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sollant Refrigeration Dryer

Refrigeration Air Dryer

Flow range: 1.6~180 m3/min
Pressure range: ≤1.6 MPa (16 barg)
Maximum intake air temperature: 60°C
Maximum ambient temperature: 50°C
Minimum ambient temperature: 5°C
Maximum cooling water temperature: 35°C
Cooling method: air-cooled/water-cooled
Power supply: 220V/1Ph/50Hz (60-PD~150-PD)
Refrigerant: R407C (R22 optional)
Rated working conditions: working pressure 0.7 MPa, intake air temperature 38°C, ambient temperature 38°C, cooling water temperature 30°C, pressure dew point 2-10°C.

High-quality compressed air escorts your equipment and processes

Refrigerated dryers ensure dry compressed air, prolonging the life of your equipment and ensuring excellent production quality. Efficient removal of water to avoid corrosion in compressed air networks and air tools. All in all, can reduce your maintenance cost and improve your overall level, the production process gives you complete peace of mind.

» Strong and sturdy

  • The precooler, evaporator, and gas-liquid separator adopt an integrated design;
  • The special thickened alloy aluminum heat exchanger assembly has a much higher corrosion resistance than similar designs at home and abroad; it is different from products made of carbon steel and will not cause secondary pollution to the gas quality;
  • The surface of the wind condenser adopts nano anti-corrosion coating to prolong the service life.

» Energy saving and environmental protection

  • The heat exchanger adopts the advanced plate-fin structure in Europe and America, with high efficiency;
  • The temperature difference between the inlet and outlet of the precooler is 5-8°C, which is much better than that of similar products, which not only ensures extremely low relative humidity at the outlet, but also prevents condensation at the nozzle.
  • Since the pre-cooler recovers more than 90% of the cooling capacity, the load on the evaporator is effectively reduced, and the energy consumption of the whole machine is only 70% of that of similar products.
  • The whole series of products use environmentally friendly refrigerants, which comply with the environmental protection laws of various countries.

» Safe and reliable

  • Segmented test design eliminates the risk of system leakage;
  • The main components are all internationally renowned brands with high reliability;
  • The whole series of products are equipped with multiple overload protection and shutdown protection;
  • The whole series of products have passed the latest EU CE safety certification.

» Various control options

  • The standard configuration is instrument type with fault alarm;
  • Can be selected according to user needs: single-chip microcomputer, PLC, touch screen, etc.;
  • It can meet various communication requirements of users from RS485 I/O, Profibus, Modbus, Ethernet connection, etc.

sollant air dryer

Standard operating conditions
Ambient temperature 35°C; Intake temperature <45°C; Intake pressure>0.7Mpa; Pressure dew point 2-10°C under standard working conditions;

Extreme conditions
Ambient temperature<45°C; Intake temperature<60°C; Inlet pressure>0.5Mpa; Equipment pressure: below SLT135L (included)≤1.6Mpa; above SLT170L (included)≤1.3Mpa



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Stay Dry, Stay Efficient: The Benefits of Refrigerated Air Dryers

Compressed air, often referred to as the “fourth utility,” is a vital and versatile power source that underpins a myriad of industries. Its applications are as diverse as manufacturing, construction, food processing, pharmaceuticals, and electronics. Compressed air serves as the invisible force behind a vast array of equipment and processes, from pneumatic tools on factory floors to precision instruments in laboratories.

This section will provide a brief overview of the ubiquitous use of compressed air in various industries, emphasizing its irreplaceable role in powering critical equipment and processes. It will serve as a reminder of the indispensability of compressed air systems in our modern industrial landscape.

While compressed air systems are unquestionably indispensable, they also harbor a hidden challenge – moisture. This often-overlooked issue can be insidious, quietly corroding equipment, reducing efficiency, and causing unplanned downtime. The presence of moisture in compressed air can compromise the very systems it powers, leading to a cascade of problems that affect productivity and profitability.

Understanding Moisture in Compressed Air

A. The Source of Moisture

Moisture infiltrates compressed air systems through a combination of factors, each contributing to the accumulation of water vapor. Understanding these sources is paramount in addressing the challenge of moisture control.

