A solar cooker is a device which utilizes solar energy to cook food. What follows below are step by step instructions that will help you to be successful in your first effort to build this cooker. You can bake bread, cake, scones and even meringues in a solar cooker, although the box cookers are more suit able for baking than the reflector cookers. Design and construction of a wooden solar box cooker with performance and efficiency test. A paraboloid solar cooker is a spherical parabolic cooker. A box cooker cooks a meal in 23 hours depending on sunshine and quantity of food. The building of the solar cookers could take up to half a day and will need adult support, particularly cutting with craft knives. The ovens must collect and store as much of the suns energy as possible. Selection of solar collector the solar energy can be used for the need of cooking. Bonneville environmental foundation bef one adaptation to this solar cooker design is to add a deeper box for cooking larger dishes.
Solar cooking with the sun 3 solar cookers are used differently. This thesis involved research, modeling, and experimentation for the solar collection system of the cooker. If i had a chance to redesign my solar cooker, i would probably make it so that it held the heat better. Standard cooking powers, p s50 w, per solar cooker type. Though the archive is quite useful asis, there is always room for improvement. Setup solar cookers and place test pot bottom in cooker. Testing the solar cooker involves building the circuit that connects the thermistors with the. Here we discuss the science and environmental effects of a solar cooker through handson activities. Proposal for new world standard for testing solar cookers. Muller first determine the solar cooker elevation angle elevation angle arcsin footprint hypotenuse photograph the solar cooker with a camera parallel to the solar cooker elevation angle superimpose geometric shapes and sum areas areas are scaled according to size of cooker. Drawings and instruction documents are in pdf format. Solar cookers can be built in a variety of ways, but there are three important elements necessary in building any solar cooker. If the day is sunny, clear, and warm, the temperature inside the cooker should begin to reach 100 degrees c or more within 20 minutes or so. This design utilizes two boxes as the base of the solar cooker.
Students experiment with heat transfer through conduction by how well the oven is. Allow the cooker to reach its maximum temperature about 200 degrees c or higher and maintain that for an hour or more. The advantages are speed and the potential to cook when it is cool outside. A parabolic cooker cooks faster or higher quantities. It explains advantages and disadvantages of solar cooking and the challenges to change traditional cooking habits. I think that we lost a lot of heat while we were testing the cooker and insulation would probably help.
The solar oven team here at cornell has continuously collaborated with organizations in nicaragua to improve upon the implemented solar box cooker design. Various types of solar cookers exist, harnessing some of these principles. Suitable thermal tests have been proposed and appropriate parameters identified, which pertain to the solar cooker and are relatively independent of the climatic. Manufacturing and testing of parabolic solar cooker. And a solar concentrator oven can be used like a conventional oven. The test standard cooking power curve clearly distinguishes between solar cookers of differing design. Solar cooker project of ades abstract the article describes the contribution of the ades solar cooker project in the south of madagascar. Pdf development and performance testing of solar cookers. Advancing towards achievement of millennium development goals by training rural and tribal women in solar food processing a handson experience at barli development institute for rural women in central india dr.
Take 1 copy of the printed cooker design half of a cooker, see pg. Electric solar cooler is an essential appliances to save the electric energy, it is basic need where the electric energy is not available, as in small towns and rural areas it bipurpose device, it may run by solar as well as electric energy. This report pertains to an optical ray trace analysis of a panel type solar cooker reflector. The cookit of solar cookers international is the most widely used solar cooker so far. Solar cookers dont work at night or on cloudy days.
A reflector of a diameter of 1,4m for instance boils 6 litres of water per hour. Asae standards are consensus documents developed and adopted by the. Another style of solar cooker is a parabolic solar cooker. To learn about the basic principles of solar cooking. Out of these cookers only paraboloid type solar cooker have received the commercial attention. The solar oven team here at cornell has continuously collaborated with organizations in nicaragua to. Temperatures can get so hot that you can fry food or pop popcorn. Benefits of sustainable cooking solutions the need for a solar cooker performance evaluation process dr. The use of fossil fuels such as kerosene and lpg for cooking is expensive.
