Table of Contents
- What Is a Refrigerated Compressed Air Dryer?
- Features and precautions
- Main parts features
- Precautions
What Is a Refrigerated Compressed Air Dryer?
A refrigerated compressed air dryer is a type of dehumidification device that uses refrigeration to cool compressed air, causing condensation and effectively removing moisture from the air.
Compressed air from air compressors can often become mixed with water, especially in conditions of high humidity. This occurs when the hot, compressed air cools down and condenses into liquid water within the piping system. Such moisture can lead to problems, including water leakage from end-use devices like air guns. Refrigerated compressed air dryers are designed to efficiently eliminate this moisture issue.
The process involves the compression and liquefaction of refrigerant within the refrigeration system, generating vapor heat. This vapor heat is used to cool the compressed air, causing moisture to condense out and be drained away, effectively drying the compressed air. Various cooling sources, such as Freon gas, chilled water, or cooling water, are employed to facilitate the cooling and condensation processes.
Advantages of refrigerated compressed air dryer
No compressed air consumption;
No valve parts wear;
No need to regularly add or replace adsorbents;
Low operating noise;
Routine maintenance is relatively simple, just clean the automatic drain filter on time;
Disadvantages of the refrigerated compressed air dryer: Compared with the adsorption dryer, the "pressure dew point" of the compressed air processed by the cold dryer can only reach above 0°C, so the drying depth of the gas is far less than that of the suction dryer. In some special application fields, the use of cold dryers cannot meet the process requirements for air source dryness, such as pneumatic instruments, electronic factories, etc.
Refrigeration Compressors
refrigerant
Condenser: The function of the condenser is to dissipate heat and cool down the high-temperature and high-pressure refrigerant vapor discharged from the compressor, so that it condenses into liquid high-pressure refrigerant. The form is divided into air-cooled type and water-cooled type.
thermal expansion valve: The expansion valve used in the refrigeration dryer is an automatic expansion valve, and the entire series adopts the world's most advanced expansion valves from brands such as DANFOSS, ALCO, and Spoland.
Hot gas bypass valve: The equipment is equipped with large cooling capacity hot gas bypass valves from brands such as Danish DANFOSS, American ALCO, and Spoland. The energy adjustment range reaches more than 70%, ensuring the normal operation of the equipment under unstable load and low load conditions. The energy adjustment range is wider than that of similar products. Large (≤50% of similar products).
Sight glass: Sight glass for monitoring
1. The state of refrigerant in the liquid pipeline;
2. The flow state of lubricating oil in the oil return pipeline of the oil separator;
3. Water content in the refrigerant.
4. All large cube equipment are equipped with Danish Danfoss brand sight glass. There are many similar products on the market without sight glasses.
oil separator: The equipment is equipped with oil separators from brands such as Danish DANFOSS, American ALCO, and Sporland to ensure normal oil levels and normal operation in the compressor, reduce the amount of oil circulation in the refrigeration system, and improve the heat exchange efficiency of the evaporator and condenser. There are many similar products on the market without oil separators. (Available for equipment with more than 30 cubic meters)
Carburetor: The equipment is equipped with Danish DANFOSS, American ALCO, Sporland and other brand evaporators to ensure that the refrigerant passing through the evaporator is completely vaporized before entering the compressor, effectively preventing damage to the compressor from liquid shock. There are similar products on the market without a vaporizer.
(Available for equipment with more than 30 cubic meters)
1. Due to the narrow channel of the plate-fin heat exchanger, an HT-level filter must be installed in front of the cold dryer to prevent the heat exchanger from being blocked and unable to operate normally due to pipe corrosion and other problems.
2. The F1 type cold dryer does not have the remote transmission and remote control function. The F and E type cold dryers have dry contact remote control and MODBUS RS485 communication. The B type cold dryer does not have the remote transmission and remote control function ( 250 cubic meters and above adopt PLC control). 3. The ambient temperature of the cold dryer is generally between 0 and 38°C. When it is <0°C, it is generally not recommended to use a cold dryer. When it is >38°C, you need to pay attention to the heat dissipation problem of the cold dryer control box. (Especially when choosing the air-cooled type, the maximum operating ambient temperature is 50°C to ensure that the equipment does not trip, but the dew point will rise relatively as the ambient temperature rises.) 4. The air outlet dew point of the cold dryer is generally 2-10 ℃, if the customer requires a dew point <2 ℃, it is recommended that the customer choose adsorption products. 5. The outlet air temperature of the plate-fin cold dryer is generally 5-8°C lower than the inlet air temperature. If the measured dryer equipment is connected in series at the back end, it is recommended to use a B-type shell and tube cold dryer.
Hangzhou shanli purify equipment corporation
www.hzairdryer.com
Hangzhou Shanli Purify Equipment Corporation is a national high-tech enterprise that develops and produces compressed air purification equipment and other products. We have established customer service centers in Hangzhou, Shanghai, Beijing, Shenyang, Xi'an, Chengdu, Guangzhou, Jinan, Nanjing, and other cities, as well as a nationwide service network. Our products are sold to more than 20 countries worldwide.
Shanli has become a leading manufacturer and service provider of compressed air purification equipment in China.
BOGE America, Inc
BOGE America, Inc., Established in 1907 in Powder Springs, Georgia, USA, is a manufacturer specializing in industrial air compressors. The company offers a comprehensive product range that includes rotary screw compressors, piston compressors, high-speed turbo compressors, and compressed air accessories. It holds ISO 9001 certification, and its industrial air compressors find application in various industries, such as manufacturing, automotive, aerospace, and healthcare, providing essential compressed air solutions that enhance production processes, power tools, and numerous applications across a wide spectrum of industrial sectors. It offers, specialized air compressor solutions that support improved efficiency and stability in operations.
OMEGA AIR d.o.o. Ljubljana
Omega Air d.o.o. Ljubljana is an ISO 9001-certified manufacturer of air or gas treatment products and systems that was established in 1988 and located in Ljubljana, Slovenia. The company produces pressure vessels, nitrogen generators, and compressed air stations. It also offers electronic or mechanical condensate drains, automatic refrigerated compressed air dryers, and process filters. The company provides additional fabrication services including machining, injection molding for plastics, and PCB production for customers with unique project requirements.
Mikropor America, Inc.
Mikropor America, Inc. is based in Michigan City, Indiana, USA, and is a manufacturer of compressed air and air filtration products that was established in 2008 as a subsidiary of the Turkish company Mikropor Inc. The company offers high pressure and activated carbon compressed air filter models, air intake filters for use in generators or gas turbines, and water separators for separating particulates or water from compressed air. The company is ISO 9001, ISO 14001, and OHSAS 18001-certified, and chiefly serves clients in the industrial processing sector.
Ing. Enea Mattei SpA
Ing. Enea Mattei SpA is an ISO 9001, ISO 14001, and ISO 45001-certified manufacturer of rotary vane compressors that was established in Milan, Italy, in 1919. The company offers lubricated compressors for low-maintenance applications, energy saving compressors for sustainability-oriented projects, and specialized models manufactured to customer specifications. It also offers air treatment products such as condensate drains and separators for removing impurities from compressed air. The company's products are commonly used in industrial manufacturing, industrial processing, and automotive manufacturing operations.
