What are the four new energy sources for power generation? What new energy sources are humans currently developing?

New energy generally refers to renewable energy that is developed and utilized based on new technologies. Currently, humans are developing new energy sources including solar energy, biomass energy, hydropower, wind energy, geothermal energy, wave energy, ocean current energy, tidal energy, and thermal circulation between the ocean surface and deep layers. Let us learn more about this common sense!

Contents of this article

1. Four types of new energy power generation

2. What new energy sources are humans currently developing?

3. What are the three major advantages of hydrogen as a new energy source?

Four types of new energy generation

1. Fuel cell:

A fuel cell is a device that converts chemical energy stored in fuel and oxidant directly into electrical energy. When fuel and oxidant are continuously supplied to the fuel cell from the outside, it can generate electricity continuously. Depending on the electrolyte, fuel cells are divided into alkaline fuel cells (AFC), phosphoric acid fuel cells (PAFC), molten carbonate fuel cells (MCFC), solid oxide fuel cells (SOFC) and proton exchange membrane fuel cells (PEMFC). According to the type of original fuel used in the fuel cell, it is roughly divided into hydrogen fuel cells, methane fuel cells, methanol fuel cells and gasoline fuel cells. Fuel cells are not limited by the Carnot cycle, have high energy conversion efficiency, are clean, pollution-free, and have low noise. They have a modular structure, strong building block properties, and high specific power. They can be used for both centralized and decentralized power supply.

2. Biogas power generation:

Biogas has a higher calorific value and better anti-explosion performance than other fuel gases. It is a renewable clean energy source. Biogas is generally used more in rural areas. Traditionally, biogas is mostly used for heating, cooking and lighting. Biogas power generation is a new biogas utilization technology that has emerged with the continuous development of comprehensive utilization of biogas. It uses biogas as engine fuel to drive generators to generate electricity. Due to the urbanization process in large cities, the use of garbage biogas to generate electricity has also become a hot spot for renewable energy. In my country, large cities such as Shanghai, Beijing, and Shenzhen are building or preparing to build garbage biogas power plants. my country's first garbage biogas power plant was built in October 1998 at the Tianziling landfill in Hangzhou.

3. Tidal power generation:

The working principle of tidal power generation is similar to that of general hydroelectric power generation. It builds a dam to separate the estuary or bay near the sea from the sea, forming a large reservoir. The generator set is installed inside the sea-blocking dam, and most of the machines are underground. The potential energy difference of tidal fluctuations is used to drive the hydroelectric turbine generator set to generate electricity.

4. Geothermal power generation:

The earth is a huge heat storehouse. According to scientists' calculations, the global potential geothermal energy resources are about 4×1013MW, which is equivalent to 45×104 times the current global energy consumption. Geothermal energy is a clean renewable energy. Geothermal power generation uses medium and high temperature geothermal heat (steam) above the boiling point to directly enter and drive the steam turbine and drive the generator to generate electricity, or uses geothermal heat to heat a certain low-boiling point working fluid through heat exchange, turning it into steam, and then entering and driving the steam turbine to drive the generator to generate electricity. The recently developed "hot dry grinding process method" geothermal power generation method is not restricted by geography and can be used for geothermal mining anywhere. The principle is to first press water into the ground 4 to 6km deep through a pressure pump, where the temperature of the rock layer is about 200℃. After being heated in the high-temperature rock layer, it is extracted to the ground through a pipeline under pressure and input into a heat exchanger. The heat exchanger drives the steam turbine generator to convert geothermal heat into electricity. The hot water that drives the steam turbine is frozen and then re-input into the ground for recycling.

What new energy sources are humans currently developing?

New energy generally refers to renewable energy that is developed and utilized based on new technologies. Currently, humans are developing new energy sources including solar energy, biomass energy, hydropower, wind energy, geothermal energy, wave energy, ocean current energy, tidal energy, and thermal cycles between the ocean surface and deep layers. New energy can form industries, including hydropower, wind energy, biomass energy, solar energy, geothermal energy, etc., which are recyclable clean energy.

What are the three major advantages of hydrogen as a new energy source?

The three major advantages of hydrogen as a new energy source are as follows:

1. Wide sources: Since water contains hydrogen, hydrogen can be obtained by decomposing water, so the raw materials for producing hydrogen are abundant.

2. High combustion calorific value: Hydrogen releases more heat when burned, so the energy utilization rate is higher.

3. The product is pollution-free: Hydrogen generates water after combustion, and there are no other products, which does not pollute the environment.