Anhui Noran Technology Co., Ltd.

Industrial Direct Expansion(DX) Constant Temperature & Humidity Air Conditioner

Precise Temperature & Humidity Control with Flexible Split-System Design

The Industrial DX Constant Temperature & Humidity Air Conditioner is designed to provide stable temperature and humidity control for industrial and controlled environments.

Using a direct expansion (DX) refrigeration system, the unit directly cools and conditions the air without requiring chilled water. The system consists of an indoor air-conditioning unit and an outdoor condensing unit, connected by refrigerant copper pipes.

Both air-cooled and water-cooled configurations are available to suit different installation conditions and cooling requirements.

 

Contact Us Contact Us
  • Description
  • Specification
  • Application
  • Case Study
  • FAQ

1. Key Features

  • Direct Expansion (DX) Cooling— Refrigerant directly cools the indoor air through the evaporator coil.
  • Constant Temperature & Humidity Control— Integrated cooling, heating, dehumidification, and humidification functions.
  • Split-System Design— Indoor and outdoor units are connected by refrigerant copper pipes for flexible installation.
  • Air-Cooled or Water-Cooled— Choose the appropriate condensing method according to site conditions.
  • Stable Air Supply— Provides continuous temperature- and humidity-controlled air for demanding environments.
  • Industrial-Grade Construction— Designed for reliable continuous operation in industrial applications.
  • Customized Configuration— Cooling capacity, air volume, temperature, and humidity control ranges can be configured according to project requirements.


2. Air-Cooled or Water-Cooled Configuration

① Air-Cooled Type

The outdoor condensing unit rejects heat directly to ambient air, making the system easy to install without a cooling-water system.

Suitable for: Facilities without existing cooling towers or circulating cooling-water systems.

② Water-Cooled Type

The condensing unit uses circulating cooling water to remove heat from the refrigeration system, providing an efficient solution where cooling-water infrastructure is already available.

Suitable for: Industrial facilities with existing cooling towers or centralized cooling-water systems.


3. Working Principle

The system uses direct expansion refrigeration technology. Refrigerant circulates between the indoor and outdoor units through copper refrigerant pipes.

Inside the indoor unit, the refrigerant absorbs heat from the air through the evaporator coil. The conditioned air is then supplied back into the controlled space.

Depending on the required operating conditions, the system can provide:

Cooling → Heating → Dehumidification → Humidification → Temperature & Humidity Control

Unlike chilled-water air-conditioning systems, the DX system directly produces conditioned cold air without a separate chilled-water circuit.


4. Why Choose a DX Temperature & Humidity Control System?

Direct Air Cooling
No chilled-water system is required. The DX evaporator directly cools the air.

Flexible Installation
The split indoor/outdoor configuration allows the equipment to be arranged according to the site layout.

Complete Air Conditioning
Cooling, heating, humidification, and dehumidification functions can be integrated into one system.

Flexible Condensing Options
Air-cooled and water-cooled configurations are available for different plant conditions.

Built for Industrial Applications
Designed for continuous operation where temperature and humidity stability are important.

