Heat transfer coefficient of plate heat exchangers
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Dear experts, I have a question. It was my first time coming into contact with plate heat exchangers used for heat exchange between water and flue gas; one manufacturer reported a heat transfer coefficient of over 7 thousand, while another manufacturer cited a value of over 3 thousand. Which one is more reliable?
Are there no units after the data? ? ? No other conditions were given either! How: L
Check with the manufacturer! Alfa Laval’s heat transfer coefficient is more than twice that of domestic products, so the performance is definitely guaranteed!
From the formula for the overall heat transfer coefficient, 1/K=1/a1+Rs1+b/r+1/a2+Rs2, it can be seen that the calculation of the heat exchanger depends on the properties of the media on both sides, as well as the wall thickness and material used. Once the media are fixed, what matters is whether the material choices and wall thickness designs for the two heat exchangers are consistent Based on personal experience, the value is around 3000, which is somewhat reliable; it’s higher than the normal value.
Can the heat transfer coefficient for heat exchange with gas be this high? Be cautious.