Solar cooker worksheet pdf parabolic solar cooker pattern pdf. A parabolic solar cooker might be used like a stovetop by heating a pan or pot to a high temperature. Make sure your test container has black paint on it the color black will absorb the suns energy. Boxtype solar cookers are suitable mainly for the boiling type of cooking. Solar thermal collector system modeling and testing for novel. Investigation of reflective materials for the solar cooker john harrison florida solar energy center 24 december 2001 introduction a critical task in developing a solar cooker is to identify reflector materials that would be both suitable for this application as well as economical. Build your own solar oven page 6 of 6 a renewable energy project kit the pembina institute 5. American society of agricultural engineers to meet standardization. Pdf solar cooking is one of the best clean and environment friendly. Solar cooker reflector optical evaluation and design evolution pdf document 625kb.
Pdf design, construction and performance evaluation of. Internationally certified products for pico pv solar products according to laboratory testing standards as defined by iects 6225795 and manufactured to lighting global solar home system kit quality assurance protocols. No efforts have yet been made to sort and catalog that information systematically, which could be an issue future solar oven teams could address. Align and loosely tape the design sheet on the other side of the paper nonreflective side. The parabolic solar cooker or curved concentrator solar cooker concentrates the suns heat onto the bottom or the sides of a potsimilar to a stovetop.
Paul funk member, american society of agricultural and biological engineers the asae s580. This report pertains to an optical ray trace analysis of a parabolic type solar cooker. Today students will build a solar cooker and use it to make smores. The next generation abstract the solar cooking archive archive is the most comprehensive solar cooking web site in existence, and the preeminent internet resource for solar cooker news, construction plans, articles, etc. In solar panel cookers, sunlight is concentrated from above 1. Allow the cooker to reach its maximum temperature about 200 degrees c or higher and maintain that for an hour. A large fraction of the mass of most food products is due to water, and more water may be added in the boiling type of cooking. This thesis aims to solve this problem by designing, building, and testing a mechanical timer. Data was taken from several folders on three of the computers in winter laboratory in thurston hall, and the test data was located in excel files, with descriptions of the tests in word documents.
The testing and cooking needs to be done on a very sunny day and would be well suited to demonstration at a school fete or green day. The results were compared with data taken using the same cooker eighteen months earlier, in may of 1997, with hand held instruments in tucson, arizona. The cooking temperature in this case is close to 100c. The wilson solar cooker is a solar cooker designed to address this problem by converting solar energy and storing that energy as heat in the form of molten salt lithium nitrate. They are simple and relatively inexpensive to buy or to produce. Investigation of reflective materials for the solar cooker. They typically require more frequent reorientation to the sun, but will cook more quickly at higher temperatures, and can fry foods. Combining ergonomic, thermal, and qualitative data into an understandable, reproducible, and. Alan bigelow science director, solar cookers international implementing the sci performance evaluation process pep. Testing and reporting solar cooker performance solar cooking wiki.
It should be noted that the temperature inside box type solar cooker can go from 100 0 c to 140 0 c within 2 to 3 hours when placed in sunlight. Testing is conducted at sci testing centers in california and new york as well as at partnered. An ovenbox design also allows for more insulation options. Food cooks best in dark, shallow, thin metal pots with dark, tightfitting lids to hold in heat and moisture. Set your solar cooker outside to directly face the sun. To learn about the problems which come with cooking in the developing world and how solar power can help. Previously, a prototype had been built without much success in the timing of the device. An effective solar cooker will use the energy of the sun to heat a cooking vessel. Development and performance testing of solar cookers energy.
