Ii-open coil heaters zii-air heaters eziveza indawo ephezulu ye-heating element ngqo kwi-airflow. Ukukhetha i-alloy, ubukhulu, kunye ne-wire gauge kukhethwa ngobuchule ukwenza isisombululo esenziwe ngokwezifiso ngokusekelwe kwiimfuno ezizodwa zesicelo. Iikhrayitheriya zesicelo ezisisiseko ekufuneka ziqwalaselwe ziquka ubushushu, ukuhamba komoya, uxinzelelo lomoya, indawo engqongileyo, isantya se-ramp, i-cycling frequency, indawo ebonakalayo, amandla akhoyo, kunye nobomi be-heater.

Iiheater zombane ze-open coil ziyafumaneka nangayiphi na isayizi ukusuka kwi-6” x 6” ukuya kwi-144” x 96” ukuya kuthi ga kwi-1000 KW kwicandelo elinye. Iiyunithi zeheater enye zilinganiswe ukuvelisa ukuya kuthi ga kwi-22.5 KW ngenyawo yesikwere sendawo yeduct. Iiheater ezininzi zingenziwa kwaye zifakwe kunye ukuze zilungele ubungakanani beduct enkulu okanye ii-KW. Zonke iivoltage ukuya kwi-600-volt single kunye ne-three phase ziyafumaneka.

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