Model NLHH 3w 5w 10w 12w 15w 19w 21w 24w 30w 36w 40w 50w 60w 75w
Refrigerating capacity 10M³Kcal 7.09 11.82 23.65 28.38 35.47 44.93 49.66 56.76 70.95 85.14 94.6 118.25 141.9 177.37
KW 8.25 13.75 27.5 33 41.25 52.25 57.75 66 82.5 99 110 137.5 165 206.26
Constant temperature and humidity external machine Compressor Power KW 2.2 3.7 7.4 8.9 11 14 15.4 18.4 22 27 29.4 35.8 45 56
Compressor Quantity 1 1 2 1 3 3 3 2 3 3 4 4 4 3
Condenser Form Efficient copper tube with aluminum foil sleeve
Condenser Cooling air volume 3400 5800 13000 17000 21000 26000 29000 31500 34880 37800 48880 62680 78000 96500
Condenser Cooling fan power 0.18 0.32 0.64 1.2 1.56 1.7 1.7 2.34 2.4 2.75 3.2 3.6 6.4 6.6
Total machine power KW 2.38 4.02 8.04 10.1 12.56 15.7 17.1 20.74 24.4 29.75 32.6 39.4 51.4 62.6
Long L (mm) 1200 1200 1430 1430 1650 2000 2000 2600 2800 2800 3200 3200 3800 4000
Wide W (mm) 840 840 910 1000 1000 1000 1000 1140 1140 1400 1400 1400 1400 2000
High H (mm) 1350 1350 1560 1560 1600 1600 1600 1600 1650 1650 1650 1650 1650 1700
Unit Weight(kg) 180 200 450 480 500 650 850 1000 1200 1300 1580 1660 1880 2000
Constant temperature and humidity internal machine Blower Air volume 500-1000 800-2500 1500-3800 1500-3800 1600-5500 2000-7800 2500-8800 3000-12000 3500-12000 4500-15000 6000-16500 8000-18000 10000-22000 12000-25000
Blower Power KW 0.75 1.1 2.2 3 4 4 5.5 5.5 7.5 7.5 11 11 15 15
Blower Wind pressure 600 600 600 600 800 800 800 800 850 850 850 850 850 850
Evaporator Form Efficient copper tube with aluminum foil sleeve
Evaporator Cooling capacity 3P 5P 10P 12P 15P 19P 21P 24P 30P 36P 40P 50P 60P 75P
Heat carrying capacity(PTC electric heating)(kw) 2.2 3 6 6 9 12 12 15 18 22 30 36 40 50
Humidification amount(electrode humidification)(kg) 1.5 3 6 6 8 10 12 13 16 20 22 28 32 41
Long L (mm) 2600 2800 3000 3200 3600 3600 3600 3600 3600 3600 3800 3800 3800 3800
Wide W (mm) 1000 1200 1400 1500 1500 1500 1600 1600 1800 1800 1900 1900 1940 1940
High H (mm) 1100 1200 1400 1500 1500 1500 1600 1600 1800 1800 1900 1900 1940 1940
Unit Weight(kg) 280 320 370 450 560 560 680 680 800 800 950 950 1000 1000
Safety protection device Lack of reverse-phase alarm, High and low voltage protection, Overload current protection, Water shortage alarm, Antifreeze protection, Delay protection, etc.



Rating Conditions: 

Chilled water inlet/outlet: 12°C / 7°C; cooling water inlet/outlet: 30°C / 35°C;Refrigerant:R22/ R410/R134a / Optional refrigerant according to market requirements.Standard power supply is 380V-50HZ-3P; other requirements can be customized.

Air -cooled and Water-cooled condensing types are available.

Designed for facilities where stable temperature, humidity, and air conditions are critical to production, product quality, or environmental control.

  • High Temperature & Humidity Control Requirements
    For customers who need to maintain a stable indoor temperature and humidity range to ensure consistent production conditions and product quality.

  • Clean & Controlled Environments
    Suitable for facilities requiring controlled air conditions and a cleaner production environment, where temperature and humidity fluctuations need to be minimized.

  • Humidity-Sensitive Production
    Ideal for processes or materials that are sensitive to moisture, excessive dryness, or changes in relative humidity.

  • Temperature-Sensitive Processes
    Recommended for production environments where excessive heat or temperature fluctuations can affect equipment performance, processing stability, or product quality.

  • Precision Production & Testing Areas
    Suitable for customers requiring stable environmental conditions for precision manufacturing, testing, inspection, or laboratory operations.

  • Enclosed Workshops & Controlled Rooms
    A practical solution for enclosed production areas where conventional ventilation or standard industrial air coolers cannot provide sufficient temperature and humidity control.

Recommended for customers who need more than simple air cooling — especially those requiring controlled temperature, humidity, and air conditions for stable production.

Application:

Powder coating factory cooling--- in Zhejiang, China

Cooling Capacity: 137.5KW

Result:

To keep the factory workplant in a constant temperature and humidity

allijlex1789006712pkcxovoq1789006713

  1. Does the system require chilled water?
    The DX system directly cools the air through the indoor evaporator coil and does not require a chilled-water circuit.

  2. Is the system available in both air-cooled and water-cooled versions?
    Both configurations are available depending on the installation environment and available cooling infrastructure.

  3. How are the indoor and outdoor units connected?
    The indoor and outdoor units are connected through refrigerant copper pipes, similar to a split air-conditioning system.

  4. Can temperature and humidity ranges be customized?
    The control range and equipment configuration can be designed according to the specific application requirements.

  5. Can the unit provide both cooling and dehumidification?
    The system can integrate cooling, dehumidification, heating, and humidification functions for comprehensive temperature and humidity control.
Expert in High-End Industrial Refrigeration Equipment
Who We Are

Hangzhou Noran Machinery Equipment Co., Ltd. is China industrial DX air conditioner manufacturers and OEM DX temperature humidity control suppliers, founded in 2014, focusing on the R&D and manufacturing of high-end refrigeration equipment. In 2021, Anhui Noran Technology Co., Ltd. was established, with a 50-mu production base built in Mingguang, Anhui Province, continuously upgrading capabilities in R&D, manufacturing and project delivery.

