Executive Summary: Tan Long Cold Storage EPC Services
Tan Long Refrigeration Electrical Engineering Joint Stock Company is an industrial HVACR turnkey EPC contractor established in 2005, operating advanced manufacturing facilities for refrigeration machinery and insulated panels in Duc Hoa 1 IP, Long An. We deliver complete turnkey solutions:
- Project Scale: From compact commercial mini cool rooms (8m³) to mega cold chain logistics complexes exceeding 20,000 tons.
- Operating Temperature Ranges: Cool storage (+2°C to +15°C), frozen storage (-18°C to -25°C), blast freezers (-35°C to -45°C), and cryogenic deep-freeze chambers (-50°C to -60°C).
- Operational Efficiency: 18% to 25% recurring monthly electricity savings via VFD inverter technology and 304 stainless evaporative condensers.
- Manufacturer Warranty: 24 months comprehensive warranty, with emergency technical response on-site within 2 hours.
1. Classification of Industrial Cold Storage Systems by Industry
Every food processing and warehousing sector has unique preservation parameters regarding temperature ranges, relative humidity, air velocity, and atmospheric composition. With over 20 years of engineering experience, Tan Long classifies cold storage solutions as follows:
a. Agricultural Cool Storage for Fruits and Vegetables (+2°C to +12°C)
Preserving fresh produce demands concurrent control of temperature and relative humidity (RH 85% to 95%) to prevent moisture loss, weight shrink, and shriveling. Gentle low-velocity air coolers combined with Controlled Atmosphere (CA) systems and ethylene (C2H4) scrubbers keep stems of dragon fruit, mangoes, durian, and pomelo fresh throughout 45 to 60-day export transit.
b. Frozen Storage for Seafood, Poultry, and Red Meat (-18°C to -25°C)
A vital link in Vietnam seafood export supply chains (whiteleg shrimp, pangasius fillets, squid, octopus). Core product temperature must be maintained strictly below -18°C. Tan Long utilizes 125mm - 150mm Camlock PIR sandwich panel enclosures, with all hanging brackets and hardware crafted from SUS304 stainless steel to resist marine salt corrosion.
c. Ultra-Rapid Air Blast Freezers (-35°C to -45°C)
Engineered to reduce core product temperature from ambient (+25°C) down below -18°C in under 4 to 6 hours. High-velocity forced air circulation (5 - 7 m/s) across evaporator coils forms microscopic ice crystals that do not rupture cell membranes, eliminating drip loss and preserving natural sweetness upon thawing.
d. Ultra-Low Cryogenic Cold Storage (-50°C to -60°C)
Dedicated to sashimi-grade oceanic tuna exports to Japan and bio-specimens, vaccines, and plasma in pharmaceutical healthcare. The refrigeration system utilizes two-stage compound compressors or cascade refrigeration systems running R23/R404A or NH3/CO2.
2. Core Technical Standards for European-Grade Cold Storage Construction
An industrial cold storage facility operating durably for 20 to 25 years must satisfy five fundamental engineering pillars:
| Engineering Category | Conventional Construction Standard | Tan Long Premium Standard (EU & HACCP) | Delivered Performance |
|---|---|---|---|
| Envelope Insulation Core | Standard EPS foam or manual PU pour | Continuous PIR sandwich panels (42-45 kg/m³) | 35% superior thermal performance, B1/B2 fire-rated |
| Inter-panel Joint System | Standard tongue & groove with silicone screws | Pre-cast internal dual male-female Camlock latches | 99.9% airtight, 100% dismantlable and reusable |
| Subfloor Foundation Engineering | Direct slab casting on polyethylene sheeting | Ø114mm convective ventilation piping + 500 kPa compressive XPS | Permanently eliminates frost heave and floor cracking |
| Compressor Rack System | Refurbished second-hand piston units without inverters | 100% new Bitzer/Mycom screw compressors + VFD inverter | Smooth running, 25% electricity bill savings |
| Heat Rejection Equipment | Standard outdoor air-cooled condensing units | Tan Long 304 Stainless Evaporative Condensers | Lowers condensing temp to 32°C, 25+ year lifespan |
| Evaporator Defrosting Protocol | Electric resistance heaters with mechanical timers | Hot Gas bypass defrosting with Delta P sensors | Eliminates 100% electric heating energy, clears frost in 12 mins |
3. 6-Phase Standard Turnkey EPC Installation Protocol by Tan Long
Every cold storage project executed by Tan Long adheres strictly to ISO 9001:2015 quality management through 6 closed phases:
01
Phase 1: Geological Survey & Frost-Heave Foundation Design
Geological core drilling, reinforced concrete foundation engineering. Installing staggered natural convective Ø114mm ventilation ducts pitched 1-2% for drainage or laying automated electric heating cables to prevent soil freezing.
