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Questions related from Ergin Bayrak
We have been numerically investigating the thermal-fluid characteristic of sCO2 laminar flowing in a 0.5 mm diameter circular microtube in upward direction. Depending on sharp density change along...
30 June 2020 5,355 2 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...
23 July 2018 3,481 3 View
Nowadays, I have been working on frosting, defrosting and refrosting occuring at unit coolers. I need a sensetive scale to put under to test unit, so it must be like a rectangular platform. As my...
28 April 2016 4,623 2 View
Nowadays, I have investigating the frost growth at unit cooler evaporator, considering real fan effects. I have encountered that as the pressure drop increases almost linearly up to a top point of...
19 March 2016 1,172 3 View
I have been researching the air flow effects on frost formation at fin and tube heat exchanger and I need uniform flow media in front of heat exchanger. However, I haven't ensured at my tunnel...
20 December 2015 4,549 8 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...
24 November 2015 6,806 1 View
Nowadays, I carry out frosting investigation on fin and tube evaporator. I want to learn my evaporator outlet relative humidity and temperature at outlet of fan. Normally, air side thermal...
28 October 2015 4,228 1 View
Dear colleagues, I have a sealing problem regarding safety valves placed C02 experimental setup. Safety valve's gaskets have been distrupting permanently because this system doesn't run every time...
29 September 2015 3,511 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...
24 August 2015 2,566 3 View
Nowadays, I have been trouble to control test condition of fin-tube heat exchanger. I think that this is based on cleaninig problem of shell and tube heat exchanger placed on auxiliary system and...
30 June 2015 7,251 9 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...
28 April 2015 8,313 8 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...
15 April 2015 9,657 5 View
I learned that this phenomenon is related to surface tension. I don't know if this flow characteristic contributes to the overall improvement of the heat transfer rate at an evaporator. Thank you!
19 March 2015 3,256 4 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...
14 November 2014 5,148 0 View
