With the rapid development of material science,the application of radiative sky cooling technology in daytime has gradually become a reality.In this paper,the appli-cations of radiative sky cooling technology in lightweight prefabricated house are studied using EnergyPlus software.The results show that the critical values for achieving all-day radiative sky cooling for lightweight prefabricated house are:when ε is 0.9 and 0.98,R is not less than 0.949 and 0.944,Respectively.Compared with the air-conditioning energy consumption under the conditions of ε=0.1 and R=0.5,the air-conditioning energy con-sumption under the conditions of ε=0.9 and R=0.9 can be reduced by 18.7％.The re-search results can provide important reference and guidance for the effective applications of radiative sky cooling technology in lightweight prefabricated house.
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