Cold Chain Coolant Tool

Tabela de referencia de refrigerantes e PCM para embalagens da cadeia de frio

Compare common refrigerants and phase change materials by phase-change point, calor latente, specific heat, freezing expansion, preconditioning need, and typical cold-chain use case before you prepare a packout or quotation request.

°C
Phase-change point for lane matching
KJ/kg
Latent heat reference range
%
Freezing expansion planning range

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Seletor rapido de refrigerante

Use the table to compare technical ranges, typical lane fit, and handling notes. Values are planning references; exact specifications vary by formulation, tamanho do pacote, estrutura do filme, and conditioning SOP.

Última revisão: 18 junho 2026






Common coolant and PCM planning values for cold-chain packaging comparison.
Comparar Refrigerante / PCM Phase-change point Calor latente Specific heat Expansion on freezing Pré-condicionamento Pistas mais adequadas Handling note
Water-based flexible gel ice pack
Pacote de gel reutilizável, bolsa macia, water-dominant refrigerant gel.
Pacote de gel0-10°C 		Around 0°C 300-334 KJ/kg Liquid approx. 4.18; frozen approx. 2.03 kJ/kg*K Sobre 8-9%; leave headspace in rigid designs. Freeze at -18°C or below until fully solid. Comida gelada, mercado, frutos do mar, 0-10°C parcels, buffered 2-8°Pistas C. Use separator layers for freeze-sensitive payloads. Good low-cost starting point for many chilled packouts.
Rigid ice brick
Hard-shell water or gel-filled brick for repeated handling and longer thermal mass.
Tijolo de geloReutilizável 		Around 0°C 300-334 KJ/kg Liquid approx. 4.18; frozen approx. 2.03 kJ/kg*K Sobre 8-9%; shell geometry must allow expansion. Freeze at -18°C ou abaixo; confirm core is fully frozen. Reusable food distribution, frutos do mar, EPP box programs, insulated delivery boxes. Higher durability than soft pouches. Check direct-contact freezing risk and payload loading pattern.
Conditioned 0°C gel pack
Frozen gel pack warmed or conditioned before loading to reduce product freezing risk.
Gel condicionado2-8°C support 		Around 0°C 280-330 KJ/kg Aprox.. 3.6-4.2 líquido; 1.8-2.4 frozen kJ/kg*K Tipicamente 6-9%, dependendo da formulação do gel. Congelar, then condition to the validated loading state before packout. 2-8°C pharma starter layouts, amostras de laboratório, freeze-sensitive chilled goods. Conditioning and separator placement matter more than the material name. Validar com dados do registrador.
+5°C PCM pack
PCM de temperatura positiva designed to release cold near the 2-8°C operating band.
PCMFarmacêutico 		Aprox.. +5°C 160-240 KJ/kg Aprox.. 2.0-4.0 kJ/kg*K by formulation Common planning range 3-8%. Charge below phase point per supplier SOP; avoid uncontrolled over-freezing for validated lanes. 2-8°C pharma, Biologics, vacinas, amostras de laboratório, freeze-sensitive cool-chain payloads. Often a better starting point than fully frozen gel packs when product freezing is a critical risk.
+20 to +25°C CRT PCM pack
PCM for controlled room temperature shipments where both heat and cold exposure matter.
CRT PCM15-25°C 		Aprox.. +20 to +25°C 140-220 KJ/kg Aprox.. 1.8-3.0 kJ/kg*K Often below water ice; use supplier expansion data. Condition within the validated CRT charge window before loading. 15-25°C controlled room temperature medicines and diagnostics. Not a chilled or frozen coolant. It buffers ambient excursions around room-temperature limits.
-5°C PCM or eutectic gel pack
Sub-zero coolant for stronger chilled performance where mild freezing risk can be controlled.
PCM abaixo de zeroRisco de congelamento 		Aprox.. -5°C 180-280 KJ/kg Aprox.. 2.5-4.0 kJ/kg*K Common planning range 4-10%. Freeze below -10°C or per formulation requirement. Frutos do mar, proteína, high thermal-load chilled freight, longer 0-10°Pistas C. Use with caution around vaccines, Biologics, leafy produce, and other freeze-sensitive payloads.
-18°C PCM / frozen eutectic pack
Frozen-lane PCM used when the payload must stay near standard frozen distribution temperatures.
PCM congelado≤ -18°C 		Aprox.. -18°C 170-260 KJ/kg Aprox.. 2.0-3.8 kJ/kg*K Common planning range 4-12%. Charge in a -25°C or colder freezer unless supplier specifies otherwise. Alimentos congelados, frutos do mar congelados, ice cream support, frozen e-commerce parcels. For deep frozen or long air/export routes, compare with dry ice and route-risk controls.
Sodium chloride brine eutectic pack
Salt-water eutectic refrigerant. Eutectic point is near -21.1°C at about 23.3 wt% NaCl.
BrineCongelado 		Near -21.1°C eutectic point Typical pack planning range 160-240 KJ/kg Aprox.. 2.0-3.8 kJ/kg*K by concentration Often lower than pure water, but container headspace is still required. Charge below eutectic point, commonly -25°C ou mais frio. Suporte congelado, exportação de frutos do mar, high thermal-load cold packs. Check corrosion compatibility and leakage control. Do not place directly against freeze-sensitive cargo.
Gelo seco pellet or block
Solid carbon dioxide coolant that sublimates directly to gas at atmospheric pressure.
CO2Vent required 		Sublimes near -78.5°C Sobre 571 kJ/kg sublimation energy Aprox.. 0.8-0.9 kJ/kg*K for solid CO2 Not a liquid-freezing pack; gas release requires vented packaging. Use dry ice as supplied; store and handle with ventilation and PPE. Congelado, dry-ice-compatible pharma, amostras de laboratório, sorvete, frozen air/export lanes. Air shipments require dry ice marking, Peso líquido, aceitação da transportadora, and dangerous-goods review.
Pasta de gelo / pasta de gelo
Fine ice crystals suspended in a carrier fluid for direct chilling or process-side cooling.
SlurryFood process 		Muitas vezes -2 to 0°C, depending on solution Aprox.. 80-250 kJ/kg by ice fraction Aprox.. 3.3-4.2 kJ/kg*K by mixture Depends on ice fraction and storage method. Generated by slurry ice system; not normally charged as a sealed pack. Frutos do mar, peixe, produce processing, short direct-contact cooling workflows. Useful for process cooling, but less common for sealed parcel cold-chain packaging.

