When solar radiation is projected on an object, part of the radiant energy will be absorbed, part of the radiant energy will be reflected, and…
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Basic way of heat transfer
Heat transfer is the study of the law of heat energy transfer between objects or inside objects due to the existence of temperature differences. The…
Five regions of China’s solar energy resources
(1) Class I region The annual sunshine time is 3 200~3 300h, and the total amount of solar radiation received per square meter in one…
China’s solar energy resources
The boundary of China starts from the south of Zengmu Shoal in the Nansha Islands near latitude 4°N in the south to the center of…
The main factors affecting ground solar irradiance
1. Sun altitude That is, the altitude angle at which the sun is above the horizon. It is often represented by the angle between the sun’s…
What is solar irradiance?
How to measure the amount of solar radiation energy, what factors affect the amount of sunlight it reaches the ground, and what are its characteristics?…
Colored spectrum
In the previous article “How is the energy of the sun transmitted“, it is explained that the sun transmits energy to the earth’s surface in…
What are the effects of various substances in the Earth’s atmosphere on solar radiation?
Oxygen, ozone, water, carbon dioxide and dust in the atmosphere have different absorption effects on solar radiation. Among them: the content of oxygen in the…
How is the energy of the sun transmitted?
The sun is the main source of light and heat on Earth. The sun does not stop for a moment to send its enormous energy…
Incomparable energy
The interior of the sun has incomparable energy, and it emits huge amounts of light and heat without stopping for a moment. The sun is…