Renewable energy sources include solar energy, wind energy, hydropower, biomass energy, geothermal energy, etc.
1. Solar Energy
Solar energy is a renewable energy source that has played a huge role in production and human life for over 5,000 years. The uses of solar energy have evolved significantly over time, from heating to powering satellites in space. However, there is still a lack of energy-efficient and low-cost solar power generation equipment in homes and various buildings.
2. Wind energy
When people look at the sea, they find many wind turbines at sea level. Although they may not be the most attractive, they are very efficient, and that is what wind power does, because Europe and some areas have endless coastlines, so wind powere is more common in these places. Wind turbines are like the air intake of a jet engine. When air enters, it first encounters a set of stationary blades, which direct the air toward a set of rotating blades.
3. Hydroelectric generation
Hydroelectric generation uses water with potential energy from high places such as rivers and lakes to flow to low places, converts the potential energy it contains kinetic energy from the hydraulic turbine, then uses the hydraulic turbine is the driving force that drives the generator to produce electrical energy. The height of the water, the weight of the water, and even the speed at which the water flows can be used to generate electricity. The large number of rivers and different types of water flows on Earth make it possible to install a large number of hydroelectric power stations.
4. Biomass energy
The appcation of biomass energy is becoming more and more common in daily life. Biodiesel can power cars, buses and commercial vehicles; Biomass generators can provide electricity to homes and new sources of biomass energy are being discovered every day.
5. Geothermal energy
Geothermal energy is natural thermal energy extracted from the earth's crust and exists in the form of heat. causes volcanic eruptions and earthquakes. Because radioactive particles decay slowly, geothermal energy is a renewable energy source. And as long as the Earth continues to rotate, geothermal energy will always exist, and there is no need to worry that it will run out.
What are the applications of water with high specific thermal capacity in daily life?
It is true that the steam of water has no effect shape and flightume fixed.
Water vapor has no fixed shape or volume. Water vapor is a colorless, odorless, transparent and heavy object. It is a gas, invisible to the naked eye, and has no fixed volume. Water vapor is a gas formed by the vaporization of liquid water when heated, which is visible to the naked eye; to the naked eye and has no fixed shape.
Expansion of knowledge:
Water vapor is a colorless, odorless and transparent gas composed of water molecules. Water vapor occurs widely in nature and is an important part of the water cycle and climate change.
How is water vapor formed? When water is heated, the water molecules begin to become active and move continuously. As temperature increases, the energy of water molecules increases, eventually overcoming surface tension, turning into gas, and leaving the water. This processs is evaporation. When water vapor forms, it can float in the air and spread in all directions with the wind.
Water vapor plays an important role in nature. First, water vapor is an important component of the atmosphere. Water vapor in the atmosphere can absorb heat radiated from the ground and maintain the Earth's thermal balance. Additionally, water vapor can also affect cloud formation and precipitation processes.
When water vapor in the air reaches a saturated state, clouds form. Water droplets in clouds gradually increase in size and fall to the ground, forming precipitation.
In addition to water vapor in the natural environment, human production and life also involve the application of water vapor. For example, in industrial production, water vapor is widely used for heating, cleaningtravel, transformation and other aspects. In our daily lives, we also use water vapor to clean objects, cook food, etc.
In addition, water vapor can also be used in power generation, transportation and other fields. For example, thermal power plants use large amounts of water to generate steam to drive turbines that produce electricity.
However, water vapor also has negative effects. For example, in some cases, excess water vapor can cause excessive humidity, leading to adverse effects on human health and the environment. A high humidity environment can easily lead to the growth of mold and bacteria, posing a threat to human health. Additionally, excess water vapor can also cause problems such as dampness and corrosion of building walls and furniture.
In short, water vapor is an integral part of nature and human life. It has an important role and wide application, but it also has negative effects. Understanding and rationally using water vapor is essential to maintaining the health of humans and the natural environment.
