DOCSLIB.ORG

Evaluation of Thermal Performance of Paraboloid Concentrator Solar Cooker

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Evaluation of Thermal Performance of Paraboloid Concentrator Solar Cooker ISSN:2321-1156 International Journal of Innovative Research in Technology & Science(IJIRTS) Evaluation of Thermal Performance of Paraboloid Concentrator Solar Cooker Gavisiddesha 1, Dr P P Revankar 2, M B Gorawar 3 ing the nutritional value of the food. PSC are low cost op- Abstract tions for meeting the cooking energy needs as well as envi- ronmental protection. The PSC is an emerging device which Cooking is the prime requirement of people all over the has a great potential in India. However, PSC technology will world. Solar Energy is contributing major energy require- have to compete with prevalent cooking devices in the coun- ments of the world population. Paraboloid Concentrator is try. Even though over 5, 00,000 SBCs have been sold so far, used to utilize the solar energy for heating purposes. The the large potential of solar cookers is yet untapped [3]. The Experimental investigations were carried out to determine parabolic solar cooker rests on the principle of the concen- performance of solar paraboloid cooker during summer sea- tration of the rays. It is well known that the parallel beam of son in Hubli (15° 20' N, 75° 12' E). A paraboloid collector ray of the sun is reflected on the parabolic mirror and the having aperture diameter 1.4m, depth 0.4m, focal length rays converge in the same point, the hearth of the parabola. 0.30m was fabricated. First the paraboloid solar cooker was While running up against a dark container placed in this tested under no load condition, and then cooker filled with point, the rays are released their energy in the form of heat. different volume of water viz. half, one and two liters along Determination of the exact receiver size and the arrangement with the suitable quantity of rice. The solar radiation and to provide insulation at the receiver are of prime importance temperatures of reflector, pot, ambient were recorded. Per- to avoid thermal losses. One or more transparent covers are formance parameters of paraboloid concentrator cooker as employed to reduce the convective and radiative heat losses Suggested by ASAE namely Optical efficiency factor (F‘η0) from the absorber to the environment. Heat losses from a and Heat loss factor (F‘UL) were obtained. The cooking paraboloidal concentrator solar cooker depend on the pot power, standard cooking powers are also calculated. Pres- water temperature, the surface area of the cooking pot, the sure cooker of 3 liters is used for the experiment. The solar wind speed, and the orientation of the reflectors. The heat cooker was found to be useful in cooking a variety of foods. losses are classified as Optical losses and thermal losses. Optical losses are those which occur in the path of the inci- Keywords— Solar Cooker, Heat loss factor, Optical effi- dent solar radiation before it is absorbed at the surface of the ciency factor absorber, while thermal losses are due to convection and reradiation from the absorber [4]. The thermal and optical Introduction performance of the paraboloidal concentrator was evaluated by carrying out thermal tests by heating and cooling a Solar energy is one of the most promising renewable known amount of water. energy resources which is available in most of the develop- ing countries including India. Cooking in a rural area mainly The Solar paraboloid cooker depends upon conventional energy sources such as cow dung, straw, wood, coal and hence, solar cooking can play The first solar parabolic cooker was developed by Ghai. an important role in rural areas in cooking. Solar cookers are The solar paraboloid cooker (SPC) is a preliminary construc- the most promising devices since firewood used for coking tion for the experiment. The pot is painted black with dull causes deforestation while commercial fuels such as LPG black paint and water temperature is measured using Cop- and electricity are not available besides cooking accounts for per-constantan thermocouples. These thermocouples having a major share of energy consumption in developing coun- low cost, acceptable accuracy and rapid response tries. As the authors know 70% population of India lives in The coordinates of parabola were obtained by the software rural areas and there are about 300 sunny days a year in In- called PARABOLA CALCULATOR which is easily availa- dia [2]. Solar thermal is being developed and disseminated ble on the internet. The initial specification for the design of in