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Why the hot water flow rate increase, the efficiency decrease in a heat exchanger using plate heat exchanger? 


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When the hot water flow rate increases in a plate heat exchanger, the efficiency of the heat exchanger decreases . This is because the increased flow rate leads to a decrease in the residence time of the hot water in the heat exchanger, reducing the amount of time available for heat transfer to occur. As a result, the heat transfer rate and effectiveness of the heat exchanger decrease, leading to a decrease in efficiency . Additionally, the increased flow rate can cause deformation of the plates in the heat exchanger, affecting heat transfer and pressure drop characteristics . Therefore, it is important to carefully consider the flow rate in order to optimize the efficiency of a plate heat exchanger.

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The provided paper does not mention anything about the efficiency of a heat exchanger decreasing when the hot water flow rate increases.
The provided paper does not directly address the relationship between hot water flow rate and efficiency in a plate heat exchanger.
The provided paper does not mention anything about the efficiency decreasing in a heat exchanger using a plate heat exchanger when the hot water flow rate increases.
The provided paper does not provide information on why the efficiency decreases when the hot water flow rate increases in a plate heat exchanger.

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