1. Application of water cooling system
People have long started to use water to cool heating machines, heat sinks and processors can do this. be used The center contacts allow the heat generated by the CPU to be transferred to the heat sink through thermal conduction, and then the fan is used to exhaust the dissipated heat into the air.
However, the specific heat capacity of water is much greater than that of air, so water can be used instead of air as a means of heat dissipation, and water with internal energy hasRaw water can be discharged by a water pump to form a water cooling system. In this way, the water temperature will not increase significantly after the heat generated by the CPU is transferred to the water, and the heat dissipation performance is better than that of the above-mentioned system which directly uses air and fans.
The cooling system of heat engines (such as car engines, power plant generators, etc.) also uses water as a coolant, which also takes advantage of the large specific heat capacity of seawater.
2. Application in agricultural production
Rice is a temperature-loving crop when growing seedlings in March and April each year, in order to avoid frost, farmers generally use the method of culture. “shallow water and frequent irrigation”, i.e.pouring water into the rice field overnight in the evening, then emptying the water from the rice field when the sun rises the next day. According to the characteristics of the large specific heat capacity of water, it cools down at night. At this time, the temperature of the plants does not change much, which plays a role of thermal insulation in the plants.
3. Hot water heating
Radiators and hot water bottles for heating in winter.
4. Use the large specific heat capacity of water to adjust the climate
Impact on temperature: after impounding the Three Gorges Reservoir, the world's largest artificial lake will become an "air" air conditioner ", making the mountain city Chongqing's climate is warm in winter and cool in summer. It is estimated that summer temperatures could drop by 5 degrees Celsius and winter temperatures could rise by 3 to 4 degrees Celsius.
Why the mountain towns of Chongqing become warm in winter and cool in summer? It turns out that with the creation of reservoirs, the water has increased and the specific heat capacity of water is large, so the temperature changes less when exposed to cold or heat, so that the temperature in summer will not rise any higher than before. , and the temperature in winter will not drop lower than before, keeping the temperature relatively stable, so that the tank becomes a huge "natural air conditioner".
4. Others
For example, in the hot summer, the ancient royal family used running water to flow from the roof, which played a role in preventing heat stroke and Hawaii's cooling ; is an island at the bottom of the Pacific Ocean, where the climate is pleasant. Besides the attractive scenery, another main reason is that it is warm in winter and cool in summer.
Detailed information:
Water (an inorganic substance composed of hydrogen and oxygen): Water (chemical formula: H?O) is an inorganic substance composed of hydrogen and oxygen and does not is not toxic. It is a colorless and odorless transparent liquid at normal temperature and pressure, known as the source of human life. Water, including natural water (rivers, lakes, atmospheric water, sea water, groundwater, etc.) {contains impurities}.
Distilled water is pure water, artificial water (water obtained by combining hydrogen and oxygen atoms through a chemical reaction). Water is one of the most common substances on earth. It is an important resource for the survival of all life, including inorganics and humans. It is also the most important component of living organisms. Water has played an important role in the evolution of life. It is a non-renewable resource in the narrow sense and a renewable resource.elable in the broad sense.
Pure water can conduct electricity, but very weakly (conductivity can be ignored in daily life), and it is an extremely weak electrolyte. Water in daily life contains more positive and negative ions due to other dissolved electrolytes, and its conductivity is improved.
For humans, water is the most important substance after oxygen. In the adult body, 60 to 70% of its mass is made up of water. The proportion of water in children's bodies is even higher, reaching almost 80%.
If a person does not eat and relies only on nutrients stored in their body or consumes their own tissues, they can live for a month. But it is difficult to go even a week without drinking water. Loss of 10% of water in the body threatens health, and loss of 20% of water endangers life. This shows the importance of water for life.
Water also hashave the effect of treating common illnesses. For example: a cup of cold boiled water in the morning can treat pimples; drinking water half an hour after a meal can be used to lose weight; the massage effect of hot water is a powerful soothing agent,It can relieve insomnia; drinking large sips of water can relieve constipation; a glass of water before bed is good for the heart; you can use salt water to induce vomiting if nausea occurs.
Baidu Encyclopedia: Water