Direct Expansion Constant Temperature & Humidity Air Handling Units – Stock Preparation for Cambodia

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Keruite Air Conditioning Group is currently preparing a batch of Direct Expansion (DX) Constant Temperature and Humidity Air Handling Units for an upcoming project in Cambodia. These specialized units are engineered to provide precise temperature and humidity control for critical environments, ensuring stable operation in Cambodia's tropical climate. Watch our stock preparation process here. Product Overview Direct Expansion Constant Temperature and Humidity Air Handling Units are integrated air conditioning systems that combine cooling, heating, humidification, dehumidification, and air filtration into a single packaged unit. Unlike chilled water systems that require a separate chiller plant, DX units utilize a direct expansion refrigeration cycle where refrigerant flows directly through the evaporator coil to cool and dehumidify the supply air. This integrated design delivers precise temperature and humidity control for applications requiring strict environmental conditions. These units feature a high-efficiency scroll compressor, an air-cooled or water-cooled condenser, a finned-tube evaporator coil, electric or hot water heating elements, a humidifier (electrode or steam type), and multi-stage filtration. The entire system is factory-assembled, piped, wired, and tested before shipment, reducing on-site installation time and ensuring reliable performance. Key Features & Benefits Precise Temperature Control: Maintains temperature within ±0.5°C to ±1°C accuracy using advanced PID control logic, ensuring stable conditions for sensitive processes and equipment. Accurate Humidity Control: Achieves humidity levels from 30% to 70% RH with ±5% accuracy, utilizing hot gas bypass or variable speed compressor technology for precise dehumidification and humidification. Direct Expansion Efficiency: The DX system eliminates the need for a separate chiller and chilled water pumps, reducing system complexity, installation costs, and energy losses associated with secondary heat exchange. Integrated Design: All components including compressor, condenser, evaporator, controls, and safety devices are factory-mounted and tested, minimizing field installation work and ensuring reliability. Wide Operating Range: Designed for reliable operation in ambient temperatures from -15°C to 55°C, with specialized anti-corrosion treatment available for coastal environments like Cambodia. Multi-Stage Filtration: Available with primary, medium, and HEPA filter options to meet cleanroom requirements from ISO 8 to ISO 6 (Class 100,000 to Class 1,000). Intelligent Controls: Advanced PLC-based control system with touchscreen interface, remote monitoring capability, and integration with Building Management Systems (BMS) via Modbus or BACnet protocols. Energy Efficient: Optional variable frequency drives (VFD) for compressor and fan motors, hot gas bypass for capacity control, and energy recovery options to minimize operating costs. Technical Specifications Model Cooling Capacity (kW) Heating Capacity (kW) Air Flow (m³/h) Compressor Type DX-15 15 10 3,000 Scroll DX-25 25 18 5,000 Scroll DX-40 40 28 8,000 Scroll DX-60 60 42 12,000 Scroll DX-80 80 56 16,000 Scroll DX-100 100 70 20,000 Scroll DX-150 150 105 30,000 Scroll/Screw Key Parameters: Temperature Range: 18-28°C (cooling mode), 20-30°C (heating mode) Humidity Range: 30-70% RH Temperature Accuracy: ±0.5°C Humidity Accuracy: ±5% Power Supply: 380V/50Hz, 3-phase (custom voltages available) Refrigerant: R410A or R407C Compressor: Scroll or screw type, fully hermetic Expansion Valve: Electronic expansion valve (EEV) with precise control Filter Options: Primary (G4), Medium (F8), HEPA (H13-H14) Casing: Double-skinned with thermal break, anti-corrosion treatment Ideal Applications Pharmaceutical manufacturing and storage Electronics and semiconductor production Food and beverage processing Precision instrument manufacturing Cleanrooms and laboratories Data centers and server rooms Hospitals and healthcare facilities Archives and museums Tobacco and textile industries Built for Cambodia's Tropical Climate Cambodia's tropical monsoon climate presents unique challenges for HVAC equipment, including high ambient temperatures (up to 35-38°C), high humidity (80-90% RH), and salt-laden air in coastal areas. Our DX units for Cambodia are engineered with: High ambient temperature design: Condensers sized for 45°C ambient operation Corrosion-resistant coatings: Epoxy-coated coils and galvanized steel with anti-corrosion treatment Humidity management: Oversized evaporator coils and dehumidification control for high latent loads Voltage stabilization: Wide voltage tolerance for unstable grid conditions Durable packaging: Export-worthy packaging for sea freight, with moisture barriers and shock protection Quality Assurance Each DX Constant Temperature and Humidity Unit undergoes comprehensive testing before shipment: Refrigeration system performance validation (cooling/heating capacity) Humidity control accuracy testing Airflow and static pressure verification Electrical safety inspection Refrigerant leak testing Vibration analysis Overall system operation validation Why Choose Keruite DX Constant Temperature & Humidity Units? Precision Performance: Industry-leading temperature and humidity control accuracy Reliable Quality: ISO9001 and CE certified manufacturing with 25+ years of experience Customized Solutions: Tailored to specific project requirements – capacity, dimensions, filter grades, and control systems Tropical Climate Engineering: Designed for reliable operation in Southeast Asian environments Complete Support: From technical consultation to after-sales service Competitive Pricing: Factory-direct pricing without compromising quality Have a project requiring precise temperature and humidity control in Cambodia or other Southeast Asian markets? Contact us for a customized solution. 🌐 Website: https://www.krtfj.cn 📧 Email: liyanlin@dzkrt.com 📞 WhatsApp/WeChat: +8613356848575 #DXUnit #ConstantTemperature #HumidityControl #Cleanroom #HVAC #PharmaceuticalHVAC #ElectronicsHVAC #Keruite #ChinaManufacturer #Cambodia #SoutheastAsia #HVACsupplier #PrecisionHVAC #B2B