Air Blast Tunnel Freezers It is the optimal rapid freezing solution in industrial refrigeration systems, playing a key role in preserving the freshness and nutritional value of food and seafood. With over 20 years of practical experience, Tan Long We are proud to offer high-quality, energy-efficient, and durable blast freezers. Discover the details of their structure, operating principles, and professional blast freezer construction process in the article below.
TECHNICAL DESCRIPTION OF WIND TUNNEL
What is a wind tunnel?
Air Blast Tunnel Freezers (Blast Freezer Tunnel) is a specialized variant of industrial cold storageThis system is designed to lower product temperatures to extremely low levels in the shortest possible time. It utilizes high-powered fan clusters to create a high-speed, forced-convection cold air flow that directly impacts the product surface.
Thanks to its ultra-fast freezing capability, wind tunnel This helps prevent the formation of large ice crystals inside cells, thereby preserving the flavor, freshness, and nutritional value of food for export or long-term storage.
Outstanding technical characteristics of Tan Long wind tunnel
The air-cooled freezing system at Tan Long has been optimized by our team of engineers based on practical construction experience in Vietnam, offering several competitive advantages:
- Diverse applications: Efficient freezing for agricultural products (vegetables arranged in trays), seafood (shrimp, fish balls), meat, and processed foods.
- The product quality is excellent: The natural structure is maintained thanks to the stable, deep-freeze temperature range provided by the system. refrigeration compressor Genuine imported product.
- Optimizing operating costs: Extremely high heat exchange efficiency from industrial refrigeration This helps shorten freezing time and significantly saves on electricity consumption.
- Strict hygiene standards: Standard design HACCP/FDAThe basement floor and lining are constructed from high-density PU panels, which are easy to clean and resistant to dirt and stains.
- Intelligent control technology: Integration PLC control cabinet It helps monitor temperature and operate automatically with absolute precision.
- Power customization: Tan Long provides consulting services to design production capacity according to the actual requirements of each factory (from 500kg to tens of tons per batch).
Operating principle of a blast freezer
The products requiring freezing are arranged evenly on trays and placed on specialized trolleys. These trolleys are then transported into the freezing chamber in batches.
Here, wind tunnel It operates on the principle of forced convection:
- The cold air from the air conditioner is powerfully blown by the fan to the far end of the room.
- The baffle system directs the airflow evenly through each layer of the trays.
- Thousands of ultra-low temperature jets continuously make contact, breaking down the thermal film surrounding the surface, allowing the cold to penetrate deep into the product's core temperature.
Once the core temperature of the product reaches the required temperature (usually -18°C or lower), the freezing process is complete. The product will then be removed from the tray and transferred to the freezer. cold storage To maintain quality before distribution to the market.

Structure of the Tan Long wind tunnel
To achieve ultra-fast freezing performance and optimize energy consumption, the system wind tunnel At Tan Long, the equipment and materials used are of international quality standards.
PU Enclosure and Insulation Panel
The outer casing acts as a "shield" to prevent heat loss. wind tunnelAt Tan Long, we use high-density PU (Polyurethane) panels, manufactured using high-pressure spraying machines, ensuring uniformity and absolute thermal insulation.
- Specifications: Panel thickness is 125mm, density is 40-42kg/m3.
- Surface material:
- Wall and ceiling panels: The inner and outer surfaces are covered with SUS 304 stainless steel (0.6mm – 0.8mm thick), specifically designed for the food industry, and have an anti-scratch adhesive film.
- Background panel: Specifically, 1.2mm thick SUS 304 stainless steel is used on the top surface to withstand the weight of cargo vehicles. The floor is welded shut and designed with an optimal slope to ensure thorough drainage during industrial cold storage cleaning.
Specialized freezer door system
Unlike ordinary doors, doors wind tunnel Tan Long offers a line of 100mm thick insulated sliding doors, minimizing heat loss during entry and exit from businesses.
- Key features: Both sides are covered with SUS 304 stainless steel, using silicone gaskets for excellent sealing.
- Safety: Equipped with an anti-frost heating element and a safety locking mechanism to prevent occupants from being trapped inside – a mandatory EEAT standard in workplace safety.
- Accessory: All hinges and handles are imported directly from Europe, ensuring durability in extremely low-temperature environments. You can also check out other models. cold storage door High-end here.