  1. Ambient Air: Compressed air systems draw in atmospheric air, which inherently contains moisture. This moisture can be in the form of humidity, and its concentration varies depending on geographic location and weather conditions. As this ambient air is compressed, its relative humidity increases, leading to moisture saturation within the system.
  2. Compression Process: During the compression stage, air molecules are forced into a smaller space, causing an increase in temperature. As the air cools down after compression, it reaches a point called the dew point, where it can no longer hold the moisture it acquired during compression. This leads to condensation, and the moisture droplets begin to form.
  3. Cooling Process: In many compressed air systems, the air is cooled after compression for various purposes, such as reducing its temperature for specific applications. Cooling can occur in intercoolers, aftercoolers, or refrigeration dryers. This cooling exacerbates the dew point problem, causing further condensation and the formation of liquid water.

B. Effects of Moisture

The adverse effects of moisture in compressed air systems are far-reaching and can have a profound impact on operations, equipment, and product quality.

  1. Corrosion: Moisture-laden compressed air is a breeding ground for corrosion. The presence of water can lead to rust and corrosion within pipes, valves, and equipment, shortening their lifespan and compromising their integrity.
  2. Reduced Efficiency: Moisture within the system can lead to performance inefficiencies. Water droplets can obstruct airflow, leading to increased pressure drops and reduced system efficiency. This results in higher energy consumption and operational costs.
  3. Equipment Damage: Delicate instruments and pneumatic tools are highly sensitive to moisture. Water can damage sensors, clog nozzles, and cause malfunctioning in precision equipment, leading to production delays and quality issues.

C. The Need for Moisture Removal

Given the detrimental effects of moisture, effective moisture control is imperative in maintaining the integrity and efficiency of compressed air systems. This is where moisture removal solutions, such as refrigerated air dryers, come into play.

  1. Moisture Control Solutions: To ensure the reliability and performance of compressed air systems, it’s crucial to employ moisture control solutions. Refrigerated air dryers are among the most effective tools in this regard. They work by cooling the compressed air, causing moisture to condense and then removing it, delivering dry air with a low dew point.
  2. Preventative Maintenance: In addition to moisture removal solutions, regular maintenance and monitoring are essential for moisture control. This includes checking for leaks, maintaining drainage systems, and ensuring the proper functioning of dryers and filters.

By recognizing the sources and understanding the consequences of moisture in compressed air systems, industries can take proactive steps to mitigate these challenges. Refrigerated air dryers, as effective moisture control solutions, play a pivotal role in maintaining the efficiency and reliability of compressed air systems, ultimately contributing to enhanced equipment performance and cost savings.

Refrigerated Air Dryers: A Solution

Refrigerated air dryers are the unsung heroes of compressed air systems, quietly but effectively addressing the pervasive challenge of moisture. But what exactly are they, and how do they accomplish this critical task?

1. What Are Refrigerated Air Dryers?

Refrigerated air dryers are specialized devices designed to remove moisture from compressed air systems. They achieve this by leveraging the principles of cooling and condensation. Unlike desiccant dryers, which use absorbent materials, refrigerated air dryers utilize a refrigeration cycle to lower the temperature of compressed air, causing moisture to condense into liquid form.

2. How Do Refrigerated Air Dryers Work?

Refrigerated air dryers employ a cooling process to extract moisture from compressed air. The operation involves several key steps:

  1. Cooling: Compressed air enters the dryer, where it encounters a heat exchanger. In this exchanger, the air is cooled to a temperature near freezing, causing the moisture within it to condense into liquid droplets.
  2. Separation: The condensed liquid is then separated from the dry air using a moisture separator, typically in the form of a drain trap. This process ensures that only dry air proceeds further.
  3. Reheating: To prevent freezing of the air, it is then reheated to a more suitable temperature. This reheating step also helps maintain the compressed air’s desired temperature and prevents potential condensation downstream.
  4. Delivery: The now moisture-free compressed air is ready for delivery to the point of use, free from water vapor and primed for various applications.

One of the key strengths of refrigerated air dryers lies in their ability to achieve specific dew points. Dew point is the temperature at which air becomes saturated with moisture, leading to condensation. Different applications require different levels of dryness, and refrigerated air dryers can be tailored to meet these specific needs.

