The purpose of humidification

According to the purpose of humidification, it can be broadly divided into two types: 1. Comfort Humidification According to statistical analyses from the international HVAC community, humans feel most comfortable and achieve the highest work efficiency when living and working in an environment with a temperature between 22°C and 26°C and a relative humidity ranging from 40% to 65% RH. Dry air, on the other hand, can lead to: A significant increase in the airborne dispersion of dust particles, causing dryness and itching of the skin, making people feel uncomfortable. Typically, such environments serve as breeding grounds for various bacteria, leading to colds, sore throats, and greatly increasing the risk of bronchitis and skin diseases (according to statistics, in China, the incidence of bronchitis during winter in northern regions is significantly higher than in regions like Hainan). This, in turn, results in higher rates of sick leave and indirectly affects productivity. 2. Process Humidification ①. Electronics, Optoelectronics, and Semiconductor Factories: Humidification helps prevent static electricity caused by excessively low relative humidity. Such static electricity can lead to equipment malfunctions and increased defect rates in products. In electronics, optoelectronics, and semiconductor factories, temperatures are generally maintained at a constant level around 22°C; therefore, year-round air conditioning and precise control of temperature and humidity are essential to prevent static electricity, condensation, corrosion, fiber breakage, and discomfort among workers. When relative humidity exceeds 60%, corrosion may occur; whereas below 40%, static electricity becomes a problem. Thus, before components enter cleanrooms, they usually need to be kept in specific temperature and humidity conditions to avoid condensation due to temperature differences upon entering the cleanroom, which could cause moisture damage or generate static electricity that easily attracts dust and impurities, thereby affecting product quality and functionality. ②. Hospitals, Operating Rooms, Intensive Care Units, and Rehabilitation Facilities: Proper humidity control not only reduces unpleasant odors but also enhances patients' physical and psychological comfort and accelerates wound healing. Generally, government agencies or relevant authorities have established standards or restrictions for air-conditioning environments in different areas of hospitals, as shown in the table below for reference:

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The purpose of humidification
The purpose of humidification

Basic Classification of Humidification

According to the humidification method, humidifiers are broadly categorized into steam humidifiers and mist humidifiers: 1. Steam Humidification: Generally speaking, the steam used in steam humidification systems is high-temperature steam, with a latent heat slightly higher than that of normal-temperature gaseous water. Therefore, after air is humidified by steam, its latent heat will increase slightly, causing the dry-bulb temperature of the space to rise by 1–2℃. Since the increase in the air’s dry-bulb temperature is relatively limited, steam humidification is also referred to as isothermal humidification. In a steam generator, liquid water is heated and vaporized into saturated steam. This steam is then directly distributed throughout the air-conditioning unit or ductwork via a steam distribution device. Subsequently, the steam fully and thoroughly mixes with the air, enabling the air to absorb moisture and thereby increasing its humidity level.

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Basic Classification of Humidification
Basic Classification of Humidification

Considerations for Selecting a Humidification Method

The key considerations for selecting a humidification method are listed below: 1. Low initial installation cost; 2. Low operating costs; 3. Energy efficiency; 4. Compact equipment size with high humidification capacity; 5. Low maintenance costs; 6. Integration with existing resources—for example, using an existing boiler as a power source instead of electricity, or leveraging existing purified water systems to eliminate conventional water treatment expenses... and so forth. 7. No dripping or condensation; The primary reasons industries choose steam humidification are: 1. High steam humidification capacity, enabling attainment of relatively high relative humidity levels; 2. High absorption efficiency; 3. Complete sterilization capability; 4. Easy humidification control—constant enthalpy humidification with rapid response; 5. Simple, clean, and aesthetically pleasing exterior design... and so forth. ※ Hospitals universally opt for steam humidification, primarily because steam humidification offers complete sterilization capabilities. ※ If a control valve is used to regulate the steam flow rate, it is crucial to carefully select the appropriate valve diameter and determine the correct CV value for the valve’s throat opening. The main reasons industries choose water mist humidification are: 1. During mist humidification, the process is isenthalpic, significantly reducing room temperature and substantially lowering the energy load on ice-water machines; 2. Simple installation and easy maintenance; 3. Relatively low initial installation costs; 4. Low power consumption of the humidifier unit; 5. Safety

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Considerations for Selecting a Humidification Method
Considerations for Selecting a Humidification Method

The three states of water

Water exists in three states: solid, liquid, and gas. In the humidification industry, the goal is to use external energy to convert liquid water into gaseous water and then, with the aid of external forces, deliver it to the space that requires humidification.

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The three states of water
The three states of water

Our recommendation

Humidification is the process of converting liquid water into vapor that can be absorbed by the air, and it involves a conversion of energy in the process. A humidifier is a system rather than just a single humidifying device; its operating conditions are crucial for proper functioning, making it essential to integrate it with existing resources. Of course, the precision requirements for humidity control also play a significant role in determining which humidification method to choose.

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Our recommendation
Our recommendation

Comparison between Two-Fluid Ultrasonic Spray Humidification Systems and High-Pressure Micro-Mist Humidification Systems

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Comparison between Two-Fluid Ultrasonic Spray Humidification Systems and High-Pressure Micro-Mist Humidification Systems
Comparison between Two-Fluid Ultrasonic Spray Humidification Systems and High-Pressure Micro-Mist Humidification Systems
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