This work, carried out at the Pisa University, deals with the energy performance study of a single family house located in Campo nell'Elba (north-central Italy) with the aim to develop a series of improvements to reduce energy consumption and the associated greenhouse gas emissions. The paper gives a brief presentation of the house and of the energy-saving measures. It also presents results of the total energy consumption (according to the energy performance requirements introduced in Italy in 2006) including specific uses, the improvements introduced with the adopted energy-saving measures and a benefit-cost analysis to assess the most economical action to be performed. In the second part of the paper, radiant floor and ceiling panels were investigated by means of Computational Fluid Dynamic analysis using the AnsysFluent CFD commercial code. A 3D geometry model was developed including large area furnishings like the couch and the table. The internal room temperature using radiant floor panel results to be more uniform with respect to that obtained using ceiling panel. Moreover, the study conducted on the radiation ceiling panel showed as the warm air tend to stagnate at the top of the room with consequent "hot head effect" in contrast with the request of thermal comfort, confirming that the radiant ceiling panel solution is more suitable for higher rooms (over 4 m), typical of old houses and of industrial building.

Energy efficiency comparison between radiant ceiling and floor panel, based on CFD analysis, for a household in centre northern Italy

MARTELLI, DANIELE;FORGIONE, NICOLA;BARTOLI, CARLO
2014

Abstract

This work, carried out at the Pisa University, deals with the energy performance study of a single family house located in Campo nell'Elba (north-central Italy) with the aim to develop a series of improvements to reduce energy consumption and the associated greenhouse gas emissions. The paper gives a brief presentation of the house and of the energy-saving measures. It also presents results of the total energy consumption (according to the energy performance requirements introduced in Italy in 2006) including specific uses, the improvements introduced with the adopted energy-saving measures and a benefit-cost analysis to assess the most economical action to be performed. In the second part of the paper, radiant floor and ceiling panels were investigated by means of Computational Fluid Dynamic analysis using the AnsysFluent CFD commercial code. A 3D geometry model was developed including large area furnishings like the couch and the table. The internal room temperature using radiant floor panel results to be more uniform with respect to that obtained using ceiling panel. Moreover, the study conducted on the radiation ceiling panel showed as the warm air tend to stagnate at the top of the room with consequent "hot head effect" in contrast with the request of thermal comfort, confirming that the radiant ceiling panel solution is more suitable for higher rooms (over 4 m), typical of old houses and of industrial building.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11568/529069
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