High-performance industrial refrigeration units
Heart of wind tunnel This is the evaporator (cooling coil). We calculate the cooling coil capacity based on the characteristics of each product type to ensure the fastest freezing time.
- Prestigious brand: Tan Long uses air conditioning units from reputable EU brands such as Guntner, Thermofin, Kelvion.
- Structure: Copper or stainless steel heat exchanger tubes combined with aluminum fins optimize heat transfer. This system is often combined with a high-capacity screw compressor unit to maintain a stable temperature range.
High-capacity indoor unit fan system
In the operating principle of wind tunnelAir flow rate is the determining factor.
- Fan blades: Made from high-performance aluminum alloys from reputable manufacturers. Ziehl-Abegg or Rosenberg (Germany).
- Engine: Meets standards IP56It is covered with a special protective coating to ensure durable operation at extremely low temperatures without seizing up or short-circuiting.
Shelf and tray system for storing products.
To allow the cold air stream to come into contact with the product surface, the internal support system wind tunnel It is designed in an extremely scientific way:
- Material: Made entirely of stainless steel or corrosion-resistant steel, ensuring food safety and hygiene.
- Airflow design: The gaps between the tray layers are precisely calculated to create openings for cold air to pass through the center of the product, minimizing freezing time.
Standard specifications for blast freezers
To give our customers an overview of the system's operational capabilities, Tan Long provides a detailed technical specifications table for the system. wind tunnel industrial. These parameters can be customized based on actual needs and the specific characteristics of each product type.
| Specifications | Technical details |
| Frozen products | Shrimp, fish, meat, processed foods, and agricultural products for export. |
| Product core temperature (In/Out) | Enter: +10°C Go out: -18°C (Ensure deep freezing standards are met). |
| Temperature of the blast freezer chamber | Maintain stability from -33°C to -35°C. |
| Refrigerant evaporation temperature | Design at the level -40°C to optimize heat exchange rate. |
| Refrigerant used | Gas NH3 (optimized for large systems) or R22 (flexible). |
| Translation method | Use Fluid pump (Pump system) helps to increase cooling efficiency significantly. |
| Defrosting method | Flush with waterThis helps to clean the air conditioner coil quickly and effectively. |
| Control system | Integrated PLC control panel for 24/7 automatic monitoring. |
The design wind tunnel Achieving extremely low evaporation temperatures (-40°C) combined with the liquid pumping method is the secret to Tan Long's leading performance. This not only shortens freezing time but also helps the business:
- Reduce weight loss: The faster the freezing process, the less the product loses moisture.
- Energy saving: The refrigeration compressor system operates in optimal mode, reducing wasted running time.
- Maintain equipment lifespan: With a water-based defrosting method and an EU-standard industrial refrigeration system, the system always operates in the cleanest and most ventilated state.
If you require a customized design with specific parameters for your cold storage or freezer installation project, please contact Tan Long's engineering team for assistance in calculating the most accurate thermal energy.
The outstanding advantages of blast freezers in the refrigeration industry.
Application wind tunnel Integrating this system into the production process brings practical benefits, not only optimizing time but also significantly increasing the commercial value for businesses. Compared to conventional refrigeration methods, this system demonstrates clear superiority thanks to its ultra-fast freezing capability and the preservation of the product's physical and chemical properties. At Tan Long, we optimize every technical detail to ensure the equipment achieves the highest efficiency.
Here are the top advantages that make wind tunnel It has become the preferred choice in food and seafood processing plants today:
- The effectiveness of ultra-fast freezing: The system uses high-speed, high-flow fans to push a stream of cold air directly onto the product surface. This helps lower the core temperature of the product to extremely low levels (-18°C to -40°C) in a short time, preventing the formation of large ice crystals and thus preserving the original cellular structure and flavor.
- Maximizing product quality preservation: Thanks to its rapid cooling speed, wind tunnel This process minimizes surface water loss, preventing the product from drying out or losing weight. Simultaneously, it helps to "lock in" the nutrients, vitamins, and minerals within the food.
- Ensuring food hygiene and safety: The ultra-low temperature environment effectively inhibits and destroys the growth of bacteria and mold. Combined with a cold storage shell system made of PU panels and airtight cold storage doors, the production process always ensures compliance with HACCP and FDA standards.
Besides quality, flexibility and economic efficiency are also important reasons for businesses to invest in this system. Each project wind tunnel All projects implemented by Tan Long are calculated based on the operating costs and future scalability of the client.
