A new type of perforated-plate heat exchanger with crosscut fins is proposed. The proposed heat exchanger is made up of perforated plates separated by spacers. The perforated plates have crosscut fins that are oriented 90° to the axis of flow, and the angle between the fins in consecutive perforated plates can be varied. Experiments were performed to investigate the heat transfer and the pressure loss in the proposed heat exchanger. The following results were obtained. (1) Calculated overall heat transfer coefficients are almost the same as measured heat transfer coefficients for Reynolds numbers above 60. (2) The coefficient of pressure loss is constant for Reynolds numbers above 60. (3) The spacer thickness and the orientation angle of alternate perforated plates don't influence the coefficient of pressure loss.
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