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Investigation into flow boiling heat transfer in a minichannel with enhanced heating surface

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Figure

Figure 1:The schematic diagrams of the test section: #1-minichannel, #2-heating foil, #3-liquid crystal layer, #4a,b-glass sheet, #5-channel body, #6-front cover, #7-thermocouple
Figure. 3: The schematic diagrams of the main systems at the experimental stand: #1-test section,#8-pressure regulator, #9-inverter welder, #10-shunt, #11-ammeter, #12-regulator, #4-tube-type heat exchanger, #5-filter #6-rotameters, #7-deaerator, #2-rotary pump,#3-compensating tank/pressure voltmeter
Figure 4: The diagram of the experimental data and image acquisition system: #1-test section,#2-digital camera,#3,5-lighting system,#4-digital SLR camera, #6-data acquisition station, #7-laptop
Figure 5: Colour heating foil images (a) and the corresponding two-phase flow structure images (b) while increasing (settings #1-#22) and later decreasing q(settings #23-#33) heat flux supplied to the heating surface; experimental parameters: u=0.14 m/s, G=240 kg/(m2s), pinlet=124 kPa,��Tsub=48 K, V= 7.71�104�3.17�105 kW/m3, qw = 7.84�32.22 kW/m2
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