  1. Dew Point Control: Refrigerated air dryers are equipped with controls that allow users to set the desired dew point. By adjusting the cooling and reheating processes, these dryers can achieve dew points ranging from +2°C to -40°C (-36°F to -40°F) or even lower.
  2. Tailored Solutions: This flexibility makes refrigerated air dryers highly adaptable to various industrial applications. From pneumatic tooling, where a dew point of +2°C suffices, to sensitive electronics manufacturing that demands dew points below freezing, these dryers can be fine-tuned to meet specific requirements.

3.The Advantages of Refrigerated Air Dryers

Refrigerated air dryers bring a host of advantages to compressed air systems, making them a preferred choice for moisture control:

  1. Energy Efficiency: These dryers are known for their energy efficiency. By focusing on cooling the air rather than adsorbing moisture, they consume less energy, translating into cost savings over time.
  2. Consistent Performance: Refrigerated air dryers provide a consistent level of moisture removal, regardless of varying inlet conditions. This reliability is essential for maintaining product quality and equipment performance.
  3. Reliability: Their straightforward design and minimal moving parts make them highly reliable, with reduced maintenance requirements compared to other dryer types.
  4. Versatility: Refrigerated air dryers find applications in a wide range of industries, from manufacturing and food processing to pharmaceuticals and electronics. Their adaptability and dew point control make them a versatile choice.

As we explore the advantages of refrigerated air dryers, it becomes evident that these unassuming devices play a pivotal role in ensuring the efficiency, reliability, and quality of compressed air systems across diverse industries. Their contribution extends far beyond moisture removal; they are the linchpin that keeps the wheels of many industrial processes turning smoothly.

Eco-friendliness and Sustainability

Environmental Responsibility

Refrigerated air dryers not only revolutionize the efficiency of compressed air systems but also play a significant role in advancing environmental responsibility within companies. Let’s delve into how these devices positively influence a company’s commitment to sustainability.

One of the often-overlooked aspects of moisture in compressed air systems is the water it generates as a byproduct. This water, contaminated with oil and particulates, necessitates careful disposal, posing environmental challenges. Refrigerated air dryers address this issue at its root by eliminating moisture within the system.

By significantly reducing the moisture content in the compressed air, these dryers lead to a substantial drop in water consumption. This reduction translates to fewer environmental resources being used for treating and disposing of contaminated water. It’s a step towards a more sustainable and responsible approach to resource management.

Eco-friendly Features

Refrigerated air dryers are designed with a keen eye on eco-friendliness and energy efficiency, aligning with the broader goals of sustainability.

One noteworthy feature is the use of eco-friendly refrigerants. Traditionally, refrigeration systems employed refrigerants known for their high global warming potential (GWP). However, modern refrigerated air dryers have transitioned to eco-friendly refrigerants with significantly lower GWP. This shift demonstrates a commitment to reducing the environmental impact associated with refrigeration equipment.

Refrigerated air dryers come in various models, with a focus on energy efficiency. These models are designed to deliver the same, if not better, drying performance while consuming less energy. By optimizing the refrigeration cycle and minimizing energy usage, these dryers contribute to energy savings and, by extension, a reduced carbon footprint.

The eco-friendly features of refrigerated air dryers make them a responsible choice for companies striving to minimize their environmental impact. These devices not only ensure the efficient operation of compressed air systems but also align with the broader goals of sustainability and environmental stewardship. They enable companies to meet their operational needs while minimizing resource consumption and emissions, ultimately contributing to a greener industrial landscape.


As we conclude this exploration of refrigerated air dryers and their impact, it’s essential to emphasize the enduring importance of moisture control in compressed air systems. Moisture remains a silent adversary that can compromise equipment, efficiency, and product quality.

Our commitment to efficient and reliable compressed air systems remains unwavering. Technology and innovation will continue to drive progress, and we will explore every opportunity to enhance our systems and operations. Our dedication extends to sustainability and environmental responsibility, aligning with our vision of a greener, more efficient future.

In closing, the integration of refrigerated air dryers has not only resolved moisture-related challenges but has also empowered us to reach new heights of operational excellence. We invite other businesses to embark on similar journeys, to experience the transformative power of moisture control, and to contribute to a more sustainable and efficient industrial landscape.