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From March 31 to April 2, 2026, ISH China & CIHE 2026 – China International Exhibition on Heating, Ventilation, Air Conditioning, Sanitary Ware and Comfortable Home Systems, widely known as the Beijing Heating Exhibition, opened at the China International Exhibition Center (Shunyi Hall) in Beijing.
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The cooling circulating water system is an open system, dust and impurities in the air and scale in the pipes will enter the water and deteriorate the water quality; more impurities will easily clog the copper tubes of the heat exchanger, reduce the heat exchange rate, and affect the effect of the entire cooling system; shallow sand filters can filter impurities in the water, reduce turbidity, reduce the blockage rate of copper tubes, and maintain the normal operation of the cooling system, so cooling circulating water systems need shallow sand filters.
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The principle of the semi-volumetric heat exchanger is to increase the flow of the heat medium and hot water outside the tube, increase the flow of the heat medium and hot water, and transform the laminar heat transfer into turbulent heat transfer; while the volumetric heat exchanger completely separates the heat transfer part from the heat storage part, which not only improves the heat transfer effect, but also eliminates the cold stagnant water area when the heat storage part stores all the hot water.
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