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Questions related from Ergin Bayrak
We are gonna built an experimental setup about the flow of supercritical CO2 under constant heat flux in stainless steel circular microtube (0.5 mm diameter and 300 mm length). It will be placed...
09 September 2019 2,011 5 View
When the buoyancy effect is significant in supercritical fluids passing in the tube, some eddies can form in any location of tube, especially at the vicinity of supercritical temperature. So, what...
08 August 2019 9,973 2 View
We have been trying to build a new experimental setup in order to investigate the thermal-fluid characteristics of supercritical CO2 in the microtube. We want to be sure that everywhere of test...
03 March 2019 2,912 1 View
We have recently designed an experimental setup to investigate the detailed thermofluidic mechanism of near-critical CO2. We need to pump, ensuring low flow rate, high operating pressure and also...
07 July 2018 6,591 4 View
Hi, I have recently been trying to define my Phd topic in the field of near critical CO2 condensation in small scale channels. We have a CO2 test rig, which can be performed the performance test...
02 February 2018 5,227 1 View
I have a rectangular microchannel. There is some corrugated protrusion at the local area of this channel. I couldn't form the boundary layers with O-grid (in ICEM CFD)to this corrugated...
09 September 2017 3,157 0 View
Nowadays, I have been modelling a 3-D cooling plate including rectangular water channels (height=1 mm, width=0.5 mm) for Li-ion battery via Ansys Fluent. Also, there are the different type of...
06 June 2017 8,957 4 View
I have captured photographes at windward of fin and tube heat exchanger during frosting test and processed these images via Matlab Image Processing Toolbox and determined frost thickness value by...
05 May 2016 4,896 1 View
Hi Dear Colleagues, As you know, refrigerant two phase distribution at evaporator is big problem because of the fact that it can cause significant capacity reduction unless used optimum...
11 November 2015 8,537 1 View
Dear collegues, I have been researching the damage of H2S on copper fins and precautions that have to be taken. What is the max. recommended H2S ppm in the air inlet of heat exchanger to not occur...
08 August 2015 1,038 3 View
In practice, airside flow and refrigerant side maldistribution is very important issues. Although refrigerant flow maldistribution is able to be improved by using good produced distributor, air...
06 June 2015 2,372 12 View
I need to do uncertainty analysis for heat exchanger laboratory. I would be very grateful if you could share any documents regarding this calculation. Thanks.
04 April 2015 1,806 8 View
I have been dealing with PT100 calibration for a while and normally I have used this sensor at max 40 degree but 60 and 70 degrees are adjusted for calibration and these deviation is very high...
04 April 2015 5,835 7 View
I have completed uncertainty analysis for my heat exchanger calorimetric lab.but I am not sure the calculation of enthalpy ( it is required for Q=mr*deltaH) due to ref.prop program. Normally my...
04 April 2015 5,409 6 View
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...
04 April 2015 8,447 5 View
I have been dealing with air velocity measurement in order to obtain air distribution on air-cooled fin and tube condenser. In this respect, have been produced a traverse system which have 3 mm...
02 February 2015 5,137 6 View
I would be grateful if you could share any experiences and knowledge about using NIST Evap-Cond V.3.0 circuity design program. I didn't create non uniform airflow profile in program. Thank you in...
11 November 2014 905 1 View
Hi, I'm a master student and I am preparing thesis. I need your advice and opinions. Firstly, I want to learn how to be optimum circuit design according to air side non uniform flow.
11 November 2014 8,936 1 View