Solar thermal collector system modeling and testing for. Add premeasured quantities of test water to cookers and cover with pot lids. Cooking works best in the hours leading up to midday and immediately after. A solar cooker was tested according to the standard figure showing cooker in november of 1998, with automated data recording using an electronic datalogger in las cruces, new mexico. Objectives by splitting into 23 person groups, students work in teams to build a. Development of a comparative framework for evaluating the performance of solar cooking devices. Sci testing station for pep designed and assembled by. Indianverified products that follow quality standards defined by the ministry of new and renewable. Any type of food, p articularly food that needs a long cooking time such as beans, samp, rice, meat stews and porridge can be cooked in a solar cooker. After they have built a solar cooker, they can test how well it works with the arduino microcontroller and the thermistors.
Building the all season solar cooker thanks for your interest in the all season solar cooker assc. A canning jar painted flat black works fine to boil water. Information notes the building of the solar cookers could take up to half a day. If you have done another solar activity from the renewable energy unit, ask students what they remember from it and specifically what they remember about solar energy. Development and performance testing of solar cookers. The performance of the constructed solar cooker was tested using the standard procedure for testing. Below is the basic science for solar panel cookers and solar box cookers. The primary goal of this appropriate technology project is to consolidate existing information on solar cooking, as well as evaluate materials and design techniques utilized for the construction of widely used solar box cooker models. C department of physics, covenant university ota nigeria abstract a wooden solar box cooker was successfully constructed with cheap and locally available material with. Proposed protocol for testing solar cookers clean cooking alliance.
I build all my asscs using 4mm corrugated plastic sheets. Solar cooker international, panel cookers incorporate elements of box and curved concentrator cookers. Objectives by splitting into 23 person groups, students work in teams to build a mini solar cooker model that embodies the basic principles of a. Development and performance testing of solar cookers article pdf available in journal of energy in southern africa 183. Solar energy is a nonconsumptive and nonpolluting fuel. A solution to this problem is to create a storedheat solar cooker that may be left during the day and acquired at night to cook meals. The need for a solar cooker performance evaluation process dr. Performance evaluation process pep for solar cookers alan bigelow, ph. Performance evaluation process pep for solar cookers. A transparent heat trap around the dark pot lets in sunlight, but keeps in the heat.
They can build panel or curved concentrator cookers. So, this type of solar cooker is used to cook only those food materials which require gentle heating. A solar cooker, or solar oven, is a device which uses the energy of sunlight to heat food or drink to cook it or sterilize it. A box cooker is most effective when it is used like a crockpot slow cooking or low heat over a long time. Alan bigelow science director, solar cookers international implementing. Dark surfaces get very hot in sunlight, whereas light surfaces dont. Concentrated cooker final report esw solar cooker project. The cooking test assorted chopped vegetables reached. The cookers are the sunstove box cooker, wooden box cooker, panel cooker, reflector cooker with unpolished aluminium r eflectors, r eflector cooker with polished aluminium reflectors and. I would also want to make it so that we could easily adjust the angle of the cooker, so that we can get as much sunlight as possible. Concentrated cooker final report description of the problem. Link downloads the pdf which details how to make the cookit, and discusses solar cooking. Put the container inside with about 2 inches of water and a thermometer. Testing was performed over 3month period between may and july 2016, with 1 l water load.
Hightech versions, for example electric ovens powered by solar cells, are possible, and have some advantages such as being able to work in diffuse light. Compare ambient temperature to cooker temperatures on display and if they are within 2 c then press the reset button to restart test and begin testing. One of needs most famous solar cooks, kathryn mccoy of tennessee, offers these tips for cooking with a solar oven. The cookit is a cheap solar cooker in which rice, pasta. Testing and reporting solar cooker performance american society of agricultural engineers asae is a professional and technical organization, of members worldwide, who are dedicated to advancement of engineering applicable to agricultural, food, and biological systems. Design and construction of a wooden solar box cooker with. Solar cookers international sci developed dedicated instrumentation and software for a performance evaluation process pep to conduct the asae s580.
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