Ramendra Pandey

9 Questions 12 Answers 0 Followers

Questions related from Ramendra Pandey

Which is the best flocculant I can use for sludge containing iron?

I have tried anionic polymeric flocculant which works well but is extremely costly. I am exploring other cost-effective options. Thanks!

05 May 2019 5,913 3 View

Does the heat transfer coefficient increase during coupled mass transfer? Is there any correlation which accounts for such a correction?

Standard Hausen's correlation for Nusselt number predicts heat transfer coefficient which are found to be lower than those measured experimentally in a pervaporation process. What could be the...

06 June 2018 1,438 3 View

Can liquid water saturation occur in a pore at RH<100 %? Does the pore need to be hydrophilic for liquid saturation?

I am asking this question in context with a two phase flow in porous media. Thanks!

03 March 2018 2,979 1 View

Can there be an order of magnitude or higher difference between in-plane and through-plane thermal conductivity of a porous polymeric matrix?

Would orientation of crystalline part of polymer lead to such huge difference in through-plane and in-plane thermal conductivity?

09 September 2017 1,865 6 View

What is the effect of temperature on water content of Nafion at 100 % RH?

Is there any study on Nafion which reports experimental study wherein temperature was varied at constant RH and the water content in the membrane was recorded.

06 June 2017 1,080 2 View

How is effective diffusivity in membranes related with the density ratio of membrane and the diffusing species?

What is the physical significance of introducing density ratio in estimation of effective diffusivity in membranes?

06 June 2016 4,892 2 View

Are the heat and mass transfer coefficients co-dependent on each other in a combined heat and mass transfer phenomenon such as humidification?

In a typical shell and tube membrane humidifier module, heat and moisture are exchanged between the wet and dry fluids flowing on either side of the membrane. Now, is there a correlation that...

12 December 2015 8,435 8 View

What is the minimum temperature attainable through passive cooling in an 'enclosed space'? Wet bulb temperature or dew point?

Say for example, A Zeer Pot system undergoes cooling due to evaporation of water. Now what would be the minimum temperature at the center of the Pot considering the top and bottom are perfectly...

04 April 2015 2,891 3 View

What theoretical or experimental techniques can be used to determine the different kinds of overpotentials in PEM fuel cells?

I have already carried out polarization studies and electrochemical impedance measurements but the trends obtained from both techniques do not match. Could there be another method which could give...

02 February 2015 491 3 View