Afiri a ɛma aduan yɛ nwini ntɛmntɛm-yɛ mfiridwuma mu mfiri a ɛma aduan hyew so tew ntɛmntɛm kodu nwini ase, na ɛma ɛfa beae a nsukyenee ahwehwɛ a ɛdɔɔso sen biara no wɔ bere tiaa bi mu, na ɛnam so kora aduan pa so. Ne nnyinasosɛm a ɛyɛ adwuma no gyina ɔhyew a ɛkɔ ne ɔhyew a ɛkɔ so wɔ convection so titiriw. Nea edi kan no, wɔde aduan no to conveyor belt so na ɛkɔhyɛn afiri a ɛma nwini ntɛmntɛm-ɔhyew a ɛba fam-mu. Wɔ afiri no mu no, afiri bi a wɔde yɛ frigye (a wɔtaa de ammonia anaa Freon di dwuma sɛ frigye) ma mframa a ɛyɛ nwini ba. Wɔhyɛ mframa a ɛyɛ nwini yi ma ɛnam fan bi so di akɔneaba, na ɛne aduan no ani sesa ɔhyew na eyi ɔhyew fi hɔ ntɛmntɛm.
Wɔtaa hwɛ afiri a ɛyɛ nwini ntɛmntɛm-nwini no hyew so wɔ -30℃ne -120℃ntam, a egyina aduan ko ne nwini a ɛyɛ ntɛm-nwini a wɔhwehwɛ so. Bere a wɔde yɛ nwini ntɛmntɛm-no taa yɛ simma 10-25, na ɛhwɛ hu sɛ aduan no mu hyew titiriw no so tew ntɛmntɛm sen -18℃, na esiw mmoawa nketenkete dwumadi ano yiye na ɛtrɛw bere a wɔde sie no mu. Nneɛma atitiriw a ɛwɔ afiri a ɛma nwini ntɛmntɛm-mu no bi ne frigye compressor, evaporator, condenser, fan, ne control system. Evaporator no twetwe ɔhyew fi aduan no mu, frigye compressor no mia frigye mframa a ɛba fam-nhyɛso sua-nhyɛso a ɛba fam no ma ɛyɛ mframa a ɛyɛ hyew kɛse, nhyɛso kɛse, na condenser no ma mframa a ɛyɛ hyew kɛse, nhyɛso kɛse no yɛ nwini ma ɛyɛ nsu a ɛyɛ nhyɛso kɛse, na ɛma frigye kyinhyia no wie.
