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Preair Participated in the 2023 AHR EXPO
2023 AHR EXPO Held in the Georgia World Congress Center, USA The Air-Conditioning Heating Refrigeration Exposition (AHR EXPO) is the largest, most important, and most influential and professional exhibition in refrigeration, HVAC, and pump valve products in the United States. The International Ex...Read more -
Adjustment and Maintenance of Thermal Expansion Valve
The thermal expansion valve controls the opening of the expansion valve through the superheat of the gaseous refrigerant at the evaporator outlet, so it is widely used in the non-full liquid evaporator. According to the different balance methods, the thermal expansion va...Read more -
Introduction to Wet Air and Psychrometric Diagram
In addition to dry air, the air also contains water vapor. We usually call the mixture of dry air and water vapor wet air (air for short). The content of water vapor in the wet air is minimal. It comes from the evaporation of water on the surface of oceans, rivers, and lakes, and the physiologica...Read more -
Air Compressor: An Important Component of Dehumidifier
The humidity of the air changes with the change in the air state. When the air is compressed, its temperature rises and the relative humidity decreases. When the compressed air expands and the temperature of the air decreases its relative humidity increases, and there wi...Read more -
Instructions for Dehumidification of Indoor Swimming Pools
With the improvement in life quality, many people choose indoor swimming pools for summer heat relief. At the same time, people pay more and more attention to the quality of indoor air and water in swimming pools. Generally speaking, the temperature of the indoor thermostatic swimming pool is 22-...Read more -
Differences Between Using an Air Conditioner and a Dehumidifier for Dehumidification
In summer, it is rainy and humid in some region. At this time, dehumidification is very necessary.The air conditioner has a dehumidification mode. Many dehumidifiers will appear when searching for dehumidification on the e-commerce platform. Is there any difference between using an air conditione...Read more -
A Comfortable Humidity is Important for the Human Body
The air humidity is particular, too dry and too wet are not appropriate In hot summer, many people will feel oppressive and weak, while in winter, many people will feel dry and burning. Most people think that this is caused by “temperature”. In fact, it is not only the temperature tha...Read more -
Humidity is Closely Related to the Covid-19 Epidemic
A study conducted at the early stage of the COVID-19 epidemic in New South Wales found that lower air humidity was associated with an increase in positive cases – a decrease of 1% in humidity would increase the number of cases by 6%. This study was recently published in the journal of Trans...Read more -
Why Humidity is Important in Hospital?
The ICU (intensive care unit) is an independent department that focuses on the treatment of critically ill patients and provides timely, comprehensive, systematic, and continuous monitoring and treatment for critically ill patients. ICU is the gathering place of critical...Read more
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