Urumqi Badianban Convenience Store Group 15,000m³ Dual-Temp Supermarket Distribution Cold Storage EPC Case

Project Overview

This full turnkey dual-temperature distribution cold storage is built for Badianban Convenience Store Group, Xinjiang’s top local chain retail enterprise, serving as the group’s central cold distribution hub covering over 600 community convenience stores and 14 fresh supermarkets across Urumqi.

Urumqi belongs to severe cold climate zone, extreme winter low temperature reaches -25℃, day-night temperature difference up to 40℃, heavy snow in winter; this project adopts exclusive anti-freezing, anti-condensation and snow load reinforcement design complying with GB 50072-2021 severe cold area clauses.

Core Basic Project Information

• Client: Badianban Convenience Store Group (Xinjiang Top 30 Chain Retailer, annual turnover over 700 million RMB)
• Total effective volume: 15,000 m³ | Floor area: 2,000 ㎡ | Clear height: 7.5 m
• Dual independent isolated cold zones:
  1. 0–5℃ Fresh Zone (7,500 m³): Fruits, vegetables, dairy, fresh ready meals
  2. -18℃ Frozen Zone (7,500 m³): Frozen meat, seafood, quick-frozen hot pot ingredients
• Completion & handover: June 2020
• Local climate design background: Winter extreme -25℃, summer peak ambient 36℃, large snowfall season

Pre-Construction Core Pain Points Of The Group

1. Original scattered small temporary cold rooms without unified distribution, seasonal fruit & vegetable spoilage loss up to 13% annually;
2. Ordinary cold storage scheme imported from inland without severe cold anti-freezing design, winter condenser easy icing, unit downtime frequent;
3. No centralized sorting buffer hall, daily cross-store delivery labor cost high, order fulfillment efficiency low;
4. Discrete manual temperature recording, unable to meet local market food safety regular inspection traceability requirements;
5. Original warehouse without snow load reinforcement, roof hidden collapse risk in heavy snow winter.

1 Severe Cold Area Exclusive Envelope & Ground Anti-Frost Design (GB 50072 Compliant)

1.1 PU Insulation Panel Differentiated Matching

Zone Type	Panel Spec	Severe Cold Custom Optimization
0–5℃ Fresh Chiller	100mm B1 flame-retardant double color steel PUR	Double-layer full vapor barrier on roof & exterior wall to block large temperature difference moisture penetration
-18℃ Frozen Zone	150mm B1 high-density PUR	Extra snow load reinforced steel keel roof structure, bearing 0.8kN/m² snow pressure

All wall, floor, column joints filled with low-temperature resistant closed-cell sealant to cut off cold bridge completely.

1.2 Mandatory Anti-Frost Heave Ground System (Xinjiang Core Unique Design)

1. Four layers staggered 50mm XPS anti-freeze insulation board + upper & lower double HDPE vapor barrier;
2. Underground mechanical ventilation anti-frost pipeline network laid under insulation layer, comply with GB 50072 ground anti-freeze clause;

Concrete floor anti-freeze grade F200, wear-resistant anti-slip finish for frequent forklift turnover.

1.3 Cold Door & Access Anti-Icing Design

All cold sliding doors adopt heating wire embedded frame to prevent seal strip freezing in -25℃ winter; loading dock equipped full-length air curtain with low-temperature resistant heating function, avoid hot & cold air mixing leading to massive frost accumulation.

2 Redundant Refrigeration System Adapted To Urumqi Severe Winter

Full Equipment Configuration

• Compressor Unit: Taiwan Hanbell parallel screw rack, 1 set duty + 1 standby for each temperature zone;
• Evaporator: Low-speed anti-frost ceiling air coolers matched per zone;

Condenser: Outdoor unit equipped winter automatic defrost cycle, heating belt wrapped on all liquid pipelines to avoid icing blockage.

