Yes.
Solar water heaters are very efficient. On sunny summer days, the water temperature can reach boiling point in less than two days if the water is not used for a long time, such as when traveling or a travel. , the water tank will be exposed to high temperatures and pressures for a long time. In this state, it will promote the aging of the seal ring, accelerate the aging and shrinkage of the polyurethane, and sometimes the exhaust will not be too smooth. high pressure will cause the water tank to swell and scale, thereby shortening the life of the water tank.
Therefore, if you are away from home for a long period of time, you should ask someone else to run hot and cold water frequently, or place a cover on the vacuum tube collector to block the sun, then remove it after your returnur at home.
About solar energy conversion: The sun heats the air and ground, and the solar energy is converted into ?
Internal energy Internal energy, the heated air rises, and the air circulates to form wind, And converted into ?
Mechanical energy (or kinetic energy of wind) Mechanical energy (or kinetic energy of wind)The sun evaporates some of the water on the ground, and the evaporated water vapor rises into the sky to form clouds, and the clouds fall as rain, snow, etc. , flow into the river and the solar energy is converted into ?
Mechanical energy (or gravitational potential energy and kinetic energy of water) Mechanical energy (or gravitational potential energy and kinetic energy of water); Plants absorb solar energy and carry out photosynthesis, and the solar energy is converted into ?
p>Chemical energyChemical energyAfter the plants are eaten par animals, they transfer their chemical energy to animals.
Chemical energyChemical energy
Analysis: Solar energy is an important energy source that can be converted into a variety of energies.
As the temperature of the same object increases, the internal energy will increase.
Wind is caused by air flow, which contains the mechanical energy of the air.
Vaporization refers to the process by which matter changes from a liquid to a gas, which includes evaporation and boiling.
Liquefaction refers to the process by which matter changes from a gas to a liquid state.
According to the specific examples in the question, analyze the energy conversion respectively.
Solution: When the sun heats the earth, the earth's temperature increases and the internal energy increase. Solar energy is therefore converted into internal energy.
The wind is caused by the flowx of air. The air therefore contains mechanical energy, which is converted from solar energy.
Once solar energy increases the temperature of the ground and water surface, the water evaporates and turns into water vapor. Water vapor travels to high altitudes and liquefies to form rain and fall, giving it mechanical energy.
Plants can convert solar energy into chemical energy and store it through photosynthesis. After eating plants, animals convert their chemical energy into their own energy.