Kafin adanawa, sufuri da sarrafa kayan lambun da aka girbe, yakamata a cire zafin filin da sauri, kuma tsarin saurin sanyaya zafinsa zuwa yanayin da aka ƙayyade ana kiran shi precooling.Pre-sanyi na iya hana haɓakar yanayin yanayin ajiya da zafi na numfashi ke haifarwa, ta haka zai rage ƙarfin numfashi na kayan lambu da rage asarar bayan girbi.Nau'o'i daban-daban da nau'ikan kayan lambu suna buƙatar yanayi daban-daban kafin sanyi, kuma hanyoyin da suka dace kafin sanyaya suma sun bambanta.Domin yin sanyi kayan lambu a cikin lokaci bayan girbi, yana da kyau a yi haka a wurin asali.
Hanyoyin sanyaya kayan lambu musamman sun haɗa da:
1. Yanayin sanyi precooling yana sanya kayan lambu da aka girbe a cikin wuri mai sanyi da iska, don haka yanayin zafi na samfuran zai iya cimma manufar sanyaya.Wannan hanya mai sauƙi ne kuma mai sauƙi don aiki ba tare da wani kayan aiki ba.Hanya ce mai yuwuwa a wuraren da ke da yanayi mara kyau.Koyaya, wannan hanyar sanyayawar tana iyakance ta wurin zafin waje a wancan lokacin, kuma ba zai yuwu a kai zafin sanyin da samfurin ke buƙata ba.Bugu da ƙari, lokacin sanyi yana da tsawo kuma tasirin ba shi da kyau.A arewa, ana amfani da wannan hanyar kafin a sanyaya don adana kabeji na kasar Sin.
2. Wurin ajiya mai sanyi (Precooling Room) zai tara kayan lambu da aka cika a cikin akwatin marufi a cikin ajiyar sanyi.Yakamata a sami tazara tsakanin ma'ajin da kuma hanya guda ɗaya da hanyar iskar iskar iskar iskar tari na ajiyar sanyi don tabbatar da cewa za'a ɗauke zafin samfuran lokacin da iskar ta shuɗe.Don cimma kyakkyawan sakamako mai sanyaya sanyi, yawan kwararar iska a cikin sito ya kamata ya kai mita 1-2 a sakan daya, amma bai kamata ya yi girma da yawa ba don guje wa bushewar kayan lambu da yawa.Wannan hanyar ita ce hanyar sanyaya ta gama gari a halin yanzu kuma ana iya amfani da ita ga kowane irin kayan lambu.
3. Mai sanyaya iska mai tilastawa (mai sanyaya matsa lamba daban-daban) shine ƙirƙirar kwararar iska daban-daban a bangarorin biyu na tarin kwalin da ke ɗauke da kayayyaki, ta yadda za a tilasta iskan sanyi ta kowane akwati kuma ta zagaya kowane samfurin, don haka yana ɗauke da samfuran. zafin samfurin.Wannan hanyar tana kusan sau 4 zuwa 10 da sauri fiye da sanyin ajiya na sanyi, yayin da sanyin ajiyar sanyi zai iya sa zafin samfurin ya haskaka daga saman akwatin marufi.Wannan hanyar sanyayawar kuma ana amfani da ita ga yawancin kayan lambu.Akwai hanyoyi da yawa na tilasta samun iska sanyaya.An yi amfani da hanyar sanyaya rami shekaru da yawa a Afirka ta Kudu da Amurka.Bayan shekaru na bincike da ma'aikatan kimiya da fasaha suka yi, kasar Sin ta tsara wani wurin sanyaya iska mai sauki ta tilas.