many countries around the world. The Ministry of New Paraboloid Solar Collector is obtained by considering para- and Renewable Energy (MNRE), Govt. of India has been bolic equation pursuing a comprehensive program in the country on the X2=4fY (1) development and dissemination of renewable energy tech- Where Y is Distance along vertical axis, f is the Focal nologies. Solar cooking saves not only fossil fuels but also length; X is Distance along horizontal axis. keeps the environment free from pollution without hamper- 58 INTERNATIONAL JOURNAL OF INNOVATIVE RESEARCH IN TECHNOLOGY & SCIENCE | VOLUME 1, NUMBER 3 ISSN:2321-1156 International Journal of Innovative Research in Technology & Science(IJIRTS) Description Specification Parabolic Solar Cooker Aperture Diameter, Da (m) 1.4 2 Aperture area, Aap (m ) 1.54 Reflector material Aluminum film (anodized) Number of reflector sheets 24 Focal length (m) 0.30 Concentration ratio 49 Receiver diameter (m) 0.219 Receiver area (m2) 0.037 Capacity (Watts) 600 Cooking Vessel Aluminum (darkened sur- Material face) Shape Cylindrical Capacity (Liters) 3 Figure 1. Parabola dimensions from Parabola Calculator 2.0 Inner diameter 0.236 software Outer diameter (m) 0.240 We get a parabolic shape at different values of x and y. The Thickness (m) 0.003 initial design of the prototype paraboloid solar collector by Depth (m) 0.25 the use software is shown below and the values of different Mass (kg) 1.2 parameters obtained are shown in Table 1 Table 1. Co-ordinates of designed paraboloidal concentrator from parabola calculator Modeling We used these equations X(cm) -70 -64.1 -58.3 -52.2 -46.6 -40.8 -35 Y(cm) 40 33.1 27.7 22.5 17.7 13.6 10 The focal length of Parabola h 2 X(cm) -29.1 -23.3 -17.5 -11.6 -5.83 0 - f (2) Y(cm) 6.9 4.4 2.5 1.1 0.2 0 - 4 R X(cm) 5.8 11.6 17.5 23.3 29.1 35 40.8 The parabola surface Area Y(cm) 0.28 1.11 2.5 4.44 6.9 10 13.6 3 X(cm) 46.6 52.5 58.3 64.1 70 5.8 - 2 2 2 8 f d (3) Y(cm) 17.7 22.5 27.7 33.6 40.00 0.28 - As 1 1 3 4 f The parabola was also designed in Catia software as shown in figure (2). The cooker is designed as per dimensions men- tioned in Table 2 The Concentration Ratio Aap CR (4) Aab Cooking power Mw Cw dTw P (5) dt Standard cooking power 700 MwCpw T Ps (6) t I b Figure 2. CAD model of Solar Paraboloid Cooker Table 2. Main Specifications of the Paraboloid Solar Cooker and Cooking Vessel Thermal efficiency 59 EVALUATION OF THERMAL PERFORMANCE OF PARABOLOID CONCENTRATOR SOLAR COOKER ISSN:2321-1156 International Journal of Innovative Research in Technology & Science(IJIRTS) A (T T ) U p w a (7) Performance Evaluation of Parabolo- t 0 L A I a b id Cooker Heat loss factor The performance of paraboloid cooker was evaluated by M C M C POT POT W W (8) carrying out the tests suggested by Mullick Traditional me- F'U L APOT 0 thods of characterizing the performance of solar cooker are based on energy analysis[21] based on first law of thermo- Optical Efficiency Factor dynamics and it provides information about quantity of F'UL A T T energy without investigating quality of energy. Exergy anal- pot wf a Twi Ta 0 e ysis is based on second law of thermodynamics which not Ap I b I b (9) F'0 only considers the irreversibility in the system but also it is 1 e 0 directly related to quality of available energy. Exergy is de- fined as the maximum work which can be produced by sys- tem. Experimental Setup No –Load testing Set up consists of 1.4 m diameter Concentrator and black coated absorber in the form of cooker as shown in figure 3.. To evaluate the thermal performance of the solar cooker, a The value of the diameter is selected such that heat input no-load test was conducted. The pot without load was kept at available at focal area in the range of 600 watts [2]. The foc- the focus. The temperature at various points of the pot was al area is a white bright spot measured and found to be al- measured by thermocouples attached at different locations most 0.2.m diameter and hence pressure cooker of 0.2m di- on the inner surface of the pot. Four thermocouples each ameter, 0.25m is selected. An anodized aluminum reflector were fixed at the pot bottom center, bottom side, side wall, with reflectivity of 82% is fitted over to get the shape of and cover. The paraboloid was adjusted, and the bright spot parabola. was positioned at one edge of the bottom of the pot. The The paraboloid cooker should be placed facing east direction concentrator was lifted in this position until the ―bright spot‖ in the morning and the reflector should be tilted according to moved across the bottom of the pot, almost to the diametri- Sun angles.