02
Phase 2: Off-Site Factory Fabrication of PIR Panels & Steel Framing
Fabricating high-density 42-45 kg/m³ PIR panels with pre-cast Camlock fasteners at Duc Hoa 1 IP plant per precise BIM dimensions, inspecting surface finishes before protective PE wrapping and transport.
03
Phase 3: Airtight Enclosure Erection & T-Light Cold Room Doors
Anchor extruded aluminum U-channels, erect wall and ceiling panels using SS304 suspended threaded rods, torque Camlock fasteners with specialized hex keys, inject polyurethane expanding foam into corner voids, and seal all seams with HACCP-compliant anti-fungal neutral silicone sealant.
04
Screw Compressor Package & Evaporator Installation
Mounting Bitzer/Mycom compressor skids on spring vibration isolators, suspending forced-convection unit coolers, fitting SCH40 seamless steel refrigerant piping, and insulating lines with closed-cell Armaflex preventing condensation sweating.
05
28-Bar Nitrogen Pressure Testing & Deep Vacuum Dehydration
Pressurizing systems with dry nitrogen to 28 bar for a continuous 24-hour soak test ensuring 100% leak-free joints, followed by two-stage deep vacuum evacuation below 500 microns to completely eliminate moisture.
06
Refrigerant Charging, PID Tuning & 72-Hour Full Load Commissioning
Weighing in precise refrigerant charges, fine-tuning electronic expansion valves, verifying motor current loads, and executing a continuous 72-hour full thermal load test. Handing over commissioning logs and comprehensive operator training.
d. DIN-Standard Nitrogen Pressure Testing, Deep Vacuum & Refrigerant Charging Protocol
An industrial refrigeration system—regardless of Bitzer or Mayekawa compressor quality—will suffer premature failure if pipe fitting lacks absolute airtightness and purity. Tan Long enforces a rigorous 3-stage mechanical testing protocol adhering to German DIN standards:
- 3-Stage Dry Nitrogen Leak & Pressure Testing: Stage 1 (5 bar) bubble leak detection across all welds and flanges; Stage 2 (15 bar) mechanical integrity testing on valves and fittings; Stage 3 (25 - 28 bar) continuous 24-hour holding test with ambient temperature compensation. Permissible pressure drift <= 0.05 bar.
- Deep Vacuum Dehydration (Triple Evacuation Protocol): Utilizing high-capacity two-stage rotary vane vacuum pumps monitored by digital electronic micron gauges. Evacuating the system below an absolute vacuum of 500 microns (0.5 Torr) and holding for 4 hours to vaporize and extract all residual microscopic moisture.
- Precision Refrigerant Charging via Digital Scales: Charging liquid refrigerant through high-pressure receiver service valves per design calculations, ensuring exact refrigerant charge for maximum evaporator efficiency without compressor liquid flooding.
- 72-Hour Continuous Full-Load Commissioning Protocol: Verifying running amperage, oil temperatures, bearing vibration spectrums, and room pull-down curves to design thresholds before official commercial handover.
4. Comprehensive Comparison: New Turnkey Investment vs. Used Liquidation Rooms
Tan Long Turnkey New Facility Investment
- 100% Virgin Insulated Panels: 42 kg/m³ density Camlock PIR panels, delivering flawless thermal retention for 20+ years with zero moisture ingress.
- Genuine OEM Compressors: 100% factory-new Bitzer/Mycom screw packages with VFD inverter control cutting power bills by 25%.
- 24-Month Factory Warranty: On-site emergency response within 2 hours, lifetime engineering support.
- Regulatory & Export Compliance: 100% compliant with fire safety permits and international HACCP, ISO 22000, and US FDA food hygiene standards.
Hidden Costs & Operational Risks of Used Cold Rooms
- Degraded, Waterlogged Panels: Aged panels suffer delamination and moisture uptake, losing 40-50% of thermal resistance and provoking chronic floor sweating.
