wind and solar energy

More Dismas Choge's questions See All

Which nonlinear optical processes lead to multiple wavelength conversion in single period PPLN?

I have performed an experiment to frequency mix 974 nm LD laser and a C-band ASE laser source in a single period (10.2 um) MgO:PPLN. I however noticed five peaks at 487, 536, 598, 756, and 816 nm...

08 September 2018 9,806 8 View

How do I measure the splitting ratio of proton exchanged Y-junction waveguide?

I have a sample of Y-branch waveguides fabricated on lithium niobate substrate by annealed proton exchange (APE) process. I would like to measure the output power from each arm after coupling...

02 March 2017 8,270 6 View

Can someone help me plot the attached Fourier series using Matlab code?

I need a Matlab code to plot a rectangular wave function with a constant period and normalized amplitude. Please see the attached exponential Fourier series. Thank you in advance.

01 February 2017 9,934 4 View

How does magnetic field influence poling of lithium niobate/tantalate?

Periodic poling of lithium niobate/tantalate is often done using electric field applied across the crystal with patterned electrodes. How then is the poling process affected if it is performed in...

10 November 2016 4,439 0 View

How can i model negative corona discharge for a wire-to-plane geometry?

Dear all, I would like to study negative corona discharge for poling non linear optical crystals e.g Lithium Tantalate. I have however attempted to use plasma model example in COMSOL but i don't...

08 September 2016 5,318 3 View

How do I correct the error in the matlab code?

I have a simple matlab code for plotting a Y-junction but it can't run. Any one with matlab knowledge can please advice me on the attached code.

31 December 2015 1,207 10 View

How do I design a Y-junction using comsol multiphysics or matlab?

Y-branch waveguide structures are fundamental elements of integrated optics devices such as power or optical splitters, power or optical combiners, integrated-optic gyroscopes, Mach-Zehnder...

31 December 2015 8,080 5 View

Can anybody share modeling parameters in COMSOL Multiphysics for Mach-Zehnder interferometer or y-junction design?

COMSOL Multiphysics 5.2 (and above) has a solved Mach-zehnder interferometer in its model library for which part of its geometry is S-shape. I am using version 4.3b which doesn't have that...

31 December 2015 8,956 2 View

Which is the best simulation setup using VPI TransmissionMaker before field testing?

I am investigating the influence of different modulation formats on gain flatness of raman assisted fibre optical parametric amplifiers.

31 December 2014 7,284 2 View

How to develop investments in renewable energy sources?

08 August 2024 5,112 3 View

Is artifacts in XPS possible to build high deviation in binding energy larger than 5 eV??

Hello. Thanks for your consideration to see my question. Recently, I conducted XPS anaylsis of g-CN that is prepared from thermal polycondensation of DCDA, so-called conventional bulk-g-CN,...

30 July 2024 9,824 2 View

Is there a database with onshore wind production for the wind farms in Portugal?

I am looking to predict some production for future onshore wind energy production in Portugal, is there any database with info of performances of the existing wind farms in the country? something...

28 July 2024 1,750 1 View

HAs anyone used TGA to find activation enegy of water evaporation?

I have different polymer solutions and I hypothesize that water molecules are retained based on the water-polymer interactions, so the amount of free water is less to intercat with drug tablet....

28 July 2024 9,545 6 View

Can we eliminate the stress singularity at the tip of the crack by manipulating the elastic constants?

The aim of the research here is to prevent the propagation of the crack in the fabricated elastic medium with useful applications.

25 July 2024 9,976 3 View

Can anyone kindly suggest research topics in the area of thermodynamics, heat transfer, fluid mechanics or renewable energy?

I am an undergraduate mechanical engineering student seeking suggestions on topics related to either thermodynamics, fluid mechanics, heat transfer or renewable energy for my final year project....

24 July 2024 4,058 5 View

Is it feasible to employ an artificial sun in the experimental investigation of concentrated solar power systems, specifically linear Fresnel systems?

Is it feasible to employ an artificial sun in the experimental investigation of concentrated solar energy systems, specifically linear Fresnel systems? If the answer is affirmative, what type of...

22 July 2024 9,710 6 View

Why binding energy is in positive number after performing mmpbsa?

I performed mmpbsa of protein-protein complex simulation on gromacs. My binding free energy is +166781. This complex is stable when experimentally produced in wet lab. In index.ndx I grouped...

19 July 2024 4,120 5 View

Why electrical charge on the moving plate increase?

Hi, everyone This figure depicts a simulation of an electrostatic energy harvesting system in COMSOL Multiphysics software. My question is regarding the relationship between the changes in...

19 July 2024 4,694 4 View

How to extract binding energy from pv.maegz file without using Schrodinger?

I have conducted virtual screening using Schrödinger on a database of 17,000 molecules. Unfortunately, I cannot use the system with the Schrödinger license at the moment. I am trying to find a way...

18 July 2024 2,881 4 View

Muhammad Ali

Well it depends on a lot more things than just wind speeds measurements. Are you planning to choose wind turbines for a wind farm at a site ?

Dismas Choge

I am trying to choose the best wind turbine for the site which i have wind speed data.What else do i need to know?

Joern Lutat

Hi,

small check list:

- monthly data of wind speed a n d direction.

- plan of ground and height aroud the plant round about 1km.

- specific elect dat of the turbines (by manufacturers)

- height and direction of big buildings, trees.. around to calculate reudution of turbulent wind.

patience and or a software special for windturbine plants

Hamit Can

https://www.iea.org/publications/freepublications/publication/NextGenerationWindandSolarPower.pdf

http://library.uniteddiversity.coop/Energy/Wind/Wind_and_Solar_Power_Systems.pdf

http://www.ijsrp.org/research-paper-0315/ijsrp-p39109.pdf