WHY LED?

The most advantage of LED lighting  is saving electric and very long living life. Let's compare the electric cost here.  At the present, the price is 3.5 baht/unit, 0.3baht/unit (FT), VAT is 7%. So total price is about 4.1 baht/unit            ( 3.5+0.3) x 1.07%=4.1

Electric cost compare (LED T8 TUBE)
 typepower  used(watt)  electric usage (unit/year)electric cost (baht/year)saving cost (baht/year) 
 fluorescent 36w +ballast 12w 36+12=48 (48*24/1000)*365=420 420*4.1=1722 ---
 led tube 18w 18 (18*24/1000)*365=158 158*4.1=648 1722-648=1074
 led tube 12w 12 (12*24/1000)*365=105 105*4.1=430 1722-430=1292


Electric cost compare (High bay)

 typepower  used(watt)  electric usage (unit/year)electric cost (baht/year)saving cost (baht/year) 
 normal lamp 400w +ballast 55w 400+55=455 (455*24/1000)*365=3986 3986*4.1=16343 ---
 led  100w 100 (100*24/1000)*365=876 876*4.1=3592 16343-3592=12751

子页面 (1): WHY COSMO LIGHTING
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