The recast of the Directive on energy performance of buildings introduces nearly zero-energy buildings. In this paper we discuss about what the expression “zero-energy building” could mean and how an existing Passivhaus might be improved to reach the zero-energy target in Italy, and to achieve satisfactory thermal comfort levels in summer in accordance to the norm EN 15251. A feasible way for this optimization was identified in the installation of an earth-to-air heat exchanger. Its contribution is rather limited during winter, if it is coupled to a high efficient heat recovery unit, while it becomes a solution of primary importance to reduce, or even neutralize, the energy required to reach summer comfort.
A Way To Net Zero Energy Buildings For Italy: How The Earth-To-Air Heat Exchanger Could Contribute To Reach The Target In Warm Climates
S. Carlucci
2010-01-01
Abstract
The recast of the Directive on energy performance of buildings introduces nearly zero-energy buildings. In this paper we discuss about what the expression “zero-energy building” could mean and how an existing Passivhaus might be improved to reach the zero-energy target in Italy, and to achieve satisfactory thermal comfort levels in summer in accordance to the norm EN 15251. A feasible way for this optimization was identified in the installation of an earth-to-air heat exchanger. Its contribution is rather limited during winter, if it is coupled to a high efficient heat recovery unit, while it becomes a solution of primary importance to reduce, or even neutralize, the energy required to reach summer comfort.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
