PBL teaching or lecture based teaching? which one better match with new life?

The classical teaching methods proven successful in forming the shape of the world we are living now. But, some believe the new changes in the world needs the new methods of teaching, i.e. PBL...

04 May 2017 7,782 1 View

Does bio-gas consider as renewable energy source? what about CO2 generation of bio-gas?

Bio-gas is considered as an environmental friendly and renewable energy. In the process, methane gas CH4 is produced and burnt in a Gas Turbine. How come it is considered as environmentally friendly?

04 May 2017 3,371 3 View

Can you give examples of Wind Turbine to Heat generation (than electricity generation)?

What are examples of high efficiency conversion of wind to heat? particularly if there are some commercial ones.

04 May 2017 6,841 7 View

Can you give examples of color in Drag reduction?

04 May 2017 3,786 1 View

Dark Art or Light Art? Why we absorb to Dark Art?

There should be a boundary between dark art and right art. Why human attracted to the dark side? horror, criminal, etc.? Is it correct this comment at all or is there evidence studies to show this...

04 May 2017 7,368 0 View

What changes in pipe flows heat transfer can be achieved by nano coatings?

Nano layers have proved different radiation characteristics. So, what would be the effects of nano - layers as coating in inner or outter side of pipe flows on genral heat transfer...

11 December 2014 6,116 4 View

Is there any research to extend the cut-out speeds for wind turbines?

There are plenty of project to increase the size of wind turbines. There has been limitations to not exceed the cut-out wind speed for wind turbines. I wonder if there are research to push this...

11 December 2014 1,845 5 View

Irradiation data for JAPAN?

Hi, Could you help me to get the latest (2019, 2020) solar resource data for a particular site in JAPAN? PV GIS and NSRDB data are not in reach to JAPAN, I'm looking for some other database for...

03 March 2021 961 3 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

Help request in CST microwave?

im working now on TPV solar cells and metamaterials and i realy need our help in CST microwave i have a tpv cell simulation and i want to extract particullarly the absorbtion of only the active...

02 March 2021 2,246 2 View

Anyone found any research papers on solar furnace design calculations (for solar concentration)?

I am thinking about working on solar furnace with heliostats that concentrate sunlight and heat molten salt, but currently no luck with research. Not a lot of papers based on the subject. (check...

01 March 2021 5,023 5 View

How to size battery banks?

I am designing a small grid connected solar PV power-plant. As the battery's capacity is specified in Ah and demand in kWh. What is the best way to size the battery bank? I have battery price in...

28 February 2021 1,638 3 View

How to design a boost converter for a mppt controller?

I have a doubt on how to select the inductor and capacitor value when I want to implement MPPT controller. This is because we always take a maximum output voltage and current but in this case, we...

28 February 2021 3,637 2 View

How to sample data to increase presence of solar panels in the images?

I am working on creating deep neural network on geospatial dataset and wanted to know how to do the sampling so that I can increase the presence of solar panels in the images. I cannot use entire...

25 February 2021 3,936 6 View

Have anyone checked before Cyclic voltammograms of intial ITO substrate and E-teck?

As a beginner in electrochemistry, I tried to obtain cyclic voltamograms of commercial anatase powder deposited on an ITO substrate or on Eteck. After several attempts, I noticed that my cyclic...

23 February 2021 3,175 3 View

Fictitious Boundary Meshing Method (FBM) in Commercial FEA software?

Is it possible to implement FBM in a commercial FEA software package, such as FEMLAB, COMSOL, or open source software like Moose?

22 February 2021 2,968 1 View

Suppose we have a banana seller cart consisting of 4 wheels, weighing about 300 kg. How much torque motors are needed to pull of push it electrically?

I am thinking of electrifying the street food carts while harvesting energy using solar panels on top.

22 February 2021 4,323 3 View