- Multiple-Overhaul Compressors: Worn rotors and pistons cause mechanical lockups and gas leaks; monthly electricity draw is 1.5x higher.
- Catastrophic Cargo Spoilage: Sudden equipment burnout ruins high-value inventory worth billions of VND without warranty or insurance recourse.
- Zero Warranty Backing: Liquidators provide no warranties; piecemeal repair and servicing costs within 1 year exceed the cost of a new facility.
5. Tan Long EPC General Contractor Capabilities & Portfolio
Over two decades of industry leadership in industrial refrigeration across Vietnam, Tan Long possesses:
- Advanced Manufacturing Base at Duc Hoa 1 Industrial Park, Long An: Spanning 10,000+ m² with automated continuous PIR panel lines, SUS304 evaporative condenser fabrication bays, ASME pressure vessel workshops, and PLC automation panel assembly.
- Seasoned Engineering & Technical Workforce: Over 50 senior refrigeration engineers graduated from leading technical universities alongside 120+ certified electromechanical erection technicians.
- Clients & Featured Project Showcase: Trusted EPC general contractor for major industry flagships: Meito Logistics Vietnam, Lotte Cold Logistics, Vinh Hoan Seafood, Minh Phu Seafood, CP Group, Masan Nutri-Science...
6. 2026 Representative Turnkey Cold Storage Budget Estimates
| Cold Room Type & Temperature | Sample Dimensions (LxWxH) | Volume | Storage Capacity | Compressor Power | Estimated Turnkey Price |
|---|---|---|---|---|---|
| Walk-in Mini Cool Room (+2°C ~ +8°C) | 2.0m x 2.0m x 2.2m | 8.8 m³ | 1.5 - 2 metric tons | 1.5 HP (220V) | 45,000,000 - 52,000,000 VND |
| Agricultural Produce Cool Room (+2°C ~ +8°C) | 6.0m x 4.0m x 3.0m | 72.0 m³ | 15 - 20 metric tons | 7.5 HP (380V) | 140,000,000 - 165,000,000 VND |
| Walk-in Mini Freezer (-18°C ~ -22°C) | 2.5m x 2.0m x 2.2m | 11.0 m³ | 2 - 3 metric tons | 3.0 HP (Sub-zero scroll) | 68,000,000 - 78,000,000 VND |
| Seafood Cold Storage (-18°C ~ -25°C) | 8.0m x 5.0m x 3.5m | 140.0 m³ | 35 - 45 metric tons | 15.0 HP (Industrial screw) | 280,000,000 - 320,000,000 VND |
| Export Freezer Warehouse (-18°C ~ -25°C) | 12.0m x 8.0m x 4.0m | 384.0 m³ | 100 - 120 metric tons | 30.0 HP (Dual screw package) | 520,000,000 - 580,000,000 VND |
| Mega Cold Chain Logistics Facility | > 2.000 m³ | > 2.000 m³ | > 500 metric tons | Centralized NH3/Freon plant | Custom EPC engineering budget |
Service Scope & Regional Technical Hubs
Nationwide Installation Network & Regional Technical Hubs
With HCMC headquarters, Long An manufacturing base, and engineering teams stationed across key economic corridors, Tan Long delivers turnkey EPC design, construction, and 24/7 emergency response across all 63 provinces.
Headquarters & Key Industrial Hub
Ho Chi Minh City & Southeast Economic Corridor
- Territory: Ho Chi Minh City, Binh Duong, Dong Nai, Ba Ria - Vung Tau, Tay Ninh, Binh Phuoc.
- Key Industrial Parks: Tan Binh, Vinh Loc, Hiep Phuoc, VSIP 1-2, Song Than, Amata, Nhon Trach, Cai Mep Port Industrial Parks.
- Flagship Projects: Chilled food logistics centers (+2°C to +8°C), retail supermarket distribution centers, imported beef/poultry freezers (-20°C).
- Engineering Attributes: Heavy-load concrete floor for 5-10 ton forklifts, high-speed automated PVC roll-up doors, integrated IoT SCADA telemetry.
Emergency Response: 30 - 60 minutes within HCMC (1 - 2 hours interprovincial)
Manufacturing & Mekong Delta Seafood Hub
Long An & Mekong River Delta
- Territory: Long An, Tien Giang, Ben Tre, Dong Thap, Can Tho, Hau Giang, Soc Trang, Bac Lieu, Ca Mau, Kien Giang, An Giang.
