The need for an efficient energy system in domestic houses push the research toward innovative cogeneration system, which can meets the needs for electricity, heating and cooling power. A good electrical conversion is achieved from an energy source when its temperature is over 250 °C. Both conventional and renewable sources can be used to run a domestic cogenerative system; they can be in the form of fossil fuels, biomass and solar energy. For the system here analysed a concentrating solar collectors provide hot diathermic at 300 °C, which is then employed to run a cogenerative Stirling engine. The engine generates electricity and hot water for heating and sanitary purpose, by exploiting the cooling power from the engine’s cold heat exchanger. The overall energy efficiency for this system can be up to 70%.
Heat Transfer Analysis and Modeling for a Coaxial Solar Collector in a Domestic Cogeneration System
Alberti, Fabrizio;Crema, Luigi;Bertaso, Alberto
2011-01-01
Abstract
The need for an efficient energy system in domestic houses push the research toward innovative cogeneration system, which can meets the needs for electricity, heating and cooling power. A good electrical conversion is achieved from an energy source when its temperature is over 250 °C. Both conventional and renewable sources can be used to run a domestic cogenerative system; they can be in the form of fossil fuels, biomass and solar energy. For the system here analysed a concentrating solar collectors provide hot diathermic at 300 °C, which is then employed to run a cogenerative Stirling engine. The engine generates electricity and hot water for heating and sanitary purpose, by exploiting the cooling power from the engine’s cold heat exchanger. The overall energy efficiency for this system can be up to 70%.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