- Flexible in design and operation: Depending on the floor space and product characteristics (shrimp, fish, meat, or vegetables), the digester can be designed with customized dimensions and capacity. Short batch operating times (typically 2-8 hours) help businesses speed up the flow of goods in the supply chain.
- Energy saving and cost optimization: With the synchronized combination of imported refrigeration compressors and high-efficiency industrial evaporators, the system minimizes heat loss. The optimized design reduces energy consumption, thereby increasing overall productivity and shortening the payback period for investors.
The combination of modern technology and Tan Long's more than 20 years of construction experience ensures that every system wind tunnel Not only are they durable, but they are also powerful tools that help businesses establish a reputation for product quality in the international market.
Practical applications of blast freezers in diverse industries.
Thanks to its ultra-fast freezing technology and ability to maintain a stable range of extremely low temperatures, wind tunnel It has become an indispensable piece of equipment in the operational processes of many large-scale manufacturing and processing businesses today. Beyond simple preservation, this system plays a crucial role in maintaining a standardized cold chain supply, enhancing the value of products for both domestic and export markets. In particular, when designed in conjunction with genuine industrial refrigeration compressors and evaporators, freezing efficiency is optimized to the highest level, helping businesses significantly reduce operating costs.
Currently, the system wind tunnel Tan Long's products are widely applied and deliver outstanding results in key areas including:
- Seafood processing industry: This is the most common application, used for rapid freezing of fresh shrimp, fish, squid, and seafood to lock in freshness and prevent bacterial contamination before long-term storage in cold storage.
- Food and livestock industry: Used to preserve frozen meats, poultry, pre-processed foods, or ready-to-eat processed foods while maintaining their cellular structure and natural color.
- Agricultural and vegetable production: Rapid heat treatment for export fruits (such as durian and mango), vegetables, and mushrooms helps prevent wilting and preserves their freshly harvested flavor.
- Pharmaceutical and healthcare sector: Freezing and preserving vaccines, medical biological products, pharmaceuticals, and specialized medications requires an environment with extremely low and absolutely stable temperatures.
- Ice cream and confectionery industry: It supports the ultra-fast cream hardening process and preserves dairy products, ensuring a consistently smooth texture without separation.
With over 20 years of experience in consulting and installing industrial refrigeration systems, Tan Long is committed to providing solutions. wind tunnel It is flexibly customized to the specific characteristics of each product type. The combination of high-density PU panel housing and a PLC control system allows this equipment to thoroughly solve the problem of preserving large quantities for businesses. For customers needing advice on deep freezing solutions, please contact our engineering team immediately to receive the most optimal technical plan and price quote.
Tan Long – A leading and reputable company for consulting, designing, and installing blast furnaces.
If your company is looking for a solution provider partner. wind tunnel For genuine, customizable capacity tailored to actual production scale, Tan Long is the strategic choice. With over 20 years of experience in the refrigeration and air conditioning industry, we not only supply equipment but also provide comprehensive solutions to optimize the cold storage chain. Every system implemented by Tan Long is meticulously calculated based on the synchronization between imported refrigeration compressors and EU-standard industrial evaporators, ensuring the fastest freezing performance with the lowest operating costs.

Tan Long proudly pioneers in providing comprehensive services from surveying and design to system installation. wind tunnel Nationwide. When choosing services at Tan Long, customers will receive the following core values:
- In-depth technical consultation: Our team of experienced engineers directly surveys and designs systems based on the specific product characteristics and unique productivity goals of each business.
- Comprehensive service solution: From supplying PU panel enclosures and installing specialized cold storage doors to programming intelligent PLC control cabinets, we control quality from start to finish.
- Transparency regarding costs: Tan Long is committed to providing a detailed quotation once, ensuring competitiveness and absolutely no unexpected costs throughout the project implementation process.
- Support for operation and maintenance: After installation is complete, we provide detailed operational training to the factory staff and offer regular maintenance to ensure the system operates reliably and stably.
With its technological strengths and modern manufacturing facilities in Duc Hoa 1 Industrial Park, Tan Long is committed to providing solutions. wind tunnel Meeting international quality standards, contributing to enhancing the competitiveness of Vietnamese agricultural and aquatic products. For in-depth consultation or on-site survey requests, please contact Tan Long immediately via hotline. (+84) 933 357 058 For the quickest and most professional support.


































