Possibility of Direct Use of Energy Roofs.[POSSIBILITA DI IMPIEGO DIRETTO DI UN TETTO ENERGETICO.]

Energy roofs are roofing systems equipped with channels which allow both solar and atmospheric energy collection. They were conceived as cold source for heat pump systems. The behavior of an energy roof in DHW direct heating was studied; this might extend energy roof utilization all year long. The estimates were performed through more reliable recently proposed correlations for wind convection heat transfer coefficients. The advantage of annual energy roof utilization in DHW direct heating is predictable.