At present, many hotel restaurants, office buildings or other building blocks have been widely used central air conditioning equipment. Because of management and technical reasons, many air-conditioning equipment have different degrees of rust and dirt generated, causing the compressor exhaust temperature, cooling capacity continues to drop

Drop, seriously affecting the safe operation of equipment.

For cooling water systems, scaling problems are prominent, and scaling is the growth of an insoluble salt or oxide crystal attached to the heat exchange surface. Its production, mostly due to the cycle of cooling water depth multiples and condenser heat exchange water temperature

Increasing salt solubility in water is affected. As reaction: C + 2HCO3 = CaCO3 ↓ + CO2 ↑ + H2O moves to the right due to temperature increase. So that the supersaturated insoluble calcium carbonate in the heat transfer surface crystallization. Fouling affects the flow of cooling water and a thin layer of dirt can cause a sharp drop in heat transfer rate. Chilled water is circulated in a closed system, the water does not evaporate, the circulating water does not produce concentration, there is no problem of supersaturation of insoluble salts, and the water temperature is also low. Therefore, the chilled water system can be said to have no scale growth conditions. Chilled water system mainly produces sludge scale, scale, which is produced by the corrosion of aqueous oxide and foreign substances mainly sticky mud, grease and other equipment brought together from the accumulation of loose, porous or gel-like composition, often See a large number of microbial sources.