Yaya Tsawon Yaya Busasshen Ice Yake Tsayawa a cikin Akwatin da aka Keɓance?

Rike Mai Aiki -Jagorar Lokaci Da Aka Gina Kusa da Ayyukan Insulation (Tare da Bayanan Gaskiya + Misalan jigilar kaya)

Busasshen ƙanƙara yana ɗaya daga cikin mafi inganci kayan sanyaya a cikin kayan aikin sanyi{0}} sarka. Yana iya ajiye abincin teku, daskararre nama, magunguna, da zafin jiki{2}masana sinadarai masu zurfi a cikin yanayin daskarewa-. Amma tambaya ɗaya koyaushe tana zuwa ta farko:

Har yaushe busasshen ƙanƙara zai dawwama a cikin akwati da aka keɓe?

Amsar mafi gaskiya ita ce: ya dogara da yadda zafi ya shiga cikin akwatin da sauri. Abin da ya sa ainihin batun ba kawai bushe kankara ba ne, amma har ma daaikin rufi na akwati.

Ga yawancin ayyukan jigilar kaya da sanyi{0}} sarkar, tsarin tsari gama gari shine:

• Yi tsammanin 5-10 lb na busasshen ƙanƙara don yin jujjuya kowane sa'o'i 24 a cikin rijiyar da aka keɓe.
• FedEx kuma yana ba da shawarar amfaniakalla 5-10 lb a kowace awa 24, da kuma ƙara ƙarin busasshen ƙanƙara don jinkiri.

Don haka don ƙima mai sauƙi:

Wannan ba "garanti bane." Yana da tushe mai amfani wanda ke taimaka wa ƙungiyoyin sayayya su guji ɗaukar kaya a ƙarƙashin{1}}.

Busasshen ƙanƙara shinem carbon dioxide (CO₂). Ba ya narke cikin ruwa. Yana juya kai tsaye zuwa gas, wanda ake kirasublimation. Britannica ta tabbatar da busassun ƙanƙara sublimates a-78.5 digiri (-109.3 digiri F).

Wannan zafin yana bayyana dalilin da yasa ake amfani da busasshen ƙanƙara don jigilar kaya mai zurfi-. Hakanan yana bayanin dalilin da yasa ya ɓace da sauri idan rufin yana da rauni.

Busassun ƙanƙara kuma yana ɗaukar zafi mai yawa yayin sublimation. Ƙimar ma'anar injiniya ta gama gari tana game da571 kJ/kg(kuwaye246 BTU/lb) na sanyaya daga makamashin sublimation.

Busasshen ƙanƙara yana samar da iskar CO₂, don haka kwantenadole ne a ba da izinin iskar gas. Kar a rufe busasshen mai jigilar ƙanƙara mara iska.

Bayanin madauwari na FAA:fam guda na busasshen ƙanƙara yana ƙara zuwa kusan ƙafar cubic 8.8 na iskar CO₂.
Wannan shine dalilin da ya sa busasshen jigilar kankara yana buƙatar marufi mai dacewa da samun iska.

Busasshen ƙanƙara "yana dawwama" bisa ga samun zafi. Idan zafi yana motsawa a cikin akwati a hankali, bushewar ƙanƙara yana ƙara girma a hankali. Idan zafi yana motsawa cikin sauri, bushewar ƙanƙara yana cinyewa da sauri.

Wannan shi ya sarufi iyawashine core factor don riƙe lokaci.

 

Hanyoyi 3 Zafi Yana Shiga Kwantena

Gudanarwa- zafi yana motsawa ta bangon akwati

Convection- iska mai dumi tana yawo ta ramuka ko yawo cikin sarari mara komai

Radiation- hasken rana da wurare masu zafi suna ɗaga nauyin zafi

A cikin sharuddan sayayya:kauri bango + rufin core + murfin murfiyanke shawarar ainihin aikin.

Wasu kafofin suna ba da jeri na tsarawa, amma nazarin jiragen sama da na tsaro kuma suna ba da ƙimar ƙima.

Rahoton da'ira na FAA na ba da rahoton da'ira ta gwada ƙididdige ƙimar ƙima a cikin marufi:

• Adadi masu yawa (a kusa da100 lb) iya sublimate a game da1% a kowace awa
• Ƙananan adadin (a kusa da5 lb) iya sublimate a game da2% a kowace awa

Wannan yana goyan bayan mahimmin gaskiya:ƙananan busassun adadin ƙanƙara suna ɓacewa da sauri, musamman lokacin da kwandon ya kasance akai-akai ga iska mai dumi.

Ko da tare da akwati ɗaya, busassun lokacin ƙanƙara na iya motsawa da yawa. Waɗannan su ne manyan direbobi:

Matakan rufin kwantena
Kyakkyawan rufi yana nufin ƙarancin ɗigon zafi, don haka bushewar ƙanƙara ya daɗe. UPS tana amfani da 5 – 10 lb a kowace sa'o'i 24 a matsayin tushe, amma kuma yana lura da ƙimar gaske ta dogara da yanayi.

