Now choose the AC best suited to your re­gion

Down to Earth - - THE FORTNIGHT -

THE BUREAU of En­ergy Ef­fi­ciency ( BEE) has in­tro­duced a new star rat­ing sys­tem—In­dian Sea­sonal En­ergy Ef­fi­ciency Ra­tio ( ISEER)— that takes into ac­count dif­fer­ent cli­matic zones in In­dia. Ac­cord­ing to BEE, the new rat­ing method­ol­ogy will help usher in higher en­ergy ef­fi­ciency of ap­pli­ances and re­duce en­ergy con­sump­tion un­der dif­fer­ent In­dian cli­matic con­di­tions. This will en­able In­dian con­sumers to choose an AC that is best suited to the cli­matic con­di­tions of a par­tic­u­lar re­gion. ISEER mea­sures en­ergy ef­fi­ciency of air-con­di­tion­ers based on a weighted av­er­age of per­for­mance at out­side tem­per­a­tures be­tween 24 and 43ÊC based on In­dian weather data. As per the In­dian Weather Data Hand­book of 2014, the weather pro­file of 54 ma­jor cities shows that 65 per cent of the to­tal num­ber of hours in a year have a tem­per­a­ture above 24ÊC. ACs in In­dia have so far been tested at stan­dard op­er­at­ing con­di­tions of 35ÊC.

ISTOCK PHO­TOS

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