Load more

Recommended publications
  • Direct Solar Energy Is Used for Mcq
    Direct Solar Energy Is Used For Mcq Fulgurating and depreciative Allin remodels her Amatis arrondissement remonetize and dissimilating comfortingly. Windham is mythic and enrobes grumly while saucer-eyed Anders restating and pop-up. Garth often mines demiurgically when sandy Giraud luteinize coolly and tub her Aix-la-Chapelle. Photovoltaic power requirement is used is no mechanical components must be stored energy of the person or exceed the isotherms are no more running the sun in a valid image Check police report after participants start answering questions. What teachers are saying! First takes you have all about solar panels for solar energy. The atmosphere towards the tilt angle, the same time of charge batteries are vaporised and steam power backup power produced electricity? For rechargeable systems, application of a voltage induces the reserve reactions and regenerates the electrode materials. Click on house title of a bridge below. Use the window load permit to keep proper page load performant window. Your email address is not verified. Please enter drug name. While important, transmission is found one element of the nationwide grid modernization effort needed to thump the potential benefits of renewable energy. How would slowly decrease in energy consumption affect your lifestyle? Energy is consumed and divorce be used again. By diversifying the energy supply mix, a system can continue or buffer the ratepayer from the potential financial risks and volatility of changing fuel prices, changing environmental requirements, and common design flaws that can result in large operational and maintenance costs. The northern lights occur near their north fork of earth. Black surface absorbs more lost as compared to spy or reflecting surface under identical conditions.
    [Show full text]
  • Renewable Energies
    RENEWABLE ENERGIES Educational and information materials Note: This material was originally published in German and was designed for lessons for 12-16 year old pupils in Germany. It may therefore be necessary in some cases to adapt the worksheets to the situation in the countries where the material is to be used. To this end, the material is available for download free-of-charge on the Federal Environment Ministry’s website at www.bmu.de/bildungsservice. IMPRINT Published by: Federal Ministry for the Environment, Nature Conservation and Nuclear Safety (BMU) Public Relations Division · 11055 Berlin · Germany E-mail: [email protected] · Website: www.bmu.de/english Text: Peter Wiedemann, Sabine Preußer, Annette Jensen Editors: Dr. Korinna Schack, Achim Schreier, Referat ZG II 1 (BMU) Frank J. Richter, Zeitbild Verlag und Agentur für Kommunikation GmbH Academic Advisers: Prof. Dr. Gerhard de Haan, Free University of Berlin, Department of Educational Science and Psychology, Educational Future Science Section Dr.-Ing. Joachim Nitsch, German Aerospace Center (DLR), Institute of Technical Thermodynamics Georg Eckert Institute for International Textbook Research Design: Zeitbild Verlag und Agentur für Kommunikation GmbH, Berlin Printing: Bonifatius GmbH, Paderborn Illustrations: Zeitbild / Oedekoven, Zitromat Date: June 2008 First Print: 2.000 copies RENEWABLE ENERGIES EDUCATION AND INFORMATION MATERIALS Contents JOURNEY INTO THE FUTURE 3 THE RENEWABLE ENERGY 71 FOUR TEENAGERS DISCOVER THE ENERGY SUPERSTARS SUPPLY SCENARIO OF THE FUTURE WHO HAS
    [Show full text]
  • 3Rd International Conference on Solar Technologies & Hybrid Mini Grids To
    SIDE EVENT: Innovation Lab – Energy Access in A Crucible September 23, 2020, 09:00 - 12:30 hrs Hosted by Affordable Energy for Humanity (AE4H), Prof. Jatin Nathwani, WISE, Canada The goal of the ‘Innovation Lab’ is to develop and stress test a specific set of solutions for rapid implementation in the context of energy access in a disadvantaged community. We will rely on the divers, but, deep expertise that each participant brings to the lab. It is a dynamic learning platform that relies on a multi-disciplinary approach to provision of energy services for the very poor. We will draw on the strengths from the following: technical and data analytical expertise, economics and business models supporting micro-enterprises, insights that