Energy Engineering

Energy Engineering

Energy Engineering

Energy engineering is a field that deals with the production, storage, and use of energy. This field includes developing efficient systems for generating energy from natural sources such as solar, wind, and geothermal energy. It also consists of designing and operating power plants to produce electricity. Energy engineering has become very important in recent years due to the increasing demand for energy and environmental concerns related to it. The need for efficient and sustainable energy production has led to a greater focus on renewable energy sources and improving the methods of using existing natural resources.

Energy engineers are responsible for developing new technologies to reduce greenhouse gas emissions while increasing efficiency in energy production. In addition, they play a key role in helping countries achieve their climate change goals by developing strategies to reduce greenhouse gas emissions.

Renewable energies such as the sun, wind, geothermal, and hydropower have a higher priority for us than fossil fuels due to their ability to produce clean and renewable energy at a lower cost because the consumption of fossil fuels, in addition to the high cost of extraction and They are exploiting and producing more pollution that causes the earth’s temperature to rise, as a result of which the ice in the poles melts and can create many dangers for the lives of humans and animals.

Renewable_Energy

Another disadvantage of fossil fuels is their limited resources. Ultimately, fossil fuel resources will run out sooner or later, so we must replace them with suitable sources before it is too late. Therefore, most countries have distanced themselves from traditional and non-renewable sources such as oil and its products, and renewable energy engineering has become more important.

With the help of renewable energy engineering, we can create more sustainable and cleaner ways to produce the energy needed by human societies. That helps us reduce our dependence on fossil fuels and keep our environment hygienic and healthier.

Application of CFD in energy engineering

Computational fluid dynamics (CFD) is a crucial tool for understanding the behavior of fluids in a wide range of engineering applications. CFD has become an essential tool for renewable energy engineering, as it can be used to predict the performance of renewable energy systems (such as turbines) and optimize their design.

CFD simulations allow engineers to analyze the flow of air or water around turbines, solar panels, and other components of renewable energy systems. Also, with the expansion of CFD methods, solar cells and the radiation irradiated on them from the sun can also be simulated in addition to fluid flow. These simulations help engineers identify designs that can be used to increase efficiency and reduce costs.

Renewable_Energy_CFD

WIND TURBINES

Wind turbines are one of the most widely used equipments for using wind energy and converting it into electrical energy. Wind energy is one of the cheapest and most available renewable energies. Therefore, this issue made engineers think about creating a system to use this energy. Wind turbines usually have three blades, these blades are designed to rotate when the wind hits them, and the central axis of the turbine is set in motion, and electric power is provided by it. Wind turbines are usually installed in high numbers in an area of the sea or plains called wind turbine farms.

These turbines are built at high altitudes to use the wind’s maximum speed and power. Due to the effects of the boundary layer near the earth’s surface, the higher we rise above the ground, the higher the wind speed. Wind turbines are divided into several categories, the most famous of which are horizontal axis turbines (HAWT), Savonius Turbines, Darrieus Turbines, Giromill Turbines, etc.

windfarms

By using CFD, we can study and check wind turbines and design more optimal designs for turbine blades without conducting expensive tests.

SOLAR CELLS

Another renewable energy that is easy and cheap to access is solar energy. Solar energy is readily available in all parts of the world. Every second, a large amount of energy emitted from the sun reaches the earth’s surface by radiation, most of which is reflected and leaves the ground. Therefore, building a system that can use this energy is very important for us. Solar cells are made for this purpose.

Solar cells receive the sun’s heat energy and convert it directly into electricity. Solar cells, like wind turbines, are usually installed in high numbers, called solar farms. The electricity produced by solar cells can be stored in batteries. The energy supplied in these cells alone is sufficient for small appliances, although it is possible to produce and store more energy in large solar farms.

solar farms

CFD can be used to simulate solar cells. Radiation models in Fluent software have been developed for this purpose. With this, solar cells can be studied and analyzed in different arrangements and with varying radiation angles. Which ultimately leads to the optimal design of solar farms.

WATER TURBINES

Another renewable energy available to humans is water energy. This energy is available in two types of gravitational and kinetic potential in nature. To use this energy, water turbines have been built. Water turbines, just like wind turbines, convert the mechanical energy caused by the impact of the fluid into rotational energy. The rotational energy is converted into electrical energy in the generators. Humans have been using water energy in rivers and waterfalls since ancient times by building water mills in the path of water flow.

Even today, large dams are built along the rivers for this purpose. Inside the dams, water turbines are moved by the gravitational potential energy of the fluid behind the dam and produce electric power. With the help of CFD, the performance of these systems can be evaluated, and better turbines with higher efficiency can be designed.

dam

Also, a harmful phenomenon that threatens water turbines is the phenomenon of cavitation. The phenomenon of cavitation occurs when, due to the speed of the fluid on the turbine blades, its pressure decreases; due to this decrease in pressure, a phase change occurs in the fluid, and water vaporizes. In this phenomenon, hundreds of bubbles are formed every second. When these bubbles hit the blades, it is possible that corrosion occurs on the turbine blade’s surface. This action reduces the useful life of turbine blades.

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