Becul cu filament
Avantaje: Becul incandescent sau cu filament emite o lumină galbenă, caldă şi directă, asemănătoare cu una naturală. Nivelul de lumină poate fi uşo
r controlat, pentru că becurile de acest gen se găsesc într-o varietate de tipuri (de 15, 25, 45, 60, 75, 100 şi 150 waţi). Un bec costă aproximativ un leu.
Dezavantaje: Are 1.000 de ore durată de viaţă. 95% din energia consumată de un bec incandescent este emisă sub formă de căldură, doar 5% fiind receptată ca lumină vizibilă. Acest bec consumă multă energie electrică.
Becul fluorescent
Avantaje: Un bec fluorescent sau economic de 9 waţi consumă cu 85% mai puţină energie decât unul cu filament, de 45 de waţi. Are durata de “viaţă” de 8.000 de ore, de opt ori mai mare decât a unui bec incandescent. Pentru că durează mult în timp şi nu trebuie schimbat la intervale scurte, e foarte indicat pentru zonele mai greu accesibile. De asemenea, nu se încălzeşte.
Dezavantaje: Dă o lumină albă, rece, incomodă pentru ochi. E mai scump decât becul cu filament, costând aproximativ 8 lei.
Comisia Europeană interzice becul clasic din 2012
O decizie a Comisiei Europene prevede ca până în anul 2012 toate becurile incandescente să fie înlocuite cu cele fluorescente, care sunt ecologice. Măsura a fost luată pentru economisirea energiei electrice la nivelul întregii Europe şi reducerea poluării.
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