Performance and cost analysis of N- Evacuated Tubular Collector (N-ETC) integrated double slope solar still using CQD-water based nanofluids

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Mentor : Dr. Harendra Pal Singh , Prof. Swati Arora

What are Carbon Quantum Dots?

Carbon Quantum Dots are quasi spherical, nontoxic (or less toxic), water-soluble, highly fluorescent nanomaterial that falls in the size range of 2–8 nm. They consist of clusters of carbon with various other atoms such as nitrogen, oxygen, sulphur, and phosphorus

What is an evacuated tubular collector (ETC)?

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The simplest modules are made of two connected tubes assembled as shown . The inner side of the inner tube is coated to form a selective surface, which is vacuum-encased (<105 of atmospheric pressure). The fluid extracts heat and passes in and out at the same end of the inner tube. The solar radiation, which passes through the spacing between the tubes, is reflected by the reflectors onto the back of the tubes.

EVACUATED TUBULAR COLLECTOR (ETC)

{Cross Sectional View}

DOUBLE SLOPE SOLAR STILL CONNECTED TO SYSTEM OF EVACUATED TUBULAR COLLECTOR

Equations formed for the Temperature inside the Solar Solar Still

Equation for the water temperature obtained from the ETC connected to the Solar Still

The Final Differential Equation formed from the previously shown equations

The Dependence of Thermo-Physical Properties of water on Temperature of water

The Dependence of Thermo-Physical Properties of Nano-fluid on Temperature of water

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Here nanofluid is the mixture of water and the Carbon Quantum Dots

The relations between Thermo-Physical properties of Water and Nano-fluid to the Heat Transfer Coefficients (HTC) in the Solar still

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COMPILATION OF ABOVE EQUATIONS IN MATLAB

AND OUTPUT ANALYSIS THROUGH GRAPHS

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Input Intensity, Solar Radiation and Ambient Temperature

Comparative Variation of Temperature of basin fluid with Time

Variation of TPP of Water with time

Comparison between TPP of water and nanofluid

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Future Work

Due to the ongoing pandemic situation, we were forced to stick to old experimental data, which will definitely have variations on the outcome of our Solar PVT system. So, when the situation gets normal, our first priority will be to get the fresh data and do more of hands-on work. We shall also do a cost analysis of the new PVT system and perform the error analysis between our computed data and the actual data that we get

THANK YOU�

Joint Effort by:�Ishan Bansal�Nikunj Saini�Akhil Sharma