Cleaning of common sense
Import method of chemical cleaning of central air conditioningAt present, many hotels and restaurants have been widely used in the building of central air-conditioning equipment. For management and technical reasons, many air conditioning equipment with varying degrees of corrosion and dirt, causing the discharge temperature increases, cooling capacity is declining, and seriously affect the safe operation of the equipment. Cleaner here is about the quality of imported air conditioning system's corrosion and fouling, corrosion descaling through chemical cleaning, operation of the air conditioning system was back to normal, raised some questions below for reference and discussions.
Device-scale parts and cleaning methods in order to achieve the saving water, saving energy and improving the cooling effect of the air conditioning equipment, to the cooling water system of central air conditioning, chilled water systems, fin into three parts and a full range of cleaning the surface. Due to the various parts of the environment and conditions vary greatly, and the type of dirt and rust-also very different.
For cooling water systems, notably scaling problem, scaling is attached on the heat transfer surface of a layer of insoluble salt or oxide crystal growth. Its production, mostly due to the deep contraction ratio of circulating cooling water and the condenser heat-exchanger water temperature rise in solubility of salts in the water are affected by. The chilled water is in a closed cycle, the water does not evaporate, circulating water concentration, there is no oversaturation problem of insoluble salts, water temperature is low, so chilled-water system can be said to not scale growth conditions. Chilled water system is mostly clay dirt, rust, it is generated by the corrosion of water oxides and foreign matter mainly for clay, equipments introducing grease gathering of loose, porous or gel-like pose, you can often see a lot of microorganisms. Chemical cleaning of the chilled water system operation is to remove equipment and piping the oil on the water surface, rust and alkali washing in a large proportion of its chemical cleaning operation, thereby reducing the potential risk of corroding metal.
Clean cooling water system, can play a role in water and energy saving of chilled water systems. But serious effects equipment cooling effect of air conditioner fin surface dirt. Aluminum fin surface of the air conditioner is in the air, aluminum is quite stable in the air, regardless of rust problems. Fin is mostly between large amounts of dust, soot and various types of fibrous material jams, fume dirt is more serious for the restaurant, which will seriously affect the cooling effect. Aluminum fins are thin, fin-gap small, low intensity, slightly deform easily, especially for the ceiling type air handler fan-coil air conditioners and cleaning operations extremely difficult, considerable if removed for cleaning.