Noran mainly supplies industrial water chillers, air coolers, mold temperature control systems, explosion-proof refrigeration units and magnetic levitation centrifugal units. Its products are widely used in powder coating, plastic mould, electronic photovoltaic, pharmaceutical chemical and other industries. Supported by technological innovation, university cooperation and patent reserves, we are committed to providing customers with stable, energy-saving and customizable industrial temperature control solutions.

  • Anhui Noran Technology Co., Ltd.

    0+

    years

    Industry Experience

  • Anhui Noran Technology Co., Ltd.

    0+

    Patent Certification

  • Anhui Noran Technology Co., Ltd.

    0+

    Number of Employees

  • Anhui Noran Technology Co., Ltd.

    0

    ㎡

    Factory Area

Anhui Noran Technology Co., Ltd.
Certificate Of Honor
Stay updated on Noran’s latest news, industry insights, and upcoming exhibitions.

News & Insights

Industry knowledge

Why Is an Industrial DX Constant Temperature Humidity Air Conditioner More Energy-Efficient Than Traditional HVAC Systems?

Energy consumption is one of the largest operating costs in any temperature and humidity controlled production environment. Traditional HVAC systems are designed primarily for human comfort, while an industrial DX constant temperature humidity air conditioner is engineered for process accuracy and continuous industrial duty. This fundamental design difference explains why a properly selected industrial DX air conditioner often delivers lower energy consumption per unit of controlled space than conventional comfort HVAC equipment. As an industrial DX air conditioner manufacturer, Anhui Noran Technology Co., Ltd. designs systems around cooling capacity, temperature accuracy, operating environment, and installation conditions.

1. Direct Expansion Design Eliminates Intermediate Heat Transfer Losses

A direct expansion air conditioning unit places the evaporator directly in the air stream, so refrigerant absorbs heat from the air without an intermediate chilled water loop. Traditional chilled water HVAC systems require a chiller, pumps, piping, and an air handling unit, and each stage introduces energy losses.

  • Direct refrigerant expansion: heat is absorbed directly from the air stream.
  • No chilled water loop: eliminates pump power and piping heat gain.
  • Fewer energy conversion stages: reduces cumulative efficiency losses.
  • Faster response: refrigerant-based control reacts quickly to load changes.

2. Purpose-Built for Continuous Industrial Duty

Comfort HVAC systems cycle on and off based on occupancy and comfort set points. An industrial constant temperature humidity air conditioner runs continuously and modulates capacity to hold tight tolerances. Modulating operation avoids the high inrush current and inefficiency associated with frequent compressor starts.

  • Continuous duty design: components rated for 24/7 industrial operation.
  • Modulating capacity: matches output to actual load instead of cycling.
  • Reduced start-stop losses: fewer compressor starts lower average power draw.
  • Longer service life: stable operation reduces mechanical wear.

3. Integrated Temperature and Humidity Control

In many industrial processes, temperature and humidity must be controlled simultaneously. A DX temperature humidity control system manages both parameters with one integrated logic, avoiding the conflict that occurs when separate cooling and dehumidification systems fight each other.

  • Simultaneous control: temperature and humidity handled by one system.
  • Reduced reheat demand: avoids unnecessary reheating after over-cooling.
  • Avoided system conflict: prevents cooling and humidifying at the same time.
  • Process-matched set points: control logic tuned to production requirements.

4. Intelligent Control and Variable Capacity Modulation

Modern DX equipment uses advanced controllers, variable-speed compressors, and electronically commutated fans to match capacity precisely to demand. This modulation is the single largest source of energy savings compared with fixed-speed traditional systems.

  • Variable-speed compressors: reduce power draw at part-load conditions.
  • EC fan motors: lower fan energy at reduced airflow demand.
  • Precise sensor feedback: prevents unnecessary over-cooling or over-drying.
  • Load-adaptive algorithms: optimize operation across seasonal changes.

5. Targeted Cooling Instead of Whole-Building Conditioning

Traditional HVAC systems often condition entire buildings, including corridors, storage areas, and offices. An industrial DX air conditioner can be applied as a dedicated temperature and humidity control unit serving only the critical production zone, which dramatically reduces the volume of air that must be conditioned.

  • Zone-specific conditioning: cooling only where process accuracy is required.
  • Reduced conditioned volume: less air to cool, heat, and dehumidify.
  • Lower duct losses: shorter air paths reduce leakage and heat gain.
  • Scalable modularity: capacity added only as production expands.