Tabela de parametros comuns de refrigerantes e PCM

Tick up to three rows to compare the real trade-offs: temperature fit, cooling density, risco de congelamento, conditioning effort, and when each option is usually chosen.

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Comparacao de opcoes de refrigerante

Estimate the latent energy available from a selected coolant mass. This is not a thermal qualification result, but it helps compare refrigerant formats quickly.



Capacidade latente estimada

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kJ latent energy
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Wh equivalent
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kJ/kg used

Thermal performance also depends on insulation, temperatura da carga útil, perfil ambiente, colocação do pacote, e tempo de rota.

Verificacao de energia frigorifica latente

The best coolant is not only the coldest material. Match the phase point to the product temperature band, then check heat capacity, expansion, risco de contato, condicionamento, e controles de rota.

Associe o ponto de fase a faixa de temperatura

Para 2-8°Remessas C, +5°C PCM or carefully conditioned gel packs often reduce freezing risk. Para pistas congeladas, -18°C PCM, pacotes eutéticos, or dry ice may be more appropriate.

Use o calor latente como comparacao, nao como garantia

A higher kJ/kg value means more phase-change energy per kilogram, but packout geometry, isolamento, massa de carga útil, lacunas de ar, and ambient exposure decide the real hold time.

Reserve espaco para expansao e liberacao de gas

Water-rich packs expand when frozen. Gelo seco is different: it sublimates into carbon dioxide gas and must never be sealed in airtight packaging.

Como equipes da cadeia de frio devem ler a tabela

Use this page to shortlist the refrigerant family, then continue with pack quantity, risco de rota, dimensionamento, and shipment-readiness checks.

Para faixas congeladas

Use o Calculadora de gelo seco when dry ice, deep frozen cargo, frete aéreo, or export handling is part of the route.

Para incerteza de rota

Use o Verificador de risco de rota before finalizing packout assumptions for hot ambient, Horário de permanência, ou vias transfronteiriças.

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