Can cosine of solar zenith angle be negative?

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Do Fire damages Concrete Structures Below soil?

Hi All, I am working on the rehabilitation of a fire-damaged structure. Should I consider the Column below Soil structurally deficient. visually it doesn't look like fire affected the column...

12 January 2021 5,401 3 View

How to address the Irrigation and crop management practices database in SWAT model during simulations?

Dear Colleagues I am using the SWAT model in an irrigated basin where I wanna specify the Irrigation database for major crops (sugarcane, maize, rice, wheat, and cotton) in SWAT model...

03 January 2021 3,923 4 View

How can we draw the adsorption isotherms of Langmuir and Freundlich together with the experimental data in a single graph on Excel?

Thanks in advance

22 December 2020 7,853 4 View

How to make a model of trachea (human airway)?

I want to carry out flow analysis of air through tachea (human airway). How can I draw it in a Solidworks after taking a CT Scan image?

14 December 2020 5,031 2 View

How to prepare wheat grain sample for amino acid analysis through UV-HPLC ?

how to prepare wheat grain sample for amino acid analysis through UV-HPLC, and also amino acid standards for HPLC , I will be very very thank full.

10 December 2020 1,207 3 View

Interpretation of Probit in Propensity Score Matching (PSM)?

Is it necessary to interpret the results of Probit while using Propensity Score Matching (PSM) for impact evaluation?

30 November 2020 8,796 1 View

Exergy destruction mathematical calculation in kW?

somebody, please elaborate on how to calculate exergy destruction in kW units. from Aspen HYSYS I found mass exergy with kJ/kg unit and i don't know how to calculate it by using Aspen HYSYS and if...

25 November 2020 2,675 3 View

How to coat oleic acid on fe3o4 nanoparticles and yo confirm visually?

I made iron oxide nanoparticles via co-precipitation method and obtained a brown colour slurry with neutral pH and I did ex situ coating of oleic acid on nanoparticles and washed it with ethanol...

10 November 2020 5,911 4 View

How to get labels from synthetic dataset?

I have synthetic dataset, but I don't how to get labels from this dataset. Need helpful suggestions and advices. Thanks a lot in advance.

10 November 2020 5,167 3 View

How to confirm coating of oleic acid without using any XRD,SEM,FTIR???

I made iron oxide nanoparticles via co-precipitation method and obtained a brown colour slurry with neutral pH and I did ex situ coating of oleic acid on nanoparticles and washed it with ethanol...

28 October 2020 1,802 3 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

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

Gallium Antimonide (GaSb). Can anyone help me to find vendor (provider) to sell GaSb solar cell ?

I am searching of provider (GaSb), I only found this one (https://jxcrystals.com/wp/about/). Can anyone help me?

21 February 2021 1,945 2 View

Could the "incoming radiation (net radiation)" values be negative?

Could the "incoming solar radiation" values be negative? What is the difference between "global solar radiation" and "incoming solar radiation"? Which one might be measured negative values?

21 February 2021 7,726 9 View