What are the central air-conditioning air filters? Air conditioning design,The efficiency of the final air filter should be first determined according to the user's cleaning requirements,Then,Choose an air filter that protects,If this air filter is also protected,Then add air filters at its upper end.The air filters that play a protective role are collectively referred to as 'pre-air filters '.Clean Room end efficient (HEPA) air filter to protect the air filter before the efficiency specification is not less than F8;Ultra-efficient (ULPA) air filter optional F9 ~ Air filter for H11.The central air conditioner itself should be protected by an air filter with efficiency specifications not less than F5.In areas without sand and pollution,No pre-air filter can be set before F7 air filter;In the city's central air-conditioning system,G3 ~ F6 is a common primary air filter.What kind of efficiency level pre-air filter should be set up to protect the latter level air filter,This requires designers and field engin
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After decoration, I want to install a pre-water purifier In general, it is best to install. this is the first layer of protection and the most basic filtration. unless the quality of municipal water can be guaranteed, it is basically impossible in China, the installation of the front water purifier has a long life and high cost performance. It can protect and extend the life of PP cotton or other first-class filter elements of the terminal water purifier. The better pre-filter water purifier will basically filter out the water quality much better. for example, the type of pre-filter with the Ryder West level can basically put most of the water impurities (such as rust, aquatic animals and plants, residue, etc.) is filtered out in the first line of defense, which is the first barrier protection for domestic water. It is also the most important one. You can also install the front water purifier after decoration. However, it depends on whether the reserved space of the pipeline after entering the water gate valv
