Turbulent heat transfer in rectangular ducts with repeated-baffle blockages

Abstract An experimental study is conducted to investigate heat transfer and pressure drop in a rectangular duct with repeated-baffle blockages. The baffles are arranged in a staggered fashion with fixed axial spacing. The transfer coefficients are evaluated in the periodic fully developed and entrance regions of the duct. The presence of the baffles enhances these coefficients. The entrance length of the duct is substantially reduced by the baffles. Finally, pressure drop and heat transfer data are employed to evaluate the thermal performance of the duct.