BY MR.VINAY P. SHENDE M.Tech. (EMS) 4th Semester Under the Guidance of Prof. R.E. THOMBRE Deptt. Of Mechanical Engineering R.C.E.R.T. Chandrapur. A FIRST PRESENTATION ON PERFORMANCE EVALUATION OF FUNNEL TYPE SOLAR COOKER RASHTRASANT TUKADOJI MAHARAJ NAGPUR UNIVERSITY NAGPUR – 2010-11
Fire wood is used in almost all rural area around the world. This leads to consequence such as 1. Loss of forest area 2. Loss of fertile soil caused by erosion 3. Desertification 4. Increase of poverty and conflict 5. Smoke exposure.
Solar cookers are an important contribution towards halting the deforestation process and preserve the environment. 1) It helps in fighting poverty. 2) There is no CO 2 emission which is the main agent responsible for climate change. 3) The population becomes less dependent on charcoal. 4) Families spend lot of less money. 5) There is pay back on the investment after only few month of using Solar Cooker. 6) Cooking with Solar Cooker is hygienic.
A.V. Narasimha Rao, S.Subramanyam
 has discussed the role of vessel inside the
Based on result, conclusion are ;
1) Putting the vessel on lugs make the bottom of vessel to improve the heat transfer.
2) Reduction in cooking time is possible.
3) Improve cooker performance without involving much extra cost.
Tarig A. Al-Azab, M.Q. Al-odat, F.M Al-Hussien
has performed the experimental investigation of box type solar cooker with finned pot and unfinned pot.
The experimental result show that ;
1) Cooker temperature can be increased by
using finned cooking pot.
2) Cooker efficiency can reach 45% for finned cooking pot and 40% for Unfinned pot.
has performed the experimental determination of energy efficiency of Conical Solar Cooker.
The experimental result show that ;
1) Sensible efficiency is about 20%
2) The maximum temperature obtained in the pot containing 2 lit of water is 92 0 C.
V.V.S. Murty & Preeti Kanthed
has study the thermal performance of a Solar Cooker having
phase change material as transparent insulation.
The experimental study shows that ;
1) PCM is observed to posses a good transmittance and insulation property and hence they are useful during charging and discharging process.
2) During charging process, as the PCM material melts, it allow’s the solar radiation into the cooker.
3) During discharging as it solidifies, the thickness of insulating medium increases with time and the rate of heat loss from the system also decreases and hence the heat energy retains for a longer time inside the PCM Solar Cooker.
R. Gayapershad, S.T. Dladla and M.J. Brooks
has conduct performance evaluation test on
sunstove unit and Ishisa box unit with tracked &
Result show that ;
Sunstove unit reached the maximum temperature of 57 0 C and 55 0 C for tracked and untracked condition respectively.
Ishisa box unit reached maximum temp. of 72 0 C and 61 0 C for tracked and untracked condition respectively.
3) Tracking improve performance resulting in highest final temp. and cooking power.
PROCEDURE OF FABRICATION
Outer box of cooker fabricated by plywood.
Inner box constructed from aluminum sheet.
PUTTING BOXES TOGETHER AND INSULATION
REFLECTORS & FINAL SETUP
GLUING ALUMINUM FOIL TO REFLECTOR.
PUTTING COOKING VESSEL INSIDE THE COOKER.
COVERING TOP OF COOKER WITH TRANSPARENT TEFLON SHEET.
FRABRICATION OF COOKER
Materials Required For Fabrication
18” x 7” with four pieces.
18” x 18” of one piece.
24 gauge aluminum sheet of size 16”x 16” x 6”.
Thermocol for insulation.
Cooking vessel of dia. 12.5cm & 13.5cm height.
Six nos. of Thermocouple.
CALIBRATION OF THERMOCOUPLES.
PUTTING THERMOCOUPLES AT DIFFERENT PLACES .
- T1 Ambient Temp.
- T2 Plastic sheet temp.
- T3 Absorber plate temp.
- T4 Vessel temp.
- T5 Vessel content temp.
- T6 Reflector temp.
PERFORMANCE TESTING PARAMETER
1) Climatic Parameter
Wind speed, et c
2) Design parameters
Properties of black paint used.
Reflectors at different angles.
Number of glazing
Effectiveness of reflector – Booster system .
3) Operational parameter
- Amount and type of food kept for cooking
- Numbers of cooking vessel used
The testing of cookers by three test.
Water heating test
COOKING POWER AND EFFICIENCY CALCULATION
The sensible cooking power is expressed as.
M w .C w .dT w +M v .C v .dT v
Q h = ------------------------------------
Q h = Sensible cooking power
M w = mass of water in kg
M v = mass of vessel in kg
C w = specific heat capacity of water in J/kg K
C v = Specific heat capacity of vessel in J/ kg K
dT w = Temperature change of water in K
dT v = Temperature change of vessel in K
dt = Duration of measurement in second .
The average sensible efficiency of cooker is determined as the sensible energy used in heating divided by the incident solar flux on the aperture area of the cooker.
h = ------------------------------------
A q . I H (average)
h = Cooker efficiency.
A a = Aperture area.
I H (average) = Average solar insulation during Period .
The proposed work deals with the ;
Testing of performance evaluation of funnel type Solar Cooker with different reflector angles.
2) Comparative study of the performance of proposed work with existing system.
3) Cooking time for different food product will be compared
4) Time required to heat a known amount of water will be compared.
1) A.V. Narasimha Rao a,*,1, S. Subramanyam “Solar cookers––part I: cooking vessel on lugs” Solar Energy 75 (2003) 181–185, 2) Tariq A. Al-Azaba, M. Q. Al-Odatb* and F. M. Al-Hussi, “Experimental Investigation of a Box-Type Solar Cooker with Finned Pot Thermal Performance in Jordan” GCREEDER 2009, Amman Jordan, March 31st April 2nd 2009 , 3) C. Lertsatitthanakorn “Experimental determination of energy efficiency of conical solar cooker. 4) R. Gayapershad, S.T. Dladla and M.J. Brooks “Preliminary Result from performance evaluation study of commercial solar cooker”. 5) H. Hüseyin , “Evaluation of efficiency for solar cooker using energy and exergy analyses.” 6) V.V.S. Murty & Preeti Kanthed, “Thermal performance of a solar cooker having phase change material as transparent insulation.” 7) Subhash Y. Kamdi, R.E. Thombre, Subroto Dutt, “Energy Evaluation of Paraboloid Dish Collector - A Knowledge Based Approach”, All India Seminar with International Participation on Non Conventional Energy Sources and Urban Rural Economy in Developing Countries, Co-Gen, 2008, 9-10 Feb. 2008, Nagpur India. 8) Subhash Y. Kamdi, R.E. Thombre, Subroto Dutt, “A Mathematical Approach for Paraboloid Dish Collector Designing.” 9) C Z M Kimambo, Department of Energy, University of Dar es Salaam, “Development and performance testing of solar cookers”, Journal of Energy in South Africa Vol.18 No.3, August- 2007 10) Kathy Dahl-Bredine6, “Windshield shade solar funnel cooker” April 2006. 11) Herliyami Suharta, Dieter Seifert, AAM Sayigh, “Clean Development Mechanism (CDM) Solar Cooker Project ACEH1, Indonesia.” 12) Heinz Vetter “Solar Cooker Project of ADES.” 13) H. P. Garg and J. Prakash , Solar Energy, p-166-17, Tata McGro-Hill. REFERENCES