Cold Storage Engineering
Blast Freezer
Blast freezer rooms operating at -35°C to -40°C with freezing racks or blast tunnels, suited to individual quick freezing and large-batch rapid freezing of meat, seafood and prepared meals.
View Details →Controlled Atmosphere Cold Store
Model: ANC-QTK Series
Cold Storage Engineering
Controlled-atmosphere fresh-keeping cold rooms operating at 0–4°C with adjustable 2–5% O₂ and 1–5% CO₂, equipped with a CA system and airtight room body for long-term storage of apples, kiwifruit and other produce.
Key Features
- 0–4°C low temperature with adjustable controlled atmosphere of 2–5% O₂ and 1–5% CO₂
- Complete CA system with PSA/membrane nitrogen generation, CO₂ scrubbing and ethylene removal
- Airtight room body and insulated doors, with pressure decay test upon completion
- CA-specific low-temperature-difference units stabilize room temperature and gas concentrations
- PLC online monitoring of O₂/CO₂/temperature/humidity, with remote access and historical curves
Applications
- Long-term storage of apples and pears for off-peak sales
- Fresh keeping of kiwifruit, grapes and other specialty fruits
- Storage for high-end fruit and vegetable exports
- Fruit and vegetable farms and cooperatives
- Turnover rooms for fruit traders
Controlled-atmosphere rooms reduce oxygen, regulate CO₂ and remove ethylene on top of chilled storage, significantly suppressing ripening and aging and extending the storage life of apples, kiwifruit and pears several-fold; a core facility for long-term storage and off-peak sales of premium produce.
Gas specifications: room temperature 0–4°C; oxygen 2–5%, CO₂ 1–5% (set by produce-specific process curves), with controlled ethylene levels.
CA system: PSA or membrane nitrogen generator, CO₂ scrubber, ethylene remover, gas analyzers and pressure-balancing bags, configured by room volume and produce; CA units and piping receive corrosion and insulation treatment.
Airtight room body: double-sided color steel polyurethane sandwich panels (100mm/150mm) with airtight seams and wall penetrations, airtight insulated doors with compression devices; a pressure decay test is performed upon completion.
Refrigeration system: CA-specific fresh-keeping units with low temperature difference and high capacity, preventing room-temperature fluctuations from destabilizing gas concentrations; air cooler layout ensures even gas circulation.
Control and monitoring: PLC linked to the CA control cabinet for online monitoring and regulation of O₂/CO₂/temperature/humidity, with remote access and historical curves; alarms and gas makeup or scrubbing programs trigger automatically on anomalies.
Delivery: 10–15 days design, 35–60 days production, 15–30 days installation, including airtight tests and gas concentration commissioning.
Technical Specifications
Room Body
| Item | Standard Configuration |
|---|---|
| Panel Material | Double-sided color steel polyurethane sandwich panels (airtight seam treatment) |
| Panel Thickness | 100mm / 150mm |
| Airtightness Requirements | Airtight wall penetrations and seams, pressure-decay test after completion |
| Fire Rating | Class B1 |
| Door | Airtight insulated door + mechanical compression device |
| Floor | Moisture-proof insulated floor |
Refrigeration Unit
CA-specific fresh-keeping units (small temperature difference, high capacity), reciprocating or scroll parallel
Control System
PLC + CA control cabinet; online monitoring and regulation of O₂/CO₂/temperature/humidity, remote viewing and history curves, automatic alarms
Gas Specifications
O₂ 2–5%, CO₂ 1–5% (set by product process curve), ethylene level controlled
Applicable Temperature Range
0℃～4℃
Acceptance Criteria
GB 50072 cold room design standard; airtightness pressure-decay test and gas concentration commissioning
Air Cooler Configuration
Fresh-keeping ceiling air coolers ensuring uniform gas circulation
Controlled Atmosphere (CA) System
| Equipment | Configuration Description |
|---|---|
| Nitrogen generator | PSA nitrogen generation / membrane nitrogen generation |
| CO₂ scrubber | Selected by room volume and product respiration intensity |
Typical Project Scale
| Size Tier | Single-room Volume (m³) | Room body area (m²) | Reference Room Height (m) |
|---|---|---|---|
| Small | 100 | 40 | 3.0 |
| Medium | 500 | 160 | 3.5 |
| Large | 2000 | 600 | 4.0 |
Typical Application Industries
Long-term apple and pear storage, kiwifruit and grape preservation, premium produce export, fruit trade
CA Auxiliary Equipment
Ethylene removal unit, gas analyzer, pressure balance bag, CA control cabinet
Construction Period & Delivery
Design 10–15 days, production 35–60 days, installation 15–30 days; includes airtightness test and gas concentration commissioning
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