A dairy company uses a 5㎡ spirally wound tube heat exchanger to replace the original 10㎡ plate heat exchanger to heat high-temperature water for the sugar-making section, which greatly shortens the original temperature rise time and realizes instant heating without waiting for temperature rise. At the same time, it solves the problem of frequent leakage of plate heat exchangers requiring frequent maintenance. More importantly, it saves nearly 15% of steam consumption, which can save users nearly 100,000 yuan in steam costs throughout the year.