HVAC--The heat exchanger HVAC manufacturer
Closed cooling water system
In the air conditioning project (especially large central air conditioning project), the use of closed cooling water system has great benefits. Open cooling water system is simple and practical, low cost, but there are some problems such as poor water quality, cooling water seriously polluted, microbial reproduction and other issues. These further result in corrosion and scaling within the system, affect use efficiency and shorten the unit and pipeline life cycle. The use of closed cooling water system not only can overcome the above shortcomings, but also do 'economic cycle' in the excessive season or winter. It can use natural energy effectively, making the cooling water directly to the air conditioning water pipeline system. But this system is also still with high cost in a closed cooling tower: because of the very heavy tube it needs a strong foundation or stent especially in the roof will bring some difficulties in the structural design, the cost of equipment base increases. In the winter tube bundles will be frozen. At present, some manufacturers produce sealed evaporative cooling towers, which have a compact structure, small size, low noise, flexible adjustment and other characteristics, but still the price is quite high.
Another more economical approach is to use an open cooling tower connected to a plate heat exchanger, and a closed cooling water system is between the plate heat exchanger and the condenser of the freezer. As a result of the use of plate heat exchanger, you can get a very small heat transfer temperature difference. If use low-quality cooling water such as river water or seawater, it is quite appropriate to use a plate heat exchanger. Most of the plates are made of alloy steel or soft metal, which has only increased the cost compared with stainless steel. This type of cooling water system has been widely used abroad.
Tag:Heat Exchanger HVAC