Yanayin yanayi
Gidan ajiya a digiri 20 da filin ajiye motoci a digiri 35 ba su da hali iri ɗaya.

Tsarin kankara bushe: tubalan vs pellets
Pellets suna da ƙarin sararin sama, don haka suna yin ƙasa da sauri. Wani bincike na FAA ya gano busasshen ƙanƙara a cikin ƙananan adadin ya nuna halayen haɓakawa, kuma binciken ya auna matsakaici.~ 2.0% / awaƙimar a cikin kwantena na jigilar kaya yayin gwaji.
ThermoSafe kuma yayi bayanin cewa shinge ko tubalan suna dadewa fiye da pellets saboda ƙananan fili da aka fallasa.

Matattu -sararin iska da shiryarwa mara kyau
Ƙarin sarari mara komai yana haɓaka haɓakawa. CISA busasshen ƙanƙara share fage yayi kashedin cewamataccen sararin samaniya a cikin akwati yana haifar da bushewar ƙanƙara don yin ƙasa da sauri.

Mitar buɗewa
Kowane budewa yana maye gurbin iskar gas mai sanyi da iska mai dumi. Wannan nauyin zafi yana kashe busasshen ƙanƙara.

Fara zafin samfurin ku
Jigilar daskararrun samfur ya fi sauƙi fiye da jigilar samfuri mai sanyi. Kadan "dumi" a ciki yana nufin ƙarancin busasshen ƙanƙara da ake buƙata da wuri.

Wannan shine inda aka fi yanke shawarar lokaci{0}. Nau'o'in kwantena daban-daban ba daidai ba ne, har ma da girma iri ɗaya.

1) Akwatunan Kumfa EPS (Fadde Polystyrene / "Styrofoam")
Masu jigilar kumfa EPS na kowa ne saboda suna da ƙarancin farashi kuma suna da sauƙin samo asali. Suna aiki don gajerun hanyoyin isarwa.
Amma EPS sau da yawa yana da iyaka:
sasanninta suna lalacewa yayin tarawa
murfi bazai rufe sosai ba
aikin yana raguwa lokacin da kumfa ya lalace
Idan burin ya kasance daidaitaccen lokacin riƙon kwanaki da yawa, EPS yawanci ba shine zaɓi mafi ƙarfi ba.

2) Akwatunan Kumfa EPP (Fadde Polypropylene)
Ana amfani da EPP don ayyukan sake amfani da maimaitawa. Yana da ƙarfi fiye da EPS a yawancin lokuta.
Har yanzu, lokacin riƙewa ya dogara da kauri da rufewa. Idan murfin murfin bai tsaya ba, asarar convection yana ƙaruwa.

3) PU Foam Insulated Shippers (Rigid Shell + Polyurethane Core)
Wannan sanannen tsarin masana'antu ne saboda kumfa polyurethane yana ba da kariya mai ƙarfi lokacin da aka ƙera shi da kyau.
FedEx ya nuna cewa marufi yana da mahimmanci, kuma yana amfani da 5-10 lb a cikin sa'o'i 24 na tsara kewayon don jigilar kankara bushe.
Yawancin masana'antun suna siffanta babban aikin rufewa{0}a matsayin ginin kumfa mai kauri na PU. A aikace, kauri mai kauri yana ƙoƙarin rage yawan zafi, wanda kai tsaye yana rage bushewar ƙanƙara.

4) Rotomolded LLDPE Insulated Containers (LLDPE Shell + PU Foam Core)

Wannan shine ɗayan mafi ingantaccen tsarin don maimaita sanyi{0}sarkar kayan aikin saƙo, musamman lokacin da ƙarfi yana da mahimmanci kamar rufi.

Me yasa LLDPE rotomolded yana taimakawa:
Juyawa gyare-gyare (rotomolding) ana amfani dashi sosai don ƙirƙiramai ƙarfi, sassan filastik maras kyau. Mutunci Rotational yana bayyana rotomolding azaman samarwasassa guda - ba tare da kabu ko walda ba.

Wannan yana da mahimmanci a cikin jigilar kaya saboda sau da yawa seams suna zama rauni don tsagewa da zubar zafi. Harsashi guda ɗaya{1} yana taimakawa rage gazawar maki yayin tasiri da tari.

Me yasa aka fi amfani da LLDPE a cikin rotomolding:
Wani kamfani ya lura ana amfani da LLDPE sau da yawa a cikin rotomolding saboda haka nem amma mai gafartawa.
Ita ma kungiyar Filla-filla ta Burtaniya ta bayyanaLLDPE yana ɗaya daga cikin abubuwan gama gari da ake amfani da su wajen gyare-gyaren juyawa.

Me yasa PU foam core ya kammala tsarin:
LLDPE harsashi na waje yana ba da tsari. Babban kumfa na PU yana ba da juriya na thermal. Tare, wannan ƙira yana goyan bayan ingantaccen aiki a cikin haƙiƙanin rarraba rarraba.