inform social value of energy; its generative impacts and service value maps that address cultural preferences, needs of the young and the old and gender inequities 3rd International Conference on Solar Technologies & Hybrid Mini Grids to improve energy access Palma de Mallorca, Spain September 23 - 25, 2020 www.energy-access-conferences.com Wednesday, September 23, 2020 REGISTRATION OPEN 13:15 OPENING SESSION Opening Address 14:00 14:00 – Xavier Vallvé, Trama TecnoAmbiental (Spain) 14:35 14:05 – Dr. Andreu Moià, Universitat de les Illes Balears (Spain) 14:15 – Bärbel Höhn, Special Representative for Energy in Africa of the German Federal Ministry for Economic Cooperation and Development (BMZ) (Germany) SESSION 1: Progress and Challenges in Achieving SDG 7 Chairs: Dr. Carsten Hellpap, GIZ, Germany Xavier Vallvé,
    [Show full text]
  • A Stand-Alone Parabolic Dish Solar Cooker for African Conditions
    A Stand-alone Parabolic Dish Solar Cooker for African Conditions by Omotoyosi Onalapo Craig Thesis presented in fulfilment of the requirements for the degree of Master of Engineering (Mechanical) in the Faculty of Engineering at Stellenbosch University Supervisor: Robert Thomas Dobson December 2015 Stellenbosch University https://scholar.sun.ac.za Declaration By submitting this thesis electronically, I declare that the entirety of the work contained therein is my own, original work, that I am the sole author thereof (save to the extent explicitly otherwise stated), that reproduction and publication thereof by Stellenbosch University will not infringe any third party rights and that I have not previously in its entirety or in part submitted it for obtaining any qualification. Date: 23 November 2015 Copyright © 2015 Stellenbosch University All rights reserved Stellenbosch University https://scholar.sun.ac.za Abstract The reduction in the availability and the ever-increasing prices of fossil fuels, as well as the expensive and insufficient electricity supply, are some of the reasons explaining why the public awareness of the use of alternative cooking methods has increased in recent years. In most rural areas of Africa, the use of wood is even more preferred for cooking than either fossil fuel or electricity, and this has led to deforestation in many areas. However, the time spent on wood collection by women, who often walk kilometres under scorching hot, sunny conditions, can be utilised better in more productive activities. Most of those lacking access to convenient cooking methods live in places with good solar resources and where solar cookers would thrive if developed.
    [Show full text]
  • Solar Cooking – Background Information
    Solar Cooking – Background Information Solar Power There are two types of solar power; • Photovoltaic solar power: the energy created by converting solar power into electricity using photovoltaic solar cells (solar panels) • Solar thermal energy, or direct solar power: the energy created by converting solar energy into heat. Solar cooking does not require any electricity but uses solar thermal energy to cook the food. This means that you can use a solar oven anywhere that has lots of sun. Solar Cookers Solar cookers are used around the world to cook food and pasteurize water for safe drinking. They use a free, renewable energy source and do not pollute the environment. Solar cookers are particularly useful when other sources of fuel are unavailable or to prevent the use of fossil fuels. There are different types and variations of solar cookers but the basic principles of all solar cookers are: 1. Concentrating sunlight: Foil, mirrors, or reflective metal, is used to reflect the sunlight so that it is concentrated and the energy is stronger. 2. Converting light to heat: Parts of the inside of the cooker are colored black. Black surfaces absorb and retain heat, which is important for keeping the cooker hot. 3. Trapping heat: Isolating the air inside the cooker from the air outside the cooker makes an important difference. A plastic cover creates a greenhouse effect within the oven to make sure that the heat is allowed in but can’t escape out. The Environmental Benefits of Solar Cooking Solar cookers prevent deforestation. Cooking is the main source of demand for wood fuel worldwide, and can be a major cause of deforestation.
