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Learn about nine new clean and green energies

nine new clean and green energies 2

Clean energy refers to environmentally friendly energy sources, indicating eco-friendliness, minimal emissions, and low pollution levels. However, this concept is not precise enough and can easily lead people to misunderstand it as a classification of energy sources, believing that there is a division between clean and dirty energy sources, thereby misconstruing the true meaning of […]

Choosing the Ideal Motorcycle Battery Voltage: Comparing 48V, 60V, and 72V

Choosing the Ideal Motorcycle Battery Voltage Comparing 48V, 60V, and 72V

Electric motorcycles have surged in popularity due to their inherent advantages. In 2022 alone, sales reached a staggering 45 million, showcasing the widespread adoption of this mode of transportation. Among the prevalent battery voltages—48V, 60V, and 72V—selecting the right one significantly enhances the electric motorcycle experience. Here’s an in-depth comparison:

Ship steam power plant

Ship steam power plant

There are two types of steam power plants: reciprocating steam engines and steam turbines. The reciprocating steam engine was first used in sea-going ships. Because of its simple structure, reliable operation, convenient management and low noise, it occupied a dominant position for a long time in the past. However, due to its poor economy, large […]

Ship energy requirements and ship energy systems

1. Ship energy requirements Ship energy demand is the energy consumption of ship operation, which refers to the fuel consumption of the transport ship during operation, including the energy consumption of sailing, moving, loading and unloading, berthing and other work, but does not include the amount of fuel consumed by the ship for shipwrecks, disaster […]

What are the characteristics of fuel cells?

What are the characteristics of fuel cells?

1. Advantages Fuel cells have attractive features of high efficiency, non-polluting, short construction period, easy maintenance and low cost. (1) Energy conversion is efficient. The fuel cell directly converts the chemical energy of the fuel into electrical energy, which is not limited by the Carnot cycle. The current fuel-electrical energy conversion efficiency of the fuel […]

Phosphoric acid fuel cells

Phosphoric acid fuel cells

Phosphoric Acid Fuel Cell (PAFC) uses phosphoric acid as electrolyte, oxygen as oxidant, hydrogen-rich gas (such as natural gas reformed gas) as fuel, and platinum alloy as catalyst at both anode and cathode. The electrochemical reaction takes place on the surface of catalyst particles supported by carbon black, and the working temperature is around 200°C. […]

Solid oxide fuel cells and molten carbonate fuel cells

Solid oxide fuel cells and molten carbonate fuel cells

Solid oxide fuel cell Solid Oxide Fuel Cell (SOFC) is an all-solid-state chemical power generation device that directly converts chemical energy stored in fuel and oxidant into electrical energy with high efficiency at high temperature. Solid yttrium oxide and zirconium oxide electrolytes have strong ion conduction function at high temperature, can conduct O2–, and play […]

Proton exchange membrane fuel cell and direct methanol fuel cell

Proton exchange membrane fuel cell and direct methanol fuel cell

Proton exchange membrane fuel cell Proton Exchange Membrane Fuel Cell (PEMFC) uses perfluorosulfonic acid solid polymer as electrolyte, platinum/carbon or platinum nail/carbon as electrocatalyst, hydrogen or purified reformate gas as fuel, air or pure oxygen as oxidant, and graphite or surface-modified metal plate with gas flow channel as bipolar plate. The solid polymer material is the electrolyte. […]

Classification of fuel cells and introduction to alkaline fuel cells

Classification of fuel cells and introduction to alkaline fuel cells

1. Classification of fuel cells The types of fuel cells can be roughly classified as follows according to different methods: (1) According to the operating mechanism of fuel cells, there are mainly acidic fuel cells and alkaline fuel cells. (2) According to the type of electrolyte, there are mainly alkaline fuel cells, phosphoric acid fuel cells, molten […]

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