Is a hybrid car a new energy car?
Broadly speaking, a hybrid vehicle refers to a vehicle in which a vehicle drive system is a combination of two or more single drive systems that can operate simultaneously. The power of the vehicle is determined by the individual drive system alone or according to the actual state of travel of the vehicle. Jointly provided.
The so-called hybrid vehicle generally refers to a Hybrid Electric Vehicle (HEV), which uses a conventional internal combustion engine (diesel engine or gasoline engine) and an electric motor as a power source, and some engines have been modified to use other alternative fuels. Examples include compressed natural gas, propane and ethanol fuels.
Hybrid vehicles are generally divided into three categories based on the hybrid drive linkage:
Series Hybrid Electric Vehicle (SHEV): The HEV power system is mainly composed of three powertrains, including an engine, a generator, and a drive motor, in series.
Parallel Hybrid Vehicle (PHEV): Both the engine and the generator are powertrains. The power of the two powertrains can be superimposed on each other and can be output separately. Currently PHEV is more popular, which is plug-in hybrid power, its power is not just gasoline fuel, can be directly charged as a power, it can be said that the transition of pure electric vehicles and hybrid vehicles, is the market in the short term the mainstream of the market.
Hybrid Hybrid Electric Vehicle (PSHEV): An electric vehicle consisting of a combination of tandem and parallel type structures is mainly composed of an engine, an electric-generator and a drive motor.
No matter what kind of hybrid vehicle, it belongs to new energy vehicles. Hybrid vehicles have high fuel economy performance and superior driving performance. Hybrid vehicles use fuel for their engines. When starting and accelerating, they have the assistance of electric motors, so they can reduce fuel consumption. In other words, they are the same size. Compared to cars, the cost of fuel is even lower; moreover, the auxiliary engine's electric motor can generate powerful power at the instant of start-up, so owners can enjoy more robust start-up and acceleration. At the same time, it can also achieve a higher level of fuel economy. Only this point has already met the large demand for energy-saving and environmental protection of new energy vehicles.
Why is the air dry in winter?
What we call humidity is divided into two kinds, absolute humidity and relative humidity.
Absolute humidity refers to the amount of water molecules per cubic meter of air.
Relative humidity refers to the ratio between "absolute humidity" and "saturation humidity".
"Saturation humidity" refers to the absolute humidity required for the water vapor in the atmosphere to reach saturation at a certain temperature. Saturation humidity is also closely related to temperature. The higher the temperature, the greater its value.
The drying or wetting we usually feel does not have a great relationship with absolute humidity, but mainly depends on relative humidity. Therefore, this issue should be discussed as follows:
On the one hand, when the temperature is low in winter and the saturated vapor pressure is small, the absolute humidity of the air is small.
On the other hand, when the temperature is low in winter, the value of saturated humidity is also small. When the absolute humidity is the same, the relative humidity is greater.
Generally speaking, there are positive and negative effects of temperature on humidity. Which role plays a major role should be discussed according to the actual situation.
In some areas it gets dry in winter, while in others it may get wet. The temperature is low in winter. Even if the relative humidity is 100%, the water vapor content is still very low. After we inhale air, the air is heated to body temperature, and the relative humidity will become very low, so we will feel dry. The air we exhale is basically saturated steam at body temperature, so we consume a lot of water when we breathe.
The air near the skin will also be heated, so the moisture of the skin is also easy to evaporate
The doctor suggested that an Aroma Diffuser should be placed indoors, which can effectively and immediately solve the problem of indoor air drying, humidify the air and solve the problem of air drying. The ultrasonic aroma diffuser should be used, and the fog should be sprayed out through vibration
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