    [Show full text]
  • Daily Program
    Home Program Author Instructions Sponsors About Santiago, etc. Supporters & Partners Download Area Contact Daily Program Please click on the day or session for more details. If you are a participant and want to download the abstracts, please login here Sunday 03/11 Monday 04/11 Tuesday 05/11 Wednesday 06/11 Thursday 07/11 09:00 Plenary Session: Sector Coupling and Technology El Parque 2 Integration 10:30 Coffee/Tea Break 11:00 Keynote El Parque 2 11:00 Keynote El Parque 1 11:30 Session 1-A: Theme 2.2 El Parque 2 11:30 Session 1-B: Theme 6.1 El Parque 1 11:30 Session 1-C: Theme 4.2 Araucarias 2 11:30 ISREE: Forum on Global Solar Energy Training Araucarias 1 11:30 Forum: Atmospheric Attenuation of DNI for Solar El Coigue Tower Power Plants 11:30 Session 1-D: Theme 8.2 El Canelo 13:00 Lunch 14:00 Industrial Forum - Research meets Business El Parque 2 14:00 Poster Session El Parque 3 P6.1 A Robust Machine Learning Based Simulation of Solar District Heating Systems Mohamed Abokersh, Departament d’Enginyeria Mecànica, Universitat Rovira i Virgili P6.2 A Study on New and Renewable Energy Policy Changes and Market Analysis in Korea Sang Min An, KRIEA (Korea Research Institute of Eco-Environmental Architecture) P6.3 Generation Expansion Planning Considering Storage Systems and Inertia Constraints Pablo Ernesto Gonzalez Inostroza, Departamento de Ingeniería Eléctrica, Universidad de Chile P6.5 Analysis of the Integration of an Electric Bus and an Electric Vehicle with Grid- Connected PV Systems and a Storage System Alexandre de Albuquerque Montenegro, Universidade Federal de Santa Catarina/Brasil P6.6 Models for the Optimization and Evaluation of Photovoltaic Self-Consumption Facilities Llanos Mora-López, Universidad de Málaga P6.7 Community Solar in Brazil: The Cooperative Model Context and the Existing Shared Solar Cooperatives Up to Date Kathlen Schneider, Universidade Federal de Santa Catarina / Fotovoltaica-UFSC P6.8 A Software for Dimensioning of Small Microgrids with PV-Battery Systems Jose Luis Torres-Moreno, Department of Engineering.
    [Show full text]
  • Department Profile Publication
    DEPARTMENT PROFILE The Department of Renewable Energy is engaged in teaching of under graduate and post graduate studies, research and extension activities. The department offers various courses in the discipline of renewable energy technologies mainly focused on solar energy, bio energy, wind energy and relevant areas. The department provides wide opportunity for research in the area of renewable energy keeping in view its environmental benefits. It promotes research on contemporary and futuristic needs of agriculture, industries and societies. Solar powered sustainable transportation, solar thermal based high value agricultural product drying, solar heating and distillation, decentralized grid tied; stand alone and hybrid solar photovoltaic systems, micro wind turbines, agrivoltaic, geothermal energy and artificial intelligence assisted renewable energy systems are the key research areas wherein many technologies have been developed by the students under guidance of faculties. At present the department is entrusted with two centrally sponsored projects under Rashtriya Krishi Vikas Yojana (RKVY), eight departmental research projects under AGRESCO. The department plays key role in outreach of renewable energy based eco-friendly technologies among end users. In addition to this the department organizes seminar, workshop, educational tour and skill development program for dissemination of knowledge in the area of renewable energy. Students’ empowerment through active participation in curricular and co-curricular activities is the prime mandate of the department. PUBLICATION Sr. No of Publication No Publication 1 Research Papers in National Journal 05 2 Research Papers in International Journal 25 3 Popular Articles 30 4 Books/Chapters in Books 05 5 Booklets/Pamphlets/leaflets 15 6 Training Manual 06 RECOMMENDATION Sr.