Severe Cold Optimization Highlights

1. Independent outdoor equipment room with heat preservation enclosure, prevent compressor oil viscosity rise under -25℃;
2. Hot gas circulating defrost only, prohibit electric heating defrost to reduce fire risk in dry cold climate;
3. PLC automatic load adjustment according outdoor winter temperature, avoid unit overload startup in early morning low temperature.

3 Siemens Full Intelligent Temperature Monitoring & WMS System

1. Core Hardware: Siemens main PLC + Schneider full low-temperature resistant electrical components;
2. Core Compliance Functions:
   • Real-time PC & mobile APP remote 24h monitoring;
   • 5-year non-editable temperature & door opening log for food safety inspection;
   • Multi-layer SMS + local sound-light over-limit alarm;
   • Automatic standby unit switch when main machine fails;
   • Winter anti-icing equipment linkage control logic.

4 Supermarket Exclusive Logistics Buffer & Loading Dock Layout

Unique design for daily 600-store batch sorting:
1. Independent 12℃ constant temperature sorting buffer hall between fresh & frozen zone, avoid direct temperature fluctuation during goods transfer;
2. 4 sets hydraulic lifting cold-proof loading docks with air curtain heating system;
3. One-way inbound-sorting-outbound circulation line, no cross traffic of raw and cooked food, meet local food market HACCP requirements;
4. High-density pallet rack layout, full load capacity over 1,800 tons mixed fresh & frozen goods.

5 Measurable Post-Operation 3-Year Stable Operation Benefits

1. Centralized unified distribution cuts cross-store delivery labor & fuel cost by 28% annually;
2. Standard constant temperature storage reduces fruit & vegetable spoilage loss from 13% down to below 3.2%;
3. Severe cold anti-freezing design eliminates winter unit frequent shutdown failure, annual maintenance cost reduced by 31%;
4. Full digital temperature record system passes all municipal food safety inspection without rectification;
5. Warehouse full capacity supports group expansion target to 1,000 chain stores.

6 6 Common Severe Cold Xinjiang Cold Storage Construction Pitfalls

1. Adopt inland ordinary ground without anti-frost ventilation pipe → Soil frost heave crack floor after one winter
2. Omit heating wire on cold door frame → Seal strip freeze solid, massive cold air leakage
3. Single compressor without standby unit → Winter icing shutdown leads batch goods loss
4. Single-layer vapor barrier on roof → Wall large-area condensation in spring temperature rise
5. No snow load reinforced roof → Heavy snow collapse hidden danger
6. Simplify sorting buffer hall → Frequent temperature fluctuation accelerate fresh food rot

7 FAQ For Xinjiang Supermarket & Agricultural Cold Chain Investors

Q1 What ground design is mandatory for Urumqi -18℃ frozen warehouse?

A Must lay underground mechanical ventilation anti-frost pipeline + double-layer XPS insulation, comply GB 50072 severe cold ground anti-frost specification to prevent foundation frost heave cracking.

Q2 Why cold door frame needs embedded heating wire in Xinjiang?

A Winter ambient -25℃ will freeze door rubber seal completely, causing permanent cold leakage without heating anti-icing design.

Q3 How much storage tonnage can 15,000m³ dual-temperature supermarket warehouse hold?

After deducting sorting aisle & air cooler space, total effective pallet storage capacity reaches 1,800 tons of mixed fresh and frozen food.

Q4 What’s the core difference between Xinjiang cold storage and inland ordinary warehouse?

Xinjiang projects must add snow load roof reinforcement, ground anti-frost pipeline, pipeline heating belt, door frame anti-icing heating and double-layer full vapor barrier structure.

Custom Northwest Severe Cold Dual-Temp Distribution Cold Storage Inquiry

If you plan to build supermarket, agricultural dual-temperature cold warehouse in Urumqi, Kashgar and other Xinjiang severe cold areas, provide warehouse volume and daily store distribution volume to get free anti-frost layout drawing & full turnkey quotation.

Construction & Completion Photos