Solar oven page 6 of 6 a renewable energy project kit the pembina institute 5. Barring the use of an indoor solar testing laboratory, the testing of solar cookers must rely, to some. The wilson solar cooker is a device that captures solar energy, converts it into thermal energy via a lithium nitrate substrate, and stores it for later user in a well insulated container. The solar cooker was tested for cooking rice, pulses, grains. Here we discuss the science and environmental effects of a solar cooker through handson activities. Lesson guide build a solar oven lesson 92kb pdf file. Cooking with the sun creating a solar oven activity. Build a solar oven build a solar oven teacher page objective to demonstrate an understanding of engineering design process while utilizing each stage to successfully complete a team challenge. 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 report pertains to an optical ray trace analysis of a panel type solar cooker reflector. Save money and cook outdoors with this diy home project. The use of solar cookers is much needed in many regions with good solar radiation intensity throughout the world.
Characterisation and design methods of solar cookers klemens schwarzer a, maria euge. Selection of solar collector the solar energy can be used for the need of cooking. All questions are answered correctly and completely. To learn about the problems which come with cooking in the developing world and how solar power can help. A parabolic solar cooker might be used like a stovetop by heating a pan or pot to a high temperature. The procedure section of this project idea gives you stepbystep instructions on building a simple boxtype solar oven. Solar cooking with the sun 2 a transparent cover usually glass, and one or more reflective panels that allow more sunlight to enter the cooking chamber.
A smallscale photovoltaic and thermal hybrid casseroletype solar cooker has been developed and tested for various food recipes. Appropriate recommendations are made in order to enhance current performance of solar cookers and future potential of this technology is evaluated. The following tests were carried out on the selected solar cooker. This report pertains to an optical ray trace analysis of a parabolic type solar cooker. This allows for cooking with low or no sunlight, and for six hours after the charging of the cooker, which is impossible with the solar cookers which are currently in the market. Information notes the building of the solar cookers could take up to half a day. One of needs most famous solar cooks, kathryn mccoy of tennessee, offers these tips for cooking with a solar oven. Students learn about using renewable energy from the sun for heating and cooking as they build and compare the performance of four solar cooker designs. Put the container inside with about 2 inches of water and a thermometer. And a solar concentrator oven can be used like a conventional oven. Manufacturing and testing of parabolic solar cooker. Temperatures can get so hot that you can fry food or pop popcorn. 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.
Solar cooker project rubric the solar cooker project must meet or exceed the requirements under each category to earn maximum points for that category. 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. The office of instructional testing at bmcc supports the college community by maintaining exemplary testing standards and practices, protecting the confidentiality of personal data, providing resources that support intellectual and personal growth of test takers, and creating an optimal testing environment that meets the needs of students, faculty, administration and all other bmcc community. Development of test standards for thermal performance of solar cookers. Characterisation and design methods of solar cookers. A box cooker is most effective when it is used like a crockpot slow cooking or low heat over a long time. Nevertheless the solar cooker was designed in the year 1950. In this article, well find out how sunlight becomes heat, check out the different types of cookers available and how they work, see what makes solar cooking a potential lifesaver in many parts of the world and.
Designers as far back as the 19th century recognized the potential of the suns energy to. To make this into a complete science fair project, you will need to choose some aspect of the solar oven design to improve and test. This article includes a list of necessary materials and directions for making the solar cooker. Solar cooking with the sun 3 solar cookers are used differently. For best results, solar cooking requires continuous, direct sunshine throughout the cooking period. An engineering design challenge to design and build a solar box cooker, and test it out to see if it works well enough to make smores. This webinar will focus on how solar cooker evaluations can. Sustainability 6th grade classroom overview parabolic solar cookers are a trend of innovative cooking device that.
The principle of cooking meals from the sun was largely developed in the french foreign legion, in the 1870s working principles. The ovens must collect and store as much of the suns energy as possible. The solar box cooker, like other solar cookers, needs direct sunshine to operate and produces zero emission. To know about what is a solar cooker and its working, lets have a look into how to make a solar cooker, various advantages and disadvantages of a solar cooker. 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. We think that any cooker that scores less than 45% is best avoided, so we highlight it as a dont buy. Solar cooker reflector optical evaluation and design evolution pdf document 625kb. A solar cooker can do almost anything a stove or an oven can do, only it uses a natural nonpolluting, free, abundant energy source. 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.
Then, as time permits, they make and eat quickcooking food like marshmallow and chocolate smores. 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. 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. It was a windy day, so the cookers may not have performed the best they could. Your choice should be based on your background research, and on the experience gained from. Evaluating the international standard procedure for testing solar cookers and reporting results. A solar cooker is a device which uses the energy of sunlight to heat food or drink or to sterilize it. At first, solar cooker was put to test for noload test without stone pebbles the solar cooker was experimented for load test. Allow the cooker to reach its maximum temperature about 200 degrees c or higher and maintain that for an hour or more.
They explore the concepts of insulation, reflection, absorption, conduction and convection. Set the cooker on a dry, level surface in direct sunshine away from potential shadows. Students experiment with heat transfer through conduction by how well the oven is insulated and radiation by how well it absorbs solar radiation. Which provides educators with realtime reports on student performance. Initial setup figure 1 shows the three dimensional drawing of the parabolic solar cooker. 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. Thermal performance evaluation of box type solar cooker. Solar energy is the most essential renewable energy which we can get from the sun.
Reporting, solar, solar cooking, testing 1 purpose and scope 1. Performance test of parabolic trough solar cooker for. Testing was performed over 3month period between may and july 2016, with 1 l. According to solar cooker international, solar box cookers cook at moderate temperatures and often can accommodate multiple pots. Food is placed inside the changer in a darkcolored pot. The reasons are economical, as the price of fuel for cooking is no longer affordable by many families. Box cookers can reach temperatures in the mid to high 200 degrees f.
The history of solar cookers goes back to the eighteenth century. The vast amount of information gathered through this investigation provided fsec staff unfamiliar with this topic a better understanding of solar cooker technology. 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. Make sure your test container has black paint on it the color black will absorb the suns energy. The ability of a solar cooker to collect sunlight is directly related to the projected area of the collector perpendicular to the incident. Add premeasured quantities of test water to cookers and cover with pot lids. Pdf design, construction and performance evaluation of. Review of solar cooker application and testing principles of operation of solar cookers the principle of solar cooking is that rays of sun ar e converted to heat and conducted into the cooking pot.
In load test, the cooker was loaded with three cooking utensils each containing 400g of water. A paraboloid solar cooker is a spherical parabolic cooker. To learn about the basic principles of solar cooking. The advantages are speed and the potential to cook when it is cool outside. The main features of the solar cooker are the absorber plate, the parabolic trough collector, the storage system and the pipe networking system. Asae standards are consensus documents developed and adopted by the. A canning jar painted flat black works fine to boil water. The performance of the constructed solar cooker was tested using the standard procedure for testing. Challenge the team mission is to design and build a solar box cooker, and test it out to see if it works well enough to make smores. Engage in the engineering design process to complete a team challenge building a simple solarpowered oven. Out of these cookers only paraboloid type solar cooker have received the commercial attention. Setup solar cookers and place test pot bottom in cooker. Students learn to test the basic cooking ability of their solar cooker model from part a by melting a chocolate. Development and performance testing of solar cookers.