Abstract
Maldistribution of fluid among parallel channels is one of the main issues in applications of brazed plate heat exchangers (BPHEs). This paper presents an experimental investigation of the single-phase flow distribution in BPHEs and its impact on the heat exchanger performance. In the experiments, water is used as the working fluid on both sides. Probes are placed into the headers of the BPHEs to measure the pressure change along the headers, as well as the pressure drop and temperature change across different channels. The results show that the maldistribution is more significant as the number of plates and total mass flow rate increase. The entrance effect would decrease the flow rate in first several channels. The maldistribution in channel flow rate results in the non-uniformity of the channel heat capacity.
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