Dear friends,   We are extremely excited to invite you to visit SEMICON SEA 2025 and explore the cutting-edge technology and unlimited possibilities of the semiconductor industry with KLC!    Date:  20-22 May 2025  Location:  Sands Expo and Convention Center, Singapore  Booth： L3201   Let us meet at SEMICON SEA 2025 and open a new chapter in the semiconductor industry together!  

As a vital part of the medical field, the design of the air supply system of the clean operating room is directly related to the safety and efficiency of the operation. However, the existing air supply devices have some obvious limitations, including insufficient anti-interference ability and difficulty in meeting the personalized needs of doctors and patients for environmental temperature and humidity. In response to these problems, there is an innovative air supply solution-wide-mouth low-speed air curtain different temperature and speed air supply system.    Analysis of existing problems      Currently, the laminar air supply device of the clean operating room faces two major challenges in practical application:   Although the laminar air supply device of the clean operating room is originally designed to create a sterile environment, it is often discounted due to the interference of the surrounding airflow. This interference not only weakens the scope of the clean area, but also affects the ability of the surgical area to maintain a sterile state, which is a problem that cannot be ignored for surgical environments that require extremely high cleaning standards.   On the other hand, the air supply system of the operating room often adopts a unified temperature and humidity setting, lacking the ability to adjust it in a personalized manner. This "one-size-fits-all" air supply method cannot take into account the diverse needs of surgical staff and patients for environmental comfort, especially in temperature and humidity sensitive surgeries, which may have an adverse effect on surgical results and patient recovery.    Limitations of traditional countermeasures    In order to resist the intrusion of external airflow, one of the traditional solutions is to add enclosures around the air supply device. This design can block the surrounding airflow to a certain extent and protect the purity of laminar air supply. However, this method is not perfect. Too high enclosures may hinder the operation of the surgical team and affect the smoothness and efficiency of the operation.   Another traditional countermeasure is to use high-speed air curtains to reinforce the air supply airflow in order to improve its anti-interference ability. Although this can stabilize the air supply to a certain extent, the high-speed airflow may cause discomfort to the personnel in the operating room, especially in operations that require delicate operations. Excessive wind speed may interfere with the surgical process and even affect the results of the operation.    Proposal of innovative solutions      Based on an in-depth analysis of the limitations of the existing clean operating room air supply system, an innovative and breakthrough air supply system design solution is proposed.     This system cleverly arranges three independent and collaborative air supply boxes directly above the operating table. The central box plays the role of main laminar air supply, focusing on providing warm and low-speed clean air to the surgical area to ensure the sterility of the surgical site.   The boxes on both sides are equipped with wide-mouth low-speed air curtain air supply devices, which create a comfortable working environment for surgical personnel with lower temperature and humidity and higher wind speed. This ingenious design of different temperatures and speeds not only significantly improves the anti-interference ability of the air supply system, but also more finely regulates the microenvironment of the surgical space, meets the personalized needs of the surgical site and surgical personnel for temperature and humidity, and thus provides a strong guarantee for the smooth progress of the operation.     The middle box of the new air supply system is responsible for providing circulating air with higher temperature and lower wind speed to form a sterile and dust-free local environment, while taking into account the comfort of the anesthesiologist. The air curtain air supply devices on both sides provide clean air with lower temperature and higher wind speed to meet the dynamic needs of surgical personnel and effectively eliminate dust and bacteria during the operation.   In addition, the system also achieves precise control of the air supply temperature by configuring different air handling units to meet the needs of different types of surgeries. For example, in cardiac surgery or brain surgery, the system can quickly adjust the air supply temperature to meet the strict requirements of temperature changes during surgery.   The wide-mouth low-speed air curtain variable temperature and variable speed air supply system is not only innovative in technology, but also has significant advantages in practical applications.   It improves the cleanliness of the operating room and the comfort of the surgical staff by optimizing the structure and air supply mode of the air supply device, while reducing energy consumption, which helps promote the sustainable development of the medical industry.

