Context: High demand for premium dried orange peel (Trần Bì), but traditional drying methods have become a major bottleneck.
The Problem: Environmental policies banning coal/wood boilers, weather dependence, nutrient loss, and poor color consistency.
The Solution: Daxwell Heat-Pump Dryer integrating drying, dehumidification, fresh air supply, and precise multi-level temperature control.
The Results: Unmanned operation, energy efficiency, eco-friendly process, lustrous finished products, and maximum preservation of essential oils and medicinal properties.
1. The "Bottleneck" of Traditional Orange Peel Drying
1.1. Market Potential: From Orange Peel to "Gold"
Dried orange peel, especially from premium varieties, becomes "Trần Bì"—a highly valued medicinal ingredient in traditional medicine with significant economic value. It is widely used in traditional remedies, teas, and functional foods.
Dried orange peel (Trần Bì) - A premium medicinal ingredient with high economic value.
Sugar-coated dried orange peel - A value-added product derived from Trần Bì.
1.2. Existing Barriers
⚠️ SERIOUS OPERATIONAL ISSUES
Environmental Policies: Bans on coal and wood-fired boilers are severely restricting the operational space for traditional processing facilities.
Weather Dependence: Sun-drying is highly susceptible to mold, dust contamination, and inconsistent coloring.
Unstable Quality: Uncontrolled temperatures cause essential oils to evaporate, peels to become hard and brittle, and result in low finished-product rates.
High Labor & Energy Costs: Requires continuous manual turning and consumes excessive fuel.
Traditional sun-drying - Highly weather-dependent and lacking in hygiene standards.
2. The Breakthrough Solution: Daxwell Heat-Pump Dryer
Daxwell is an industrial dryer line integrated with a PLC control cabinet and an HMI screen, manufactured by DeAir to international standards. It is not just a dryer; it is a smart drying system capable of precisely controlling every technical parameter.
Daxwell Heat-Pump Dryer connected to a container drying room - A flexible solution for any scale.
PLC/HMI Control Screen - Precise control over every drying parameter.
🔧 4-IN-1: COMPREHENSIVE DRYING SYSTEM
Heating: Provides stable temperatures ranging from 25-80°C.
Dehumidification: Continuously removes moisture to maintain optimal humidity levels.
Fresh Air Supply: Ensures proper air circulation, preventing odor buildup.
Multi-level Temperature Control: Precisely adjusts conditions for each specific drying stage.
3. The 5-Step Standardized Orange Peel Drying Process with Daxwell
Based on practical experience and expert research, DeAir has optimized the orange peel drying process into 5 standardized steps, ensuring Grade 1 Trần Bì quality:
🔄 STANDARDIZED TRẦN BÌ DRYING PROCESS - 5 STEPS
1
SELECTION & PREP
Select fresh oranges, score into 3 equal segments, separate pulp from peel.
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2
SOFT DRYING
35-40°C for 1 hour to remove surface moisture.
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3
TURNING & SHAPING
Gently turn the peels, maintain the 3-segment shape, avoid breakage.
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4
CONSTANT TEMP DRYING
45°C for 7 hours, rotate trays every 2 hours.
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5
INSPECTION & PACKING
Target: 25% weight, 15% moisture. Seal in airtight packaging.
💡 The Golden Rule in Step 4: Rotate the tray positions every 2 hours following the pattern: top↔bottom, front↔back, diagonal. This ensures absolutely even heat distribution, preventing one side from burning while the other remains damp.
4. Infographic: Superior Efficiency of Daxwell
📊 COMPREHENSIVE EFFICIENCY EVALUATION
Comparing Daxwell Heat-Pump Dryer with Traditional Methods
50%
Energy Savings
Vs. electric resistance/boilers
90%
Waste Reduction
Grade 1 yield >95%
95%
Automation
PLC/HMI, no constant monitoring
85%
Essential Oil Retention
Low, stable temperature control
100%
Eco-Friendly
Zero smoke, zero emissions
❌ Traditional Drying
❌ Uneven color, loss of essential oils
❌ 100% weather dependent
❌ Smoke, dust, policy violations
❌ 15-20% waste, requires constant monitoring
❌ High energy costs
✅ Daxwell Dryer
✓ Lustrous color, retains full essential oils
✓ Operates 24/7 regardless of weather
✓ Zero emissions, meets environmental standards
✓ <2% waste, fully automated
✓ Saves 50% on energy costs
5. Dual Benefits: Economic & Quality
5.1. Quality Benefits
Natural Color Retention: Beautiful lustrous golden-brown, no charring or mold.
Perfect Shape: Intact 3-segment shape, enhancing aesthetic and commercial value.
Maximum Active Compound Preservation: Essential oils and medicinal properties are fully preserved due to precise low-temperature control.
Grade 1 Trần Bì Standard: Commands a 30-50% higher selling price compared to standard grades.
Policy Compliance: Zero risk of violations related to coal/wood boiler bans.
6. Frequently Asked Questions (FAQ)
Q1: Can the Daxwell dryer be adjusted for other fruit peels (pomelo, lemon)?
Yes, the Daxwell dryer features flexible temperature control from 25-80°C and allows you to program multiple drying recipes on the HMI screen. You can save specific recipes for pomelo, lemon, or orange peels and switch between them with just a few taps.
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Q2: Does the "rotate trays every 2 hours" rule require manual labor?
Currently, rotating the trays is done manually to ensure perfect heat distribution. However, DeAir can advise on designing specialized trolley systems or drying rooms with 3D airflow patterns to further optimize this process and minimize manual labor.
Q3: How does the Daxwell dryer save electricity compared to electric resistance dryers?
The Heat-Pump technology in the Daxwell dryer saves 50% on electricity compared to standard electric resistance dryers. It works by capturing the heat generated during the condensation process and reusing it to reheat the dehumidified air, rather than generating heat directly via electric elements.
Q4: Is 15% moisture content the optimal standard for long-term orange peel storage?
Yes, 15% moisture is the ideal standard for Trần Bì because:
It prevents mold growth (mold requires >60% RH to thrive).
It maintains the perfect crispness without becoming overly brittle or damp.
It perfectly preserves essential oils and active medicinal compounds.
It allows for safe storage for 12-24 months when properly sealed.
Q5: Does DeAir provide installation and operational training?
Yes, DeAir provides a comprehensive turnkey service including:
On-site survey and custom drying room/trolley design.
Professional installation and system commissioning.
Pre-programmed "Drying Recipes" for orange peels directly on the HMI screen.
Detailed operational training for your staff.
24-month warranty and 24/7 technical support.
Elevate Vietnamese Agricultural Value - Start with a Standardized Drying Process
Don't let outdated drying methods diminish the value of your products. The Daxwell Heat-Pump Dryer is the comprehensive solution to help you produce premium Grade 1 Trần Bì, cut costs, and protect the environment.
Is your enterprise looking for an optimal orange peel drying solution?