Hanya ta musamman ita ce sanya samfurin a cikin akwati tare da ƙayyadaddun ƙayyadaddun kayan aiki da ramukan samun iska iri ɗaya, sanya akwatin a cikin tari mai rectangular, bar tazara a madaidaiciyar shugabanci na cibiyar tari, rufe ƙarshen tari biyu da saman. tari tam tare da zane ko fim ɗin filastik, ɗayan ƙarshen wanda aka haɗa tare da fan don shayarwa, ta yadda rata a cikin tari ya zama yankin damuwa, tilasta iska mai sanyi a ɓangarorin biyu na zanen da ba a rufe ba don shiga cikin ƙananan- Yankin matsa lamba daga ramin samun iska na akwatin kunshin, Zafin da ke cikin samfurin yana gudana ne daga yankin ƙananan matsa lamba, sa'an nan kuma fitar da shi zuwa tari ta fan don cimma tasirin precooling.Dole ne wannan hanya ta kula da madaidaicin madaidaicin lokuta na tattarawa da kuma madaidaicin jeri na zane da fan, ta yadda iska mai sanyi zata iya shiga kawai ta ramin huɗa akan akwati, in ba haka ba ba za a iya samun tasirin sanyi ba.
4. Vacuum precooling (Vacuum Cooler) shine a saka kayan lambu a cikin akwati da aka rufe, da sauri zana iska a cikin akwati, rage matsin lamba a cikin akwati, kuma sanya samfurin yayi sanyi saboda fitar da ruwan saman.A al'ada matsa lamba na yanayi (101.3 kPa, 760 mm Hg *), ruwa yana ƙafe a 100 ℃, kuma lokacin da matsa lamba ya sauka zuwa 0.53 kPa, ruwa na iya ƙafe a 0 ℃.Lokacin da zafin jiki ya faɗi da 5 ℃, kusan 1% na nauyin samfurin yana ƙafe.Domin kada kayan lambu su rasa ruwa da yawa, a fesa wasu ruwa kafin a sanyaya.Wannan hanya ta shafi precooling kayan lambu masu ganye.Bugu da ƙari, irin su bishiyar asparagus, namomin kaza, Brussels sprouts, da wake na Dutch kuma za a iya sanyaya su da wuri.Za a iya aiwatar da hanyar kafin sanyaya ruwa kawai tare da na'urar sanyaya na musamman, kuma jarin yana da girma.A halin yanzu, ana amfani da wannan hanya don sanyaya kayan lambu don fitar da su zuwa China.
5. Ruwan sanyi mai sanyi (Hydro Cooler) shine fesa ruwan sanyi (kusan 0 ℃) akan kayan lambu, ko nutsar da kayan lambu a cikin ruwan sanyi mai gudana don cimma manufar sanyaya kayan lambu.Saboda ƙarfin zafi na ruwa ya fi na iska girma, hanyar sanyaya ruwa mai sanyi ta amfani da ruwa kamar yadda matsakaicin zafin zafi ya fi sauri fiye da hanyar sanyaya iska, kuma ana iya sake yin amfani da ruwan sanyaya.Koyaya, ruwan sanyi dole ne a shafe shi, in ba haka ba samfurin zai gurɓata da ƙwayoyin cuta.Don haka, ya kamata a ƙara wasu ƙwayoyin cuta a cikin ruwan sanyi.
Kayan aiki don hanyar sanyaya ruwan sanyi shine mai sanyaya ruwa, wanda kuma yakamata a tsaftace shi da ruwa akai-akai yayin amfani.Ana iya haɗa hanyar kafin sanyi ta ruwan sanyi tare da tsaftacewa bayan girbi da kuma lalata kayan lambu.Wannan hanyar da aka riga aka sanyaya ta fi dacewa ga kayan lambu na 'ya'yan itace da tushen kayan lambu, amma ba ga kayan lambu ba.
6. Tuntuɓi kankara pre-sanyi (Ice Injector) kari ne ga sauran hanyoyin sanyaya.Shi ne a sanya dakakken kankara ko cakuda kankara da gishiri a saman kayan kayan lambu a cikin kwandon dakon kaya ko mota ko jirgin kasa.Wannan zai iya rage yawan zafin jiki na samfurin, tabbatar da sabo na samfurin yayin sufuri, kuma yana taka rawar sanyi.Koyaya, ana iya amfani da wannan hanyar kawai don samfuran da ke hulɗa da kankara kuma ba za su haifar da lalacewa ba.Kamar alayyafo, broccoli da radish.
Lokacin aikawa: Juni-03-2022