Descaler for hot water generator tank and plate heat exchanger
Hot water generator tanks in central mechanical rooms are main supplier of domestic hot water. The hot water generator includes a galvanized tank, generally 600 liters to 5,000 liters and copper coils that are placed inside the tank and heat or steam from boiler runs into the copper coil. The domestic cold water, which is generally hard, enters the tank and is heated in contact with copper pipes, and then flow out of the tank for consumption. The domestic circuit is open, so the water always enters the tank or plate heat exchanger and after getting warm, a large amount of calcification happens on the surface of the coil. The accumulation of heavy carbonate and silicate scales on the coil does not allow the heat to flow into the domestic water, so over time, the heating temperature of the domestic hot water decreases. At the peak of consumption load, the hot water generator is not able to provide hot water, and the temperature fluctuation of the hot water and insufficient hot water are the result of limescale problems on the coils. Consequently the tank should be opened and cleaned periodically. Hydroflow descaler is the best green technology to protect the water supply system and copper coils and fixture units against calcification, which, by sending harmless radio waves, protects the whole hot water pipes and hot water generator tank or plate heat exchanger. The best models for the domestic hot water application are the HS-38, HS-40 or the C series.
Watger Qeshm Co. is an exclusive agent of industrial, agricultural and road construction machinery such as asphalt roller, road cutter and Wirtgen asphalt cutter. The administrative building was opened in 2014 next to Azadegan high way. The administrative building has a central mechanical room which is equipped with two 500 liter hot water generator tanks. The tanks are heat up with copper coils. Generally, limescale buildup in domestic cold and hot water pipes and water tanks are very common in facilities. The domestic water due to health reasons could not be softened by salt water softeners. Thus the amount of scale build up on the surface of cupper coils is considerable. The traditional way to fight with limescale is shutting down the hot water tank and removing coils and performing acid wash. This process happens periodically after hot water temperature drop. Cupper’s coils are being washed by acid and doing physical cleaning. On October 2014 2 units of HydroFlow HS38 were installed on Hot water tanks to protect the cupper coils from limescale buildup.
Pictures below clearly show the effectiveness of HydroFlow water conditioner after 4 years of non-stop working. Coil inlet and outlet temperature including tank’s hot water temperature maintain the same from the time of installation. Limescale reduce the heat transfer and accordingly hot water temperature. HydroFlow water descaler is second to none