solar system synopsis for mtech

7/28/2019 Solar System Synopsis for Mtech

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SAGAR INSTITUTE OF SCIENCE & TECHNOLOGY, BHOPAL

Department of Mechanical Engineering

CERTIFICATE

This is to certify that the work embodied in this preliminary entitled “CFD modelling &

its experimental analysis of heat and mass transfer in single slope solar still ”

has been satisfactorily completed by SANDEEP JAIN (0187ME11MT14); it is a

bonafide piece of work, carried out under our /my guidance in the Department of

Mechanical Engineeri ng, Sagar Institute of Science & Technology, Bhopal

for the partial fulfillment of the Master of Technology degree in Thermal

Engineering during the academic year 2012-2013.

Name of Guide: - Prof. SANJAY KUMAR SINGH

Approved By:

Dr. AJAY KUMAR KAVITY

(Head of Department of Mechanical Engineering)

Forwarded by

Dr. S. S. PATIL

Principal

Sagar Institute of Science & Technology, Gandhi Nagar Bhopal



Sagar Institute of Science & Technology, Bhopal


CERTIFICATE OF APPROVAL

This foregoing project report work is hereby approved its u creditable

study of an Engineering Subject earned out and presented in a manner

satisfactory to warranty its acceptance as a prerequisite to the degree for

which it has been submitted. It is understood that by this approval the

undersigned do not necessarily endorse or approve any statement made,

opinion expressed or conclusion drawn therein, but approve the thesis only

for the purpose for which it has been submitted.

(Internal Examiner) (External Examiner)



Sagar Institute of Science & Technology, Bhopal


DECLARATION

I, SANDEEP JAIN , a student of Master of Technology, Mechanical

Engineering, Sagar Institute of Science & Technology, Bhopal

hereby declare that the work presented in this synopsis is outcome of my own

work, is bonafide, correct to the best of my knowledge and this work has been carried out taking care of Engineering Ethics. The work presented does

not infringe any patented work and has not been submitted to any University

for die award of any degree or any professional diploma.

SANDEEP JAIN

0187ME11MT14

Date:



Abstract

The distillation is one of the important methods of getting clean water from

brackish and sea water using the free energy supply from the sun. An

experimental work is conducted on a single slope solar still. collect

experimental data of single slope solar still and its CFD modelling of heat and

mass transfer using FLUENT Software. In experimental data, first I collect data

of mw (mass of condense water) collected from distillation collect, different

temperature Ta, Tco, Tci, Tv, Tw, Pw (Partial saturated vapor pressure at watertemp), Pci (Partial saturated vapor pressure at condensing cover temperature)

Latent heat of vaporization of water (L), Thermal conductivity K v, Convective

heat transfer coefficient (hcw), Evaporative heat transfer coefficient (hew), Aw

(Area of the basin of solar, m2). Different type of model --- Dunkle's model,

kumar and Tiwari model for analysis purpose. MATLAB 7.1 will used for Graph.

After experimental analysis, with the help of CFD modelling --- Computation

method to make a model to validate experimental values.

Proposed work : Collect experimental data of single slope solar still and its

CFD modelling of heat and mass transfer using ANSYS FLUENT Software.



Introduction:

Solar distillation is one of the available methods to produce potable water. This

process has the advantage of zero fuel cost, but requires more space (for

collection).

The basic principles of solar water distillation are simple, yet effective, as

distillation replicates the way nature purifies water. The sun’s energy heats

water to the point of evaporation. As the water evaporates, water vapourrises, condensing on the glass surface for collection. This process removes

impurities such as salts and heavy metals, and destroys microbiological

organisms. The end result is water cleaner than the purest rainwater. The use

of solar energy is more economical than the use of fossil fuels in remote areas

having low population densities, low rainfall and abundant available solar

energy.

The productivity of fresh water by solar distillation depends drastically on the

intensity of solar radiation, the sunshine hours and the type of the still.

Single Slope Solar Stills:

Single slope solar stills can be used for water desalination. Probably, they are

considered one of the cheapest solutions for fresh water production. However,

the amount of distilled water produced per unit area is somewhat low which

makes the single-basin solar still unacceptable in some instances. To capture

and condense evaporated fresh water, a cold surface (glass cover) is needed.

Due to the slope in the glass for solar still, the condensate vapour will flow

through the distillation channel then collected in the distillation vessel.



Computational Flow Dynamics (CFD) :

Computational Fluid Dynamics modelling is an established branch of

fluid mechanics that uses numerical methods and algorithms to solve

and analyze problems that involve fluid flows.

CFD basically computation method to make a model to validate

experimental values.

ANSYS Fluent software will be used for CFD modelling work.



A simple solar still design



Box Structure of Solar Still



ew ew wq h A T mL



Temperature dependent physical properties of vapour

Quantity Expression

Specific heat, Cp 999.2 + 0.124xTi+1.101x10-4

xTi2-6.7581x10

-8xTi

3

Density, r 3.53.44/(Ti+273.15)

Thermal Conductivity, Kv 0.0244+0.7673x10-4

xTi

Viscosity, m 1.718x10-5+4.620x10-8xTi

Latent heat of vaporization of water,

L

3.1615x106x[1-(7.616x10

-4xTi)] for Ti>70

0C

2.4935x106x[1-(9.4779x10

-4Ti+1.3132x10

-7-4.7974x10

-9xTi

3)]

For Ti<700C

Partial saturated vapour pressure at

condensing cover temperature, Pci

exp[25.317 - 5144/(Tci+273)]

Partial saturated vapour pressure at

water temperature, Pw

exp[25.317 - 5144/(Tw+273)]

Expansion factor, b 1/(Ti+273.15)

Proposed work --- Collect experimental data of single slope solar still and its

CFD modelling of heat and mass transfer using ANSYS FLUENT Software .....

solar system synopsis for mtech

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