Wannan shine tsarin da aka saba amfani dashi a yawancinFilastik kwantena masu rufi, harda aRotomolded Cooler Boxana amfani da su don abincin teku, daskararre nama, da isar da nisa.

Idan aikin yana buƙatar madaidaicin mai jigilar kaya don sanyi{0}}sake amfani da sarkar, wannan tsarin sau da yawa yana yin aiki fiye da tsarin kumfa kawai{1}}.

 

A cikin sharuddan samfur mai amfani, kwantena kamar aAkwatin Insulated Polar PolarkoAkwatunan Kifi Mai Kashe Polarsau da yawa ana gina su a kusa da wannan ra'ayi: mai ƙarfi na waje, barga mai rufi, da abin dogara.

Misali 1: Jirgin ruwan daskararre na awa 48

Mai fitar da abincin teku yana son ingantaccen yanayin daskararre ta amfani da shiBusassun Kwantenan Kankarakuma yana so ya rage haɗarin wucewa.

Tsari mai amfani yayi kama da haka:

• zaɓi ƙirar LLDPE + PU rotomolded ko babban mai jigilar kaya na PU{1}
• shirya tubalan maimakon pellet idan zai yiwu
• guje wa mutuwa{0}}sararin iska ta wurin tattara kaya
• shirya bushe ƙanƙara kamar10-20 lb na 48 hoursamfani da 5-10 lb / rana tushe
• ƙara buffer idan jinkirin hanya zai yiwu

Anan shineManyan kwantenan da aka keɓena iya zama da amfani ga manya-manyan lodin girma - waɗanda ke buƙatar tsari mai ƙarfi da maimaita amfani.

Misali 2: Ƙananan jigilar magunguna tare da busasshiyar ƙanƙara

Ƙananan fakiti sukan rasa busasshen ƙanƙara da sauri. Bayanan FAA yana nuna ƙananan adadi (5 lb) na iya ƙaddamarwa a kusa2% a kowace awaƙarƙashin yanayin gwaji.
Wannan shi ne dalili guda ɗaya da ƙananan kaya sukan buƙaci:

• mafi kyau sealing
• mafi kyawun rufin kauri
• karin busar ƙanƙara buffer

Ba koyaushe kuna buƙatar ƙarin busasshiyar ƙanƙara ba. Sau da yawa, kuna buƙatar mafi kyawun sarrafa samun zafi.

Zabi akwati da ya dace tukuna
Yi amfani da ƙaƙƙarfan saitin rufi lokacin jigilar kaya sama da awanni 24. UPS da FedEx duka suna nuni ga 5-10 lb kowace rana tsarin tsara tsarin, amma ƙirar ƙira tana sarrafa ko shirin yana aiki.

Yi amfani da tubalan lokacin da ya dace
Pellets suna yin sanyi da sauri, amma tubalan sun daɗe.

Rage sararin samaniya mara komai
Matattu iskar tana saurin sublimation. Cika ƙarar da samfur ko masu cikawa don haka iska ta iyakance.

Buɗe ƙasa da yawa
Kowane buɗewa yana ƙara zafi, kuma busassun ƙanƙara yana biyan kuɗin.

Ka kiyaye shi daga tushen zafi
Kada a sanya mai jigilar kaya a ƙasa mai zafi ko a cikin hasken rana kai tsaye. Waɗannan ƙananan bayanai ne, amma suna canza lokacin riƙewa.

Shin kankara zai iya ɗaukar kwanaki 3 a cikin akwati da aka keɓe?
Haka ne, yana iya, amma yawanci yana buƙatar duka rufi mai ƙarfi da isasshen bushewar ƙanƙara. Tsarin tsari na gama gari shine5-10 lb a kowace awa 24, don haka 72 hours sau da yawa bukatar15-30 lbdangane da yanayi.

Shin kwandon zai iya zama mara iska?
A'a. Busasshen ƙanƙara dole ne ya fitar da iskar CO₂. Takardun FAA suna nuna haɓakar ƙarar CO₂ da buƙatar ayyukan iskar iska.

Menene mafi mahimmanci: kayan kwantena ko busassun adadin kankara?
Dukansu al'amura, amma ƙirar rufi yawanci yakan zo na farko. Akwati mai rauni yana zubar da busasshiyar kankara.

Idan makasudin ya dogara da lokacin bushewar ƙanƙara, yanke shawara ya kamata ya fara da akwati, ba busassun kankara ba.

Amfani5-10 lb a kowace awa 24a matsayin tushen tsarin

Rage samun zafi ta hanyar ƙulli mai ƙarfi da mafi kyawun rufewa

Don matsananciyar kulawa da maimaita amfani,rotomolded LLDPE + PU kumfatsari ne mai amfani saboda ya haɗu da ƙarfin harsashi maras kyau tare da ingantaccen aikin rufewa

Shirya mafi wayo (tubalan, cikawa, ƙarancin buɗe ido) don kare lokacin riƙewa