While going through the research paper Pressure, Heat transfer coefficient, Inlet and outlet temperature of fluid, velocity of fluid, Reynolds number, etc are the parameter to be needed for study. Any other parameter (i.e. electrical field or else) which is most important for study; kindly suggest by your valuable guidance..
many researchers are investigating the micro channel heat transfer with a focus on the thermal parameters. This is not enough. in addition to the heat transfer, you must also consider the hydrodynamics, i.e., the change in the losses in terms of pressure drop. from the pressure drop, evaluate the friction factorGet the heat transfer fro the flow rates and the temperature measurements, get the convection heat transfer, and then get Nusselt number. Also, evaluate Re. compare the new Nu with the old Nu, as function of Re. Now, you need one indicator to combine the Nu ratio to the friction ratio. I named this indicator as [Hydro thermal performance indicator]. this is the general procedure. If your case has special features, you need to think how to involve them. Hope this assist. If you need more, do not hesitate to contact me.
If you want to consider different kinds of fluids such as water, water-glycol or refrigerant that will give you the luxury of having multiple Pr numbers as another parameter. This would be very applicable and useful to the micro heat exchanger industry. Also, you can look at different surface roughness and correlate that to the heat transfer coefficient of the internal convection. If you want to add free convection to your work you will have Gr to consider as well. Finally, Changing the fluid type or the channel characteristic length will enable you to vary Kn and there correlate that to the pressure drop, Re, Nu.
If you are caring about the temperature distribution and you are using thermocouple, please make sure of the diameter of the junction with respect to the channel pitch in addition to the radiation effect. For fluid flow take care of boundary layer growth and the proper way you are relating Nu with Re and Pr numbers.
It is necessary to take account of the heat arising as a result of friction, which has a significant impact on the cooling (or heating) effect of the fluid, streamlined wall. It is therefore necessary to take into account the value of the dimensionless parameters Pr,Ec.
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