- Key Industrial Parks: Long Hau, Duc Hoa 1, Thuan Dao, My Tho, Tra Noc Can Tho, Song Hau, Hoa Trung Ca Mau.
- Flagship Projects: Continuous shrimp/pangasius IQF freezers, 30,000-pallet mega commercial cold stores (NECS, AJ Total), export fruit storage.
- Engineering Attributes: Soft alluvial ground improvement with spun piles, underfloor glycol ventilation preventing frost heave, coastal-grade condensing.
24/7 Technical Response Stations in Can Tho & Ca Mau (On-site within 1 - 3 hours)
Central Coast Marine & Central Highlands Agriculture
Central Coastal Region & Central Highlands
- Territory: Da Nang, Quang Nam, Quang Ngai, Binh Dinh, Phu Yen, Khanh Hoa, Ninh Thuan, Binh Thuan, Lam Dong, Dak Lak.
- Key Industrial Parks: Hoa Khanh Da Nang, Chu Lai, Phu Tai Quy Nhon, Suoi Dau Nha Trang, Da Lat, Buon Ma Thuot Industrial Parks.
- Flagship Projects: Ocean tuna ultra-low blast freezing (-35°C to -60°C), offshore marine flake ice skids, controlled atmosphere (CA) floral & fruit storage.
- Engineering Attributes: SUS304 evaporative condensers resisting C5M marine corrosion, Mycom/Bitzer industrial screw packages built for severe climates.
Regional Technical Hubs in Da Nang & Khanh Hoa (On-site within 2 - 4 hours)
Northern Logistics & Pharmaceutical Hub
Hanoi & Northern Industrial Economic Zone
- Territory: Hanoi, Hai Phong, Bac Ninh, Hung Yen, Hai Duong, Ha Nam, Vinh Phuc, Quang Ninh.
- Key Industrial Parks: Quang Minh, Noi Bai, Yen Phong, VSIP Bac Ninh, Pho Noi A/B, Dinh Vu Hai Phong, Dong Van Ha Nam Industrial Parks.
- Flagship Projects: GSP-compliant pharmaceutical/vaccine cold rooms (+2°C to +8°C), cross-border trade agricultural transit hubs, F&B restaurant supply chains.
- Engineering Attributes: Four-season thermodynamic balancing (40°C humid summer vs dry cold winter), automated hot gas defrost preventing coil freeze-up.
Engineering Office Hanoi (Survey & technical support within 2 - 4 hours)
7. Frequently Asked Questions (FAQs) on Cold Storage Installation
What is the turnkey cost to build an industrial cold storage facility?
Turnkey construction cost depends on chamber volume (m³), cargo tonnage, and specified temperature envelope. Chilled rooms for produce (0°C to +10°C) range from 45,000,000 VND (mini 8m³ room) to ~250,000,000 VND (200m³ room). Meanwhile, sub-zero freezers for seafood (-18°C to -25°C) range from 68,000,000 VND to over 500,000,000 VND due to heavy-gauge 125-150mm PIR/PU panels and 40% higher compressor displacement.
What is the project turnaround time for turnkey cold storage delivery?
Through direct panel manufacturing and skid preassembly at Tan Long Duc Hoa 1 factory, installation schedules are compressed by 30%: Mini and small cold rooms (< 100 tons) require 7 to 15 days; Medium storage facilities (100 - 1,000 tons) take 20 to 35 days; Large-scale cold logistics hubs (2,000 - 15,000 tons) are commissioned within 45 to 75 days.
Does Tan Long execute full turnkey EPC contracts from civil foundations to refrigeration plants?
Yes. Tan Long is a fully licensed Turnkey EPC Contractor (Engineering - Procurement - Construction) overseeing: Geological surveys, anti-frost-heave foundation design, pre-engineered steel buildings, panel envelope manufacturing, central compressor skid prefabrication, power distribution, and PLC/SCADA automation.
Do cold storage facilities built by Tan Long qualify for HACCP, ISO 22000, and US FDA approvals?
100% of materials and construction methodologies strictly comply with international standards: Antimicrobial Clean Colorbond or SUS304 panel facings, R50 coved sanitary corners eliminating bacterial traps, deep-seal insect-proof floor drains, IP65 LED cold luminaires, and 21 CFR Part 11 automated temperature telemetry fully meeting HACCP, ISO 22000, and US FDA export criteria for the USA, Japan, and EU.