In air conditioning systems for cleanrooms and other high-cleanliness environments, fan filter units (FFUs) are one of the core devices for achieving air cleanliness control. FFUs ensure the purity and uniform distribution of indoor air through their efficient air filtration capabilities and stable airflow organization, and work together with dry coils (DCs) and other components to maintain the environmental conditions of cleanrooms.      High-efficiency air filtration and airflow organization    FFUs have built-in high-efficiency filters that can remove particles in the air, including dust, bacteria, and viruses, to ensure that the air delivered to the cleanroom meets high cleanliness standards. At the same time, FFUs form stable vertical laminar or turbulent airflow organizations through the operation of their built-in fans to avoid local contamination. This stable airflow organization is essential for maintaining the cleanliness of cleanrooms, especially in the semiconductor manufacturing and biopharmaceutical fields where cleanliness requirements are extremely high.      Collaborative work and application scenarios  In dry coil systems, FFUs work together with dry coils (DCs) and other components (such as fresh air units MAUs). MAU is responsible for introducing and processing outdoor fresh air, removing particulate matter through primary and medium efficiency filtration, and processing the fresh air to the specified temperature and humidity.   The fresh air treated by MAU is mixed with part of the return air, filtered by FFU and sent to the clean room. After the indoor air is cooled or heated by the dry coil, it is circulated to the return air channel again and mixed with the supplementary fresh air to form a closed-loop air circulation system.   FFU runs continuously to maintain the number of air cycles and ensure the cleanliness of the indoor air; the dry coil adjusts the cold water flow or temperature according to the temperature sensor, and only processes the sensible heat load to avoid mutual interference in temperature and humidity control. This design with clear division of labor improves the overall performance and reliability of the system.   Among the many FFU products, KLC FFU is an excellent choice in the market with its excellent performance and flexible design. KLC FFU uses high-efficiency filters with KLC's exclusive technology, which can achieve high-efficiency air filtration and ensure high cleanliness of indoor air.   Its compact design is easy to install and maintain, and it has the characteristics of low noise and high energy efficiency, which can meet the requirements of different cleanliness levels.   KLC FFU also has flexible installation methods and intelligent control options, which can realize single-unit manual control or multi-unit group monitoring, and can adapt to the needs of clean room applications from small to large scale.   KLC FFU performs well in practical applications, especially in the fields of semiconductor manufacturing, biopharmaceuticals and precision electronic assembly, providing users with efficient and reliable air purification solutions. Its efficient filtering performance and stable airflow organization ability can effectively prevent condensed water from contaminating wafers, ensure the sterile environment of drug production, and ensure the accuracy and stability of the equipment.   KLC FFU's low noise operation and high energy efficiency design also make it perform well in clean rooms with strict environmental requirements, providing users with an ideal air filtration option.   As the core air filtration equipment in the dry coil system, FFU provides a reliable solution for high-cleanliness environments such as clean rooms through its efficient filtering capacity and stable airflow organization. Its collaborative work with dry coils and other components further optimizes the performance and reliability of the system.   In the fields of semiconductor manufacturing, biopharmaceuticals and precision electronic assembly, FFU has become a key equipment for maintaining a high-cleanliness environment to ensure the efficient and stable operation of the production process.

With environmental pollution becoming increasingly serious, air quality issues have become the focus of global attention. Recently, a research result published in the journal Nature has brought us good news - scientists have used nanocarbon materials to improve air filters, effectively improving the adsorption and detection capabilities of particulate matter in the air.   This breakthrough not only provides new ideas for improving air quality, but also brings hope for human health and environmental protection.     Air pollution, a global problem, not only threatens human health, but also has a serious impact on ecosystems and the earth's climate system. From industrial emissions to traffic exhaust, the impact of pollutants generated by human activities on air quality cannot be underestimated. Among them, particulate matter (PM) has attracted much attention due to its potential harm to human health and the climate system.     In this study, scientists turned their attention to nanocarbon materials, including carbon nanotubes (CNTs), reduced graphene oxide (r-GO) and graphite phase carbon nitride (g-C3N4). These materials have shown great potential in the field of air purification due to their unique physical and chemical properties. The research team explored the effects of these nanomaterials on improving the adsorption efficiency of filters by applying them to filters for air particle monitoring equipment.     The experimental results are encouraging. Through electron microscope images, we can see that the diameter of CNTs is between 40-50 nanometers and the length is about 20 microns. While g-C3N4 presents a typical layered stacking structure, r-GO nanosheets show an irregular folded layer structure. The high specific surface area and tunable surface chemical properties of these nanomaterials make them excellent in adsorbing heavy metals in the atmosphere.     In the study, scientists used three techniques: energy dispersive X-ray spectroscopy (EDX), inductively coupled plasma mass spectrometry (ICP) and laser induced breakdown spectroscopy (LIBS) to analyze the filters. The results showed that the filters modified with nanomaterials performed far better than unmodified filters in adsorbing particulate matter in the air. In particular, CNTs, due to their high active surface area and precise pore size, showed excellent adsorption capacity.   In addition, the application of LIBS technology provides a new sensitive method for heavy metal monitoring. Compared with the results of traditional ICP analysis, LIBS showed high consistency in the analysis of sodium, zinc and copper, although there were some differences in the analysis of manganese. These findings further confirm the potential of nanomaterials in improving filter efficiency.     This study not only proves the application prospects of nanocarbon materials in the field of air purification, but also provides a new direction for future environmental governance. With the advancement of science and technology and the deepening of research, we have reason to believe that these nanomaterials will play an increasingly important role in environmental protection and human health.     Air pollution control is a protracted battle, but every technological advancement brings us new hope. The application of nanotechnology has allowed us to take another solid step on the road to fighting air pollution. Let us look forward to these innovative technologies entering our lives as soon as possible and contributing to our blue sky and white clouds.   References: Nano carbon-modified air purification filters for removal and detection of particulate matters from ambient air