THE COOLING POTENTIAL OF A METALLIC NOCTURNAL RADIATOR

The dynamic performance of a radiative cooling system for buildings is calculated and presented in the present paper. The cooling system con sists of a lightweight metallic radiator covered by a single polyethyl ene wind screen and used for cooling the ambient air below its designe d initial temperature. The cooler air is directed and eventually mixed with the indoor air of the building to provide primarily instantaneou s thermal comfort during the night and secondly to cool the interior m ass of the building by convection, thus creating a cold storage for th e following day. The present system analysis was performed for one amo ng a large number of rehabilitated historical industrial buildings loc ated in Legnano-a city close to Milano. The dynamic thermal performanc e of the system during the summer period has been calculated using an accurate mathematical model. Temporal variations of the radiator perfo rmance have been developed as a function of all the input parameters. (C) 1998 Elsevier Science S.A. All rights reserved.The dynamic perform ance of a radiative cooling system for buildings is calculated and pre sented in the present paper. The cooling system consists of a lightwei ght metallic radiator covered by a single polyethylene wind screen and used for cooling the ambient air below its designed initial temperatu re. The cooler air is directed and eventually mixed with the indoor ai r of the building to provide primarily instantaneous thermal comfort d uring the night and secondly to cool the interior mass of the building by convection, thus creating a cold storage for the following day. Th e present system analysis was performed for one among a large number o f rehabilitated historical industrial buildings located in Legnano-a c ity close to Milano. The dynamic thermal performance of the system dur ing the summer period has been calculated using an accurate mathematic al model. Temporal variations of the radiator performance have been de veloped as a function of all the input parameters. (C) 1998 Elsevier S cience S.A. All rights reserved.