What email address or phone number would you like to use to sign in to Docs.com?
If you already have an account that you use with Office or other Microsoft services, enter it here.
Or sign in with:
Signing in allows you to download and like content, and it provides the authors analytical data about your interactions with their content.
Embed code for: Solar Cooker-final
Select a size
Students: Tessie Jasmine Victor Teacher: Ms. Alannah Class: 10E Date: 3/19/2017
Currently, our ET teacher Ms. Twin showed us a documentary about the technology development in China, it also revealed the phenomenon of various sorts of pollution. In that case, we decided to build a green technology to solve this problem. As we all know, the sun provides available solar energy that we can utilize it in various uses. This kind of energy is called green energy which means it won’t produce any emissions or cost any energy. The green technology (solar heater) we designed is made up of plenty of mirrors, Aluminum foil or metal. When the light gets into the solar heater, the materials we used will help the light concentrate on only one point. In that way, the temperature will go up, the light energy converts to the heat energy.
Statement of the Problem
Design and build a green technology that can save energy.
The green technology must fully cook an egg in the shortest time period
The device must utilize maximum efficiency of the renewable energy through design
Dimensions no larger than 1m x 1 m x 1.5 m (l x w x h) and no heavier than 10 kg
The major color of the pot is black since this sort of color can absorb all kinds of colors and doesn’t reflect them, so black can have more heat than other colors when they are in the same situation. In that case, the egg will be fried faster.
no larger than 1m x 1 m x 1.5 m (l x w x h) as Ms. Alannah requires.
Geometry (shape): A mirrored surface with high specula reflectively is used to concentrate light from the sun, and focus it on a small area. The concentrated level depends on the geometry of the surface.
Cutting edge materials: Some parabolic solar cookers include cutting edge materials and designs which make the solar energy have a high energy efficient.
It is important to reduce the convection (enhance the efficient of the heat transfer) by isolating the air inside the cooker. Using the glass covers on the products to strengthen the light absorption. Pots and pans used on the solar heater should be painted in black to maximize the absorption.
The weather should be sunny in order to provide the heat to the solar heater to absorb. When the weather does not meet the requirements, the test needs to be finished with the help of the artificial light.
The efficient of converting (kinds of materials):
The kinds of the receiver materials have an impact on the efficient of converting light energy to heat energy. The conversion will hit the max by using the materials that conduct and retain heat the most.
1. Umbrella (be used to set up the shape of the heater)
2. Pot (be used to set up the shape of the heater)
3. Mirror (be used to refract the light and help to absorb the heat)
4. Plastic (be used to brace the body of the solar heater)
5. Aluminum foil (be used to refract the light and help to absorb the heat)
6. PVC (be used to make the body of the solar heater)
7. Steel wires (be used to set up the shape of the heater)
8. Cardboard (be used to set up the shape of the heater)
9. Newspaper (be used to enhance the efficient of retain the heat)
10. Wood (be used to brace the body of the solar heater)
Real life examples:
As I mentioned before, the solar cooker is constructed based on sun light which means it won’t produce any emissions or cost any energy. In that case, it plays an important role in saving energy and it’s suitable for people who pay attention to environment. The main function is to cook something raw so it can be used during camping as camping doesn’t need too much energy. Also, it can be considered as a way to cook food in case of emergency, so you don’t need to worry when you forget to pay the bills. Meanwhile, the solar cooker is essential when you survive in an extreme situation because it’s liable to build and it can provide heat you need.
http://www.homepower.com/articles/solar-water-heating/basics/what-solar-water-heatinghttp://www.homepower.com/articles/solar-water-heating/basics/what-solar-water-heatinggo up, the light energy converts to the heat energy.