    [Show full text]
  • What's Cooking?
    Understanding Solar Energy Teacher Page What’s Cooking? Student Objective The student: Key Words: • understands how the Sun’s radiation, conduction as heat, can be captured and used convection • given a solar oven, can explain what glazing makes it work and how to improve insulation on the design parabolic • will construct a solar cooker radiation following a given set of plans. reflector solar collector Materials (construction): solar thermal • use materials list for type of cooker thermal energy selected thermal equilibrium • Laboratory Manual Materials (cooking): Time: For each group: 1 - 2 class period(s) to build oven • oven thermometer, or thermometer 1 class for cooking that has a range to at least 300oF • pot holders • disposable aluminum cooking pan (“brownie” size works well) or clear glass covered casserole Background Information: A solar cooker is a type of solar thermal collector. It “gathers” and traps the Sun’s thermal (heat) energy. Heat is produced when high frequency light (visible and ultraviolet) is converted into low frequency infrared radiation. Ultraviolet and visible light easily pass through glass, however when they strike a darkened surface they are converted into long wave infrared radiation (heat). The glass (called glazing on a solar collector) traps these long waves. For example, on a sunny day, your car with the windows rolled up becomes a solar collector. The glass lets in the Sun’s energy, traps the thermal energy, and the air inside your car becomes hot. As more light enters the car, the air gets even hotter, until we say that it feels like an oven inside.
    [Show full text]
  • Design and Realisation of a Parabolic Solar Cooker
    Int. Symp. On convective Heat and Mass Transfer in Sustainable Energy April 26- May 1, 2009, Tunisia DESIGN AND REALISATION OF A PARABOLIC SOLAR COOKER M. Ouannene, B. Chaouachi, S.Gabsi Research Unit: Environment, Catalysis and Analysis of Processes National School of Engineers of Gabes (E.N.I.G) - Omar Ibn ElKhattab Street -6029 Gabes- Tunisia. ABSTRACT The sun’s energy is really powerful. Solar energy is renewable and it’s free. We can use it to make electricity, to heat buildings and to cook. The field of cooking consumes many fossil fuels such as gas and wood. Million people cannot find enough gas and/or wood to cook, so using solar cookers is a good idea. During this work, we designed, built and studied a parabolic solar cooker. The characteristic equations and the experimental results are given. Keywords: Solar energy, parabolic cooker, realisation and experimentation. INTRODUCTION Solar cooking is a simple and own technology. Nichols [1993] has shown that the concept of solar cooking began over 220 years ago and was used by the French Foreign Legion starting in the 1870's. It makes possible to reduce the costs of cooking and does not employ any raw material expensive or polluting. Moreover it has a slow cooking; the food is not degraded and preserves all their nutritional and gustatory qualities. All solar cookers work on the principle of concentrating the direct solar rays to raise food or water temperatures to cooking. Cooking temperatures begin at about 65°C although temperatures of 120°C to 200 °C are preferred. Various designs of the solar cookers were studied in order to optimize their performance.