6. Heat Recovery and Free-Cooling Opportunities

DX systems can be integrated with heat recovery and free-cooling options. Recovered condenser heat can preheat process air or domestic water, while free-cooling uses cool outdoor air when conditions allow, reducing compressor runtime.

  • Heat recovery integration: reuse rejected heat for other plant needs.
  • Free-cooling mode: use ambient cool air to reduce compressor load.
  • Seasonal optimization: shift between modes based on outdoor conditions.
  • Reduced annual energy: lower cumulative compressor operating hours.

Parameter Comparison: Industrial DX vs Traditional HVAC

Comparison Item Industrial DX Constant Temperature Humidity Air Conditioner Traditional HVAC System
Primary design purpose Process accuracy and continuous industrial duty Human comfort
Heat transfer path Direct expansion, refrigerant to air Chilled water loop with intermediate stages
Typical temperature tolerance ±0.5°C to ±1°C ±2°C to ±3°C or wider
Typical humidity tolerance ±3% to ±5% RH ±10% RH or uncontrolled
Capacity modulation Variable-speed, continuous modulation Often fixed-speed, on-off cycling
Compressor start frequency Low, stable operation High, frequent cycling
Part-load efficiency High Moderate to low
Reheat requirement Minimized by integrated control Common, increases energy use
Conditioned zone Targeted critical production area Whole building or large zones
Duct and piping losses Lower, shorter air paths Higher, extensive distribution
Heat recovery option Integrated Limited or add-on
Free-cooling option Available Varies by design
Service life under continuous duty Designed for 24/7 operation Not rated for continuous industrial duty
Typical energy outcome Lower kWh per controlled zone Higher kWh per controlled zone

7. Matching Equipment to Actual Process Requirements

Energy efficiency is not only a matter of component quality. A DX air conditioner for custom demand must be engineered around the real load profile, required tolerance, ambient conditions, and installation constraints. Oversized or undersized equipment both waste energy, so accurate selection is essential.

Anhui Noran Technology Co., Ltd. was founded from Hangzhou Noran in 2014 and moved to Anhui in 2021, establishing an approximately 33000 m2 production base in Mingguang City, Anhui Province. The company designs and manufactures industrial chillers, air cooling systems, screw chillers, low-temperature refrigeration units, heat recovery systems, explosion-proof refrigeration equipment, and customized cooling solutions. Its products serve plastics, powder coating, electronics and photovoltaics, pharmaceuticals, chemicals, industrial painting, and large-scale industrial projects.

As a DX temperature humidity control supplier, Anhui Noran Technology Co., Ltd. provides air conditioner for temperature and humidity control solutions built around cooling capacity, temperature accuracy, operating environment, and installation conditions. The company focuses on energy-saving refrigeration technologies, low-temperature cooling, intelligent temperature control, and customized system integration, delivering stable, efficient, and professional refrigeration solutions to customers worldwide.

FAQ

Q1: How much energy can an industrial DX constant temperature humidity air conditioner save compared with a traditional HVAC system?

A: Savings depend on climate, load profile, tolerance requirements, and system design, but the main gains come from eliminating chilled water intermediate losses, reducing compressor cycling through modulation, and conditioning only the critical production zone. Typical projects see meaningful reductions in annual kWh compared with comfort HVAC serving the same area, especially where tight humidity control is required and reheat is avoided. Anhui Noran Technology Co., Ltd. evaluates cooling capacity, temperature accuracy, operating environment, and installation conditions to quantify expected savings for each application.

Q2: Is a DX temperature humidity control system suitable for pharmaceutical and electronics production?

A: Yes. These industries require tight and repeatable control of both temperature and humidity, which is exactly what a DX temperature humidity control system is designed to deliver. Anhui Noran Technology Co., Ltd. manufactures equipment for pharmaceuticals, electronics and photovoltaics, chemicals, and other precision industries. Because the system integrates cooling, dehumidification, and modulation in one control platform, it avoids the conflicting operation that often occurs when separate comfort HVAC and standalone dehumidifiers are combined.

Q3: Can Anhui Noran Technology Co., Ltd. customize a temperature and humidity control unit for a specific production process?

A: Yes. Anhui Noran Technology Co., Ltd. specializes in industrial chillers, air cooling systems, screw chillers, low-temperature refrigeration units, heat recovery systems, explosion-proof refrigeration equipment, and customized cooling solutions. The company supplies DX air conditioner for custom demand projects, engineering each temperature and humidity control unit around the actual load profile, required tolerance, ambient conditions, and available installation space. Continuous investment in research and cooperation with leading institutions support stable, efficient, and professional refrigeration performance.