Experimental Investigation of Low Flow Rate, Low Pressure Drop and Heat Transfer in Micro-Channel

摘要

The objective of the current experimental program is to generate data for liquid flow through micro-channels. The channel dimensions are 0.9 mm deep x 0.5 mm width. Rectangular seven micro-channels each of 70 mm long were cut on a stainless steel substrate (100 mm x 100 mm x 10 mm) by Electro Discharge Machining (EDM) technique. Covering the top with another plate formed the channels. The liquids used were ethanol and methanol as flow media. Pressure drop and flow rate data were measured and used as raw data to evaluate friction factors in the micro-channels. Transitions occur at lower Reynolds number (Re ~1200) than that in normal channels. Transition region lies in the range 1200