micro-cogeneration systems, namely two different natural gas-fuelled internal combustion engines and a natural gas-fuelled reciprocating external combustion Stirling engine. These cogeneration units were integrated with an Italian multi-family house compliant with the transmittance values of both walls and windows suggested by the Italian Law. The operation of the residential building-integrated micro-cogeneration systems during the winter season was investigated by means of a whole building simulation software, considering the transient nature of building and occupant driven loads as well as the part-load characteristics of the cogeneration devices. Detailed models, developed within Annex 42 of the International Energy Agency (IEA) and calibrated on the basis of experimental results, were used for carefully predicting the performance of the cogeneration devices. The simulated performance of the proposed system were compared with those of a reference system composed of a natural gas-fired boiler (for thermal energy production) and the central grid (for electricity production) in order to assess the suitability of the cogeneration device-based system in comparison to the system based on separate energy production. The comparison was performed from energy point of view. The energy analysis was carried by determining the primary energy saving.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
