I have some problem at evaporator such as flow side non-uniform distribution. I want to design a new distributor in detail. Normally I have been using nozzle type distributor but I don't ensure desirable pressure drop and thereby distribution. ( It is clear from thermocouple result which is located circuit outlet and capacity reduction both). As a result, this design isn't easy due to two phase flow in distributor. I want to learn your advices and opinions. Thanks.
I want to approach analytical and numerical both. I have added mono-phase flow at Autodesk CFD. I have been dealing to solve two phase problem at this ptogram. But more important thing is analytical approach for me. Thanks
There is no easy way to analyze it with CFD. When you have two-phase flow, this complicates the analysis. Nevertheless, if you have time, I would encourage you to carry on. If you don't, I would advice to use some simple 1D transient mathematical model, and experimental testing. For the design itself, I would suggest the use of individual short tubes or capillary tubes for each evaporator circuit. I believe this approach could make easier to equalize the parallel flow, and "compensate" for the airflow unequal distribution.
Dear Mr. Neto, I have been making a effort to solve air side and flow side maldistribution for a long time. For good distribution of two phase flow, I have to determine the distance of distribution point as is stated at below picture. If this distance is farther or closer than expected, it will not ensure the desired pressure drop. If possible, I would be grateful, if you could share mathematical models about this topic. Thank you very much for your helping and advices.
This study is quite important for me in terms of experimental approach. Thanks a lot Dear Sir.
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