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CIVIL ENGINEERING
CSE
This is a final year game project for all the students out thereFull description
Dr. B. R. Ambedkar National Institute of Technology, Jalandhar Mechanical Engineering
Final Year Project - Solar Trough Collector Submitted By: Kshitij 12102035 Prateek 12109058
A parabolic trough collector is a type of solar thermal collector that is straight in one dimension and curved as a parabola in the other two, which is lined with a polished aluminium sheet.
The energy of sunlight which enters parallel to its plane of symmetry is focused along the focal line, where water is intended to be heated.
OBJECTIVE
Increase the use of renewable sources of energy in order to decrease the greenhouse effect and hence saving the environment.
Conversion of sunlight into renewable energy for water heating using a solar trough collector.
Hot water is used in cooking, pressurization, sterilization, bleaching, Industrial distillation, concentrating, and drying or kilning
WORK DONE SO FAR
Materials : Al reflector sheet on wooden base, Cu tube, hoses, wooden stand, thermometers.
Dimensions: projected area 1sqm. Theoretical calculations and feasibility of the project
CAD model
Solar energy radiation data
EXPERIMENTAL SET UP
LAYOUT Reservoir
1 trough Reservoir 2 Solar
Copper
Tube Thermometers
Flow control valve at low and high temperature side.
WORKING
Water is stored in the reservoir 1.
As the cold side valve is opened, tube gets filled with water.
Incoming solar flux is focused on the tube after reflecting from reflector. In this way solar energy raises the water temperature.
After the calculated time, hot side valve will be opened which will be collected in reservoir 2.
Now the cold side valve will be again opened which will allow the fresh cold water to be inserted.
In this way, continuous hot water will be produced.
Theoretical Calculations Radiation Data: Solar intensity for the month of April in Jalandhar = 6.6kWh/sq.m/day or 270W/sq.m Assumptions:
Constant heat flux throughout the projected area.
Tube thickness is very small as compared to its length.
All radiations after reflecting from the reflector are focused at the tube.
Inlet distilled water at a temperature of 25 deg C.
Calculations: Trough dimensions, L = 1.5m, w = 0.67m
Diameter of tube, d = .01m Reflectivity of the Al sheet = 0.85 Absorptivity of Cu tube = 0.95
Specific heat of water, c = 4.186 kJ/kg/K Outlet Temperature = 85 deg C. Applying conservation of energy : mcΔT = I*ε*α*t (Πd2l/4 *ρ)*c*
T = I*ε*α*t
Solving the Equation, we get t = 135.7s So we need to hold the water for about 136s ec in the tube to maintain the desired outlet temperature. Hence in an hour, about 3 litres of water can be heated.
BUDGETARY PLAN
Aluminium Foil
Copper tube
Reservoirs
Hoses Valves
Thermometers
Wooden base
Other assembly parts
WORK NEEDED TO BE DONE
Buying the material
Preparing the wooden structure
Pipe fitting
Completing the assembly Comparing the theoretical and actual results
