English: Passive daytime radiative cooling surfaces (PDRC) are efficient in solar reflectance and heat emittance to cool temperatures with zero energy consumption or pollution. Local application of PDRCs can replace air conditioning and mitigate urban heat island effect, while widespread application has been proposed as a solution to global warming.
í-kpó-áhà – Ị ga-enyerịrị ugo kwesịrị ekwesị, nye njikọ na ikikere ahụ, ma gosikwa ma emere mgbanwe. Ị nwere ike ime ya n'ụzọ ezi uche ọ bụla, mana ọ bụghị n'ụzọ ọ bụla na-egosi na onye nyere ikikere kwadoro gị maọbụ ojiji gị.
gbásàa kà – Ọ bụrụ na ị tụgharịgharịa, gbanwee, ma ọ bụ wulite n'elu ihe ahụ, ị ga-ekesa ndenye gị n'okpuru otu ma ọ bụ ikike dakọtara dị ka nke mbụ.
Tinye nkọwa otu ahịrị ihe faịlụ a na-anochi anya ya.
A diagram demonstrating the application of a passive daytime radiative cooling surface on an urban roof (left) versus an urban roof without application (right).