Not the same. The photoelectric conversion efficiency of the battery panel refers to the conversion efficiency of the battery sheet, while the conversion efficiency of the battery module refers to the efficiency including the frame. According to this explanation, the two are different. The battery panel is higher than that of the module. Conversion efficiency (the full name is photoelectric conversion efficiency) is a measure of the ability of solar cells to convert light energy into electrical energy, as well as conversion between foods at different trophic levels.
Examples of directionality of energy conversion and conservation
(1) Solar cells absorb sunlight and solar cells convert solar energy into electrical energy;
(2) ① The waste gas generated after the combustion of fossil fuels contains gases such as sulfur dioxide, which cant easily cause air pollution, so this approach is feasible.
②Using disposable plastic foam tableware and plastic bags will cause white pollution to the environment, so this approach is wrong.
③The heavy metal mercury contained in the battery will seep into the ground and pollute water sources. Therefore, developing mercury-free batteries can protect the environment, so this approach is feasible.
So the answer is: (1) Solar cells convert solar energy into electrical energy; (2) ①③.
How to measure the energy conversion efficiency of solar cells
Examples of the directionality of energy conversion and conservation are the following:
1. Generation of heat by friction: This is a common phenomenon in life. When two objects rub against each other, the kinetic energyique is transformed into thermal energy. For example, when you rub your hands, the kinetic energy of your hand movement is converted into thermal energy, thereby warming your hands.
2. Generator: A generator is a device that converts mechanical energy into electrical energy. When a generator operates, its rotor turns, which causes the magnetic field in the stator to move, creating an electric current in the wires.
3. Plant Growth: Plants convert solar energy into chemical energy through photosynthesis. This process requires water and carbon dioxide and produces oxygen and glucose.
4. Rocket Liftoff: Rockets use fuel (such as liquid oxygen and liquid hydrogen) to propel themselves. When a rocket burns fuel, the chemical energy is converted into heat and kinetic energy, allowing the rocket to take off.
5. Reactornuclear: The nuclear reactor uses nuclear energy to generate heat. Nuclear energy is converted into energy by protons and neutrons in the nucleus during nuclear reactions.
6. Tidal Energy: Tidal energy is the energy generated by the gravitational pull of the moon and sun on Earth's sea water. This gravitational energy is converted into the kinetic and potential energy of the seawater.
7. Wind Power Generation: Wind power generation is a means of converting the kinetic energy of wind into electrical energy. Wind turbines use the kinetic energy of the wind to turn a rotor, producing an electric current.
8. Hydroelectricity: Hydroelectric plants use the power of water flow to spin turbines to produce electricity. It is a way of converting the kinetic energy of water into electrical energy.
9. Ingeothermal energy: Geothermal energy is the energy transferred from thermal energy inside the earth to the surface. This thermal energy comes from the nuclear disintegration of the Earth. Geothermal energy is converted into electricity for heating and generating electricity.
10. Solar Cells: Solar cells use solar energy to convert light energy into electrical energy. When sunlight hits a solar cell, the electrons in the cell are excited, creating an electric current.
11. Fuel Cell: A fuel cell is a device that converts the chemical energy of hydrogen and oxygen into electrical energy. When a fuel cell burns, chemical energy is converted into electricity and heat.
12. Food Chain: In nature, energy is transferred throughout the food chain. Each trophic level getsenergy from the previous trophic level and transfers the energy to the next trophic level. This is a classic example of energy transformation and conservation.
13. Cosmic Rays: Cosmic rays are high-energy particles that enter the Earth from space. When these particles enter Earth's atmosphere, they interact with atomic nuclei in the atmosphere, producing secondary particles that continue to interact with other particles in the atmosphere, ultimately creating phenomena that we can observe, such as lightning and solar radiation. This is another example of energy transformation and conservation.
14. Electromagnetic waves: Electromagnetic waves are waves in which electric fields and magnetic fields oscillate alternately. These waves can propagate in a vacuum or in a medium. The speed of propagation of electric wavestromagnetics is equal to the speed of light, and their frequency and wavelength remain unchanged during propagation. This is another example of energy transformation and conservation.
15. Quantum Mechanics: In quantum mechanics, energy exists in quantum form. Each quanta has a specific energy and momentum, and the energy of these quanta cannot be infinitely divided into smaller parts. It is the latest example of energy transformation and conservation.
The solar cell generates electricity and measures light at the same time.
For example: solar cells are used to generate electricity in Chengdu. Photometric measurement shows that the radiation is 1000 W/m2, and a solar panel (single size of 1.5 m2) generates electricity under 1000 W/m2 radiation. m2 is 240 W/block, the output power is 240/1.5 = 160 W/m2 and the energy conversion rate est output divided by input power (160 W/m2)/(1000 W/m2) = 16%