Typical examples of heat sources for heat networks are: gas boilers, Combined Heat and Power (CHP) plants, wasted heat (from industrial processes, wastewater treatment etc.) and biomass fuelled boilers.

What Are the Sources of Heat Energy?

• The Sun.
• The Earth.
• Air.
• Burning Fuels.
• Electricity.
• Waste Heat Recovery.
• Waste Water.

The sun is the main source of heat, warmth, and light for organisms living on Earth.

Natural Sources of Heat Energy

• Solar Energy. The sun is Earth’s major external source of heat energy.
• Geothermal Energy. Geothermal energy comes from within the Earth.
• Biomass. Animal and plant products give us natural heat energy.
• Fossil Fuels.

8 Easy Tips For Heating Your Home Naturally

1. An Open Fire.
2. Air Source Heat Pump.
3. Geothermal Heat Pump Systems.
4. Using Solar Energy.
5. Pellet Stoves and Boilers.
6. Insulate Your Roof and Walls.
7. Dodge the draughts.
8. Underfloor Heating with Natural Stone.

The heat source for our planet is the sun. Energy from the sun is transferred through space and through the earth’s atmosphere to the earth’s surface. Since this energy warms the earth’s surface and atmosphere, some of it is or becomes heat energy.

The core of the sun is so hot and there is so much pressure, nuclear fusion takes place: hydrogen is changed to helium. Nuclear fusion creates heat and photons (light). The sun’s surface is about 6,000 Kelvin, which is 10,340 degrees Fahrenheit (5,726 degrees Celsius).

There are many sources of heat including friction, sunshine, volcanoes, and even nuclear fusion. You can tell how fast molecules are moving by measuring the temperature. The slower the movement of the molecules, the cooler the temperature. The faster the molecules are moving the higher the temperature.

The sun generates energy from a process called nuclear fusion. During nuclear fusion, the high pressure and temperature in the sun’s core cause nuclei to separate from their electrons. Hydrogen nuclei fuse to form one helium atom. During the fusion process, radiant energy is released.

No. The Sun can influence the Earth’s climate, but it isn’t responsible for the warming trend we’ve seen over the past few decades. The Sun is a giver of life; it helps keep the planet warm enough for us to survive.

Nothing is more important to us on Earth than the Sun. Without the Sun’s heat and light, the Earth would be a lifeless ball of ice-coated rock. The Sun warms our seas, stirs our atmosphere, generates our weather patterns, and gives energy to the growing green plants that provide the food and oxygen for life on Earth.

It holds the solar system together; provides life-giving light, heat, and energy to Earth; and generates space weather.

Answer. Sun gives heat and light energy.

Our body creates vitamin D from direct sunlight on our skin when we’re outdoors.

A UV Index reading two or lower means there is a minimal risk of sunburn for the average person. At this level it is suggested to wear sunglasses, use broad spectrum sunscreen and watch out for bright surfaces like sand, water and snow which reflect UV rays, increasing your exposure.

Good UV Index for tanning….What do UV Index and tanning have in common?

TABLE 1. MINUTES OF SUNLIGHT EXPOSURE FOR SUFFICIENT VITAMIN D

UV Index Scale

• 0 to 2: Low. A UV Index reading of 0 to 2 means low danger from the sun’s UV rays for the average person.
• 3 to 5: Moderate. A UV Index reading of 3 to 5 means moderate risk of harm from unprotected sun exposure.
• 6 to 7: High.
• 8 to 10: Very High.
• 11 or more: Extreme.