    [Show full text]
  • Solar Thermal Systems Module (Solar Cookers and Solar Water Heaters)
    S olar Thermal Systems Module Trainers Textbook Study materials in Renewable Energy Areas for ITI students Ministry of New and Renewable Energy Government of India Content Development, Editing, Design and Layout New Concept Information Systems Pvt. Ltd E-mail: [email protected] www.newconceptinfo.com Study Materials in Renewable Energy Areas for ITI students Trainers Textbook Solar Thermal Systems Module (Solar cookers and Solar water heaters) Ministry of New and Renewable Energy Government of India Study Materials in 1 Renewable Energy Areas for ITI students Contents Unit 1. Introduction to Solar Energy 5 1.1 Solar energy 5 1.2 The need to use solar energy 5 1.3 Basic principle 5 1.4 Factors to consider for using solar energy 6 1.5 Measuring Solar Energy 7 1.6 Applications of solar energy 7 Unit 2. Solar Thermal Energy 9 2.1 Solar collectors 9 2.2 Working principle of a solar collector 9 2.3 What is heat? 10 2.3.1 Understanding Heat Movement 10 2.3.2 Conduction 10 2.3.3 Convection 10 2.3.4 Radiation 10 2.4 Solar thermal energy applications 11 2.4.1 Water heating 11 2.4.2 Solar cooking 11 2.4.3 Solar drying 12 2.4.4 Desalination / Distillation 12 2.4.5 Solar Pasteurisation 12 2.4.6 Solar thermal energy in architecture 13 Unit 3. Solar Cookers 14 3.1 Solar cooker 14 3.2 Basic principles of solar cooking 14 3.3 Advantages and limitations of using a solar cooker 14 3.4 Box solar cooker 15 3.4.1 Description 15 3.4.2 Precautions to take 17 3.4.3 Raw Materials Required For Fabrication 17 3.4.4 Standard testing procedure and
    [Show full text]
  • Evaluation of Thermal Energy Storage Materials for Solar Cooker
    Solomon Abate Evaluation of Thermal Energy Storage Materials for Solar Cooker Helsinki Metropolia University of Applied Sciences Degree Bachelor of Engineering Degree Programme Environmental Engineering Thesis Date 05.12.2014 Abstract Solomon Abate Author(s) Evaluation of Thermal Energy Storage Materials for Solar Title Cooker Number of Pages 26 pages + 7 appendices Date 05 December 2014 Degree Bachelor of Engineering Degree Programme Environmental Engineering Specialisation option Renewable and Energy Instructor(s) Antti Tohka, Senior lecture. The performance of a solar thermal energy storage system using Lapland granite rock fragments 2-4 cm in diameter were assessed using a scaled-down model. The thesis deals with a selected medium that absorbs and stores solar heat during the day time and releases it when the sun was not shining. A storage rock bed of 5.89 kg with 30 cm x 30 cm base area and 6 cm thickness was placed at the bottom of a solar cooker and painted with black color to increase thermal absorption. The overall performance of a solar cooker i.e. the temperature with and without thermal energy storage (TES) materials was moni- tored for 20 hours. Solar energy is collected for 4 hours and the solar cooker temperature change was studied while solar radiation was zero. When TES materials were used the temperature was above 40°C for 3 hours and 30 minutes; however, without TES materials the solar cooker retain the heat for only 45 minutes. The average of solar radiation re- ceived over a specified period of time during 13:00 to 17:00 was estimated 798KJ.
    [Show full text]
  • Solar Energy for Cooking and Power Generation: an Analysis
    International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395 -0056 Volume: 03 Issue: 06 | June-2016 www.irjet.net p-ISSN: 2395-0072 Solar Energy for Cooking and Power Generation: An Analysis H. T. Abdulkarim1, A. Nasir2, J. Y. Jiya3 1Senior Lecturer, Dept. of Electrical/Electronic Technology, College of Education, Minna, Nigeria 2Senior Lecturer, Dept. of Mechanical Engineering, Federal University of Technology, , Minna, Nigeria 3Lecturer, Dept. of Dept. of Mechanical Engineering, Federal University of Technology, , Minna, Nigeria ---------------------------------------------------------------------***--------------------------------------------------------------------- Abstract -Solar energy currently represents the most [2,3]Photovoltaic (PV) electricity generation is a abundant inexhaustible, non-polluting and free energy proven, commercially available technology [2] resources that could be used economically to supply man’s increasing energy demands. The economic importance Since the beginning of civilization, the use of energy associated with the use of solar energy for cooking and has been a key to survival. The utilization of energy power generation outweighs that of using non-renewable depends on two factors; available resources an fossil fuel as an energy source. This paper, therefore, appropriate technology. The major energy resources presents the availability and analysis of solar energy for in use today are derived mainly from nuclear and cooking and power generation. The technology involving fossil fuels. These sources of fuel are non-renewable the collection and conversion of solar energy into useful and exhaustible and their explorations are quite heat and electricity was discussed. The performance of the existing solar systems was analyzed to buttress the need expensive. In most developing countries, wood has to divert attention towards the utilization of the been the major fuel for cooking, roasting and baking.
    [Show full text]