The earliest materials used in the cooling tower are wood only. As the wood is easy to get from the cooling tower to the 20th century, 60 years, the cooling tower of the filler is almost entirely made of wood.
Redwood due to its anti-corrosion properties, is the most commonly used materials for early cooling tower filler. Growing long mahogany shape straight and strong, long life, easy to use, so the price is higher. Later, the old mahogany began to short, and the price did not
Breaking up. And the growth of short red mahogany can not meet the requirements, some with the new mahogany for the material tower can not even be built up. Douglas fir has replaced the mahogany for some time. However, although Douglas fir has a straight shape, but its density is too high, can not be a good absorption of preservatives, in the cooling tower of the internal environment is very easy to produce pollution. Some damage can not be seen with the naked eye, they will make the wood holes and become fragile. In the cooling tower, there is often a very large concentrated load, and the wind load generated by the storm or hurricane, will produce a lot of external pressure on the cooling tower, this low-strength wood will bring disaster to the cooling tower s consequence. People began looking for new reliable alternative materials.
In the 1950s and 1960s, asbestos cement sheet was widely used as a material for cooling tower filler. This material has a good anti-corrosion, but it was found that asbestos cement in the processing and production process harmful to the environment, so the application of this material is gradually reduced, some countries have been disabled.
7O years or so, the emergence of plastic filler is the development of a major innovation tower. The first application of plastic filler is in the heating ventilation and air conditioning industry, and later applied to the refining and power plant industry. This filler is characterized by good corrosion resistance, can be long-term use. Plastic film packing is a major innovation in the history of cooling towers, because it increases the water and air contact area, which has better cooling capacity. However, in the cooling tower under high temperature and humidity working conditions, the plastic filler in the work of about 3 years after the aging deformation occurs, affecting the cooling efficiency. And winter icing will also have a greater impact on the plastic filler, icing caused by increased load, the ice will be small pieces of packing pulled out from the grid, resulting in a lot of filler debris, blocking the filter or condenser, the impact Economic operation of the unit.
In recent years, ceramic fillers have been used in power plant cooling towers L3J. Ceramic filler is characterized by anti-aging, less prone to geometric deformation, not brittle, and anti-corrosion, acid and alkali resistance. This filler is also a feature of the antifreeze is very good, ~ l5 ℃ soak 2h, melt 2h (room temperature water), repeated 5O times not crack. Therefore, the ceramic filler life is relatively long, the service life of the design time of 3O years. The initial investment of such a filler is relatively large, the crew service 3O years do not have to replace the filler, running maintenance and repair costs compared to other materials are relatively low.
For more information, please visit our website: www.coolingtowerfiller.com, or contact us with E-mail, our E-mail address is rask@coolingtowerfiller.com, you can also chat us straightly on whatsapp: 008618330029204
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