Refrigerant ndiye njira yogwirira ntchito yozungulira mufiriji mu kompresa mpweya woziziritsidwa mu chiller wamadzi. Refrigerant imatenga kutentha panthawi ya vaporization mu evaporator ndiyeno imatulutsa kutentha panthawi ya condensation mu condenser. Njira ziwirizi zopita mmbuyo ndi mtsogolo zimapangitsa chiller kukhala mufiriji. Pali mitundu iwiri ya mafiriji m'mafakitale -- firiji yogwirizana ndi chilengedwe kuphatikiza R134A, R410A ndi R407C komanso mafiriji omwe si ochezeka ndi chilengedwe kuphatikiza R22.
Pankhani ya kupanga, S&A Teyu adayika zida zopangira yuan yopitilira miliyoni imodzi, kuwonetsetsa kuti njira zingapo zikuyenda bwino kuchokera kuzinthu zazikuluzikulu (condenser) za mafakitale oziziritsa kukhosi mpaka kuwotcherera kwachitsulo; kukhudzana ndi logistics, S&A Teyu yakhazikitsa malo osungiramo katundu m'mizinda ikuluikulu ya China, atachepetsa kwambiri kuwonongeka kwa katundu chifukwa cha mtunda wautali wa katundu, komanso kupititsa patsogolo kayendedwe kabwino; pankhani ya pambuyo-kugulitsa utumiki, nthawi chitsimikizo ndi zaka ziwiri.
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