Chili Export Drying Project in Dak Lak: Elevating Vietnamese Agricultural Products with DeAir's Daxwell Heat Pump Technology

Chili Export Drying Project in Dak Lak: Elevating Vietnamese Agricultural Products with DeAir's Daxwell Heat Pump Technology

Vietnamese agricultural products, especially spices like chili, are increasingly making their mark on the international market. However, meeting the stringent standards of demanding markets requires a pivotal post-harvest process, particularly the drying stage. A company in Dak Lak, aiming to export high-quality chili, faced the challenge of drying the product while preserving its natural color, flavor, and ideal final moisture content. DeAir was entrusted to provide a solution, and the results have proven the outstanding capability of "Made in Vietnam" drying technology.

The Real-World Challenge: Bulk Drying of Thawed Chili for Export

The Dak Lak-based company presented DeAir with a set of very specific and demanding requirements:

• Product: Thawed fresh chili. This is a significant challenge as thawed chili has a very high water content and a softer texture, requiring a delicate drying process to avoid damage or deformation.
• Scale: Drying within a 40-foot container (40F), a flexible and cost-effective solution that saves on factory construction investment and suits modern agricultural production models.
• Technical Specifications:
  • Drying Temperature: A stable 70°C. This high temperature requires equipment with the capabilities of a heat-resistant dehumidifier that can provide consistent and continuous heat.
  • Final Moisture Content: To achieve 10-13%. This is the "golden ratio" for long-term preservation, preventing mold while maintaining a certain pliability to meet export standards.
  • Drying Time: To complete a batch within approximately 30-32 hours, ensuring productivity and economic efficiency.

The greatest challenge was not just moisture removal, but ensuring the chili dried uniformly from the inside out, retained its vibrant natural red color (without darkening from excessive heat), and preserved its characteristic spicy flavor.

DeAir's Comprehensive Solution – The Daxwell Industrial Heat Pump Dryer

With extensive experience in the heat and humidity sector, DeAir's engineers surveyed the site and proposed the optimal solution: the Daxwell industrial heat pump dryer. This is a premium dryer line manufactured by DeAir in Vietnam, specifically designed for industrial applications that demand high precision and efficiency.

Why the Daxwell Heat-Pump Dryer?

1. Energy-Saving Heat Pump Technology: True to the slogan "Economical Heat-Pump humidity treatment solutions!", DeAir's heat-pump technology utilizes the heat generated during condensation to feed it back into the drying cycle. This reduces electricity consumption to just half of that of traditional resistance heating methods, offering superior long-term economic benefits.
2. Precise Control with PLC & HMI: A key advantage of the Daxwell line is its intelligent control panel. The PLC humidity controller allows DeAir engineers to program multi-stage drying cycles, flexibly customized to the specific characteristics of each product. For thawed chili, the cycle was optimized: an initial stage at a lower temperature for gradual evaporation to prevent skin cracking, a subsequent stage where the temperature was raised to 70°C for deep drying, and a final stabilization stage to reach the target moisture content. This entire process is visually monitored via the HMI, ensuring absolute stability and reliability.
3. Wide Operating Temperature Range: The various models of the Daxwell industrial dryer can operate efficiently across a wide temperature range, from 25°C to 80°C, perfectly meeting the 70°C requirement for chili drying.
4. Circulating Convection Airflow: The high-efficiency fan in the Daxwell machine, part of a complete industrial dehumidification system, combined with the strategic arrangement of trolleys inside the container, creates a circulating flow of hot, dry air. This air penetrates every chili, ensuring uniform drying and completely eliminating "wet and dry spots."

Outstanding Results – Elevating the Value of Vietnamese Chili

After the system was installed and commissioned, the actual results fully met and exceeded the client's expectations:

• Perfect Product Quality: The dried chili boasted a vibrant, beautiful red color without any scorching. The final moisture content was tightly controlled within the 10-13% range, meeting export preservation requirements. The characteristic spicy flavor of Dak Lak chili was fully preserved.
• Time Efficiency Achieved: Each large batch in the 40F container was completed within the targeted 30-32 hours.
• Optimized Operating Costs: Thanks to the heat pump dehumidifier technology, the energy cost per kilogram of finished chili was significantly reduced, enhancing the product's price competitiveness.

The chili drying project in Dak Lak stands as a prime example of DeAir's capability in providing specialized and effective heat and humidity solutions. By combining advanced technology with a deep understanding of products and processes, DeAir not only helps businesses solve production challenges but also contributes to elevating the value of Vietnamese agricultural products, empowering them to confidently reach the global market.