What is frost heave and how does Tan Long prevent it in sub-zero freezers?
Frost heave occurs when sub-zero temperatures (-20°C) migrate through concrete floor slabs into subsoil over months, freezing groundwater into ice lenses that expand and heave the floor upwards, destroying slabs. Tan Long deploys European-standard anti-heave systems: Staggered Ø114mm natural ground ventilation conduits coupled with 500 kPa compressive XPS insulation, or automated subfloor electric/glycol heating grids.
Which compressor brands are recommended for industrial cold storage?
Tan Long specifies world-class industrial compressors with design lifespans exceeding 15-20 years: Bitzer (Germany), Mycom/Mayekawa (Japan), Kobelco (Japan) industrial screws, or Copeland scroll condensing units (USA). We guarantee 100% factory-new equipment with verified CO and CQ certificates, strictly rejecting refurbished units.
How effective are Tan Long's energy conservation engineering solutions?
Tan Long installations cut monthly electricity bills by 18% to 25% via 4 synchronized technologies: VFD inverter stepless screw compressor modulation, SUS304 evaporative condensers depressing condensing temperatures to 32-34°C, hot gas defrost eliminating electric defrost heaters, and 150mm PU sliding doors paired with high-speed PVC doors preventing thermal leakage.
What is Tan Long's post-commissioning warranty and maintenance policy?
Tan Long provides a 24-Month Comprehensive Factory Warranty covering all envelope and machinery systems. Complimentary preventative maintenance audits are performed every 3 months. Furthermore, our 24/7 emergency dispatch teams arrive on-site within 2 hours across HCMC, Long An, Binh Duong, Dong Nai, Tien Giang, and Can Tho.
Does cold storage construction require building permits and statutory fire safety approvals?
Industrial-scale projects (newly constructed sheds) legally require municipal construction permits and certified fire safety appraisals. Tan Long B1/B2 fire-rated PIR panels comply with QCVN 06:2022/BXD regulations. Tan Long engineers prepare complete technical engineering dossiers and P&ID drawings for expedited statutory fire approvals.
Is purchasing second-hand liquidation cold rooms advisable to save upfront costs?
Procuring second-hand rooms poses immense risks: Degraded waterlogged panels lose 50% of thermal resistance; overhauled compressors consume 30-50% more electricity, suffer chronic refrigerant leaks, and risk sudden burnouts destroying billions of VND in inventory. Repair costs and power waste within 1 year routinely exceed the cost of a new turnkey installation.
What panel insulation thickness is standard for different cold storage chambers?
Panel thickness is calculated from indoor-outdoor temperature differentials: Chilled rooms (0°C to +10°C) utilize 75mm - 100mm EPS/PIR; Freezers (-18°C to -25°C) mandate 125mm - 150mm PU/PIR; Blast freezers (-35°C to -45°C) require 175mm - 200mm Camlock PIR panels.
Does industrial cold storage operate on 220V single-phase or 380V 3-phase power?
Mini cold rooms under 15m³ (< 3 HP) can operate on 220V single-phase power. However, industrial facilities with 5 HP+ compressor motors strictly require 380V 3-phase industrial power to ensure motor balance, high operating efficiency, and avoid line voltage drops.
How significant is doorway heat loss during logistics handling and how is it mitigated?
Doorway thermal infiltration represents 25-30% of facility heat load. Tan Long neutralizes this via: Controlled ante-room buffer zones (10-15°C), 1.5m/s high-speed automated PVC doors paired with synchronized air curtains, and inflatable dock seals hugging container trailers during loading.
Does Tan Long provide remote smartphone temperature monitoring and telemetry?
Yes. All Tan Long industrial cold stores include smart PLC control panels with 4G/WiFi cloud telemetry. Facility managers monitor real-time temperatures, humidity, and compressor amperage on smartphones, with automated voice call and SMS alerts triggering upon temperature excursions.
What is the milestone payment schedule when executing a construction contract with Tan Long?
Disbursements follow 4 flexible milestone stages: Milestone 1 (30% advance on contract signing and shop drawing approval for factory panel fabrication); Milestone 2 (40% upon job-site delivery of panels and machinery); Milestone 3 (25% upon mechanical erection, evacuation, charging, and full-load trial runs); Milestone 4 (5% retention upon formal commissioning acceptance and warranty issuance).
