IAQ Series： Fresh air intake filter
Outdoor air has various pollutants and it could badly affect IAQ and health of occupants if it is not properly filtered before entering into a building. Outdoor air contains various pollutants especially in busy commercial zones. It contains high levels of particulate matter (PM), NOx, SOx, pollen, etc. If it is not properly filtered before […]
Use two stages filtration for Air Handling Unit (AHU) in office buildings
Malpractices of application of air filters (2) Use metal mesh filter for Fan Coil Unit Pre-filter (metal mesh or panel filter) with primary filter (bag filter or panel filter) are commonly used on AHU at office buildings in Hong Kong. It is believed that the pre-filter could extend the working life of primary filter at downstream. […]
Use metal mesh filter for Fan Coil Unit
Malpractices of application of air filters(1) Use metal mesh filter for Fan Coil Unit Metal mesh air filter is commonly used as an air filtration device for fan coil unit (FCU) in Hong Kong. Is it the only choice that we can take? As shown in the graphs below, metal mesh filter has very low filtration efficiency (>27%) for […]
Prevent Omicron cross-infection in Hotels
Fears over an Omicron outbreak in Hong Kong grew. Recent cases from restaurant to kindergarten, and now hotels are also facing a big concern about possible transmission. There may be COVID19 cross-infection at the Yau Ma Tei hotel, which affected guests staying in four different rooms across two separate floors. HKU microbiologist Yuen Kwok-yung believes […]
Keep Omicron away from our students and staff – Replace the filters
To prevent and control coronavirus disease spreading in schools, Hong Kong government has announced the suspension of classes in kindergartens and primary schools from Friday through the Lunar New Year holiday. Suspension will not relieve the concerns of parents and students. Hundreds of thousands of students will head back to school after CNY holiday. They […]
The simplest way for creating a Safe Workplace on the fifth wave of COVID-19 outbreak
Apart from increasing the air changes and installation of air purifiers, there are simpler and cost-effective ways to fight against the fifth wave of COVID-19 outbreak. A Hong Kong born technology start-up, Nanofil Filtration Technology Ltd., is working hard to expand the range of sizes of their filters for window type and split-type air conditioners […]
How to achieve Lower Data Center PUE and Better IAQ?
It has been reported that data centers account for up to 1.5% of global electricity use and that may be as high as over 2.5% in some sophisticated regions like U.S.A. About 35% – 40% or more of energy consumption of a data center goes towards cooling IT equipment. While data center infrastructure consultants and […]
Problems of IT equipment failure in data center without identifiable cause
Gaseous contamination could be one of the possible causes of the problem. When the minutest layer of corrosion, due to airborne contaminants, builds up on the circuit surfaces of electronic systems at Data Centers, Server Rooms, Control Rooms, it aggravates electrical resistance and decrements equipment performance, and possibly lead to equipment failure if the problem is […]
