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Combined heat and power (CHP) and micro-CHP systems are a great option for businesses looking for a reliable source of energy at a low cost. To learn more about CHP and how it can benefit your business, visit pgworks.com.
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As the U.S. attempts to shift away from fossil fuels, renewable energy resources bring waste problems of their own. Recycling or disposing of wind turbine blades and solar panels can be tricky, and many often just end up in land fills. Ben Tracy reports.

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This video introduces and explains efficiency for A Level Physics.

The efficiency (η) of an object, device or machine is the ratio between the useful energy out and the total energy in or the ratio between the useful power out and the total power in. The efficiency equation is: efficiency = useful energy out/total energy in = useful power out/total power in.

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This video is recommended for anyone studying A Level Physics in the following exam boards:
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Doodle Science teaches you high school physics in a less boring way in almost no time!

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Different types of energy can be transferred from one type to another. You can see that a car engine transfers chemical energy, which is stored in the fuel, into kinetic energy in the engine and wheels so it can get you from A to B. In a lamp the electrical input is converted into light energy. However not all the energy put in is turned into useful energy, some of it is turned into energy we don’t need such as heat.

Sankey diagrams summarise all the energy transfers taking place in a process. The thicker the arrow, the greater the amount of energy involved. This Sankey diagram for an electric lamp shows that most of the electrical energy is transferred as heat rather than light. This means it’s very inefficient. We can calculate efficiency using this simple formula, useful energy, in this case 10J divided by the total energy input, which is 100J, which gives us an efficiency of 0.1 or 10% if you times it by 100.

Apple has launched four new iPhone models: the iPhone 14 and 14 Plus, along with the iPhone 14 Pro and 14 Pro Max. The 14 Pro models feature the new Apple A16 Bionic, Apple’s latest mobile SoC. The emphasis for this latest generation of mobile processor is power efficiency.

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Big batteries are perhaps the key to making a completely renewably powered grid possible. Luckily there are already some massive ones paving the way. This week Imogen visited Europe’s largest battery energy storage system, Pillswood in Hull to find out how Harmony Energy is getting as much clean energy from Dogger Bank, the world’s biggest wind farm, onshore and into our homes. But these are no ordinary batteries, at 200 MWh these Tesla Megapacks are decked out with Artificial Intelligence, these are working to make the grid both renewable and flexible.

00:00 Massive Megapacks
00:36 Intermittency of Renewable Energy
01:28 Largest Storage in Europe
01:53 Charging and Discharging
03:19 How do you build it?!
04:33 Artificial Intelligence
05:26 Managing the Grid
06:12 100% Clean Energy System
06:52 The Future of Energy?!

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Pumped-storage hydropower from Norwegian water reservoirs can secure Europe’s power supply in the future. A regulated power reserve is required when the wind isn’t blowing and wind turbines aren’t producing energy. Read more here: http://statkraft.com/energy-sources/hydropower/pumped-storage-hydropower/
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7 Types Of Renewable Energy

Solar

Solar energy is derived by capturing radiant energy from sunlight and converting it into heat, electricity, or hot water.

With the technology to harvest it, there is a limitless supply of solar energy, meaning it could render fossil fuels obsolete.

Wind

Wind farms capture the energy of wind flow by using turbines and converting it into electricity.

Wind energy is a clean energy source, which means that it doesn’t pollute the air like other forms of energy.

Wind energy doesn’t produce carbon dioxide, or release any harmful products that can cause environmental degradation or negatively affect human health like smog, acid rain, or other heat-trapping gases.

Hydroelectric

Water flows through the dam’s turbines to produce electricity, known as pumped-storage hydropower.

Hydroelectric power is very versatile and can be generated using both large scale projects, like the Hoover Dam, and small scale projects like underwater turbines and lower dams on small rivers and streams.

Geothermal

Geothermal heat is heat that is trapped beneath the earth’s crust from the formation of the Earth 4.5 billion years ago and from radioactive decay.

Geothermal energy is not as common as other types of renewable energy sources, but it has a significant potential for energy supply.

Geothermal energy is naturally replenished and therefore does not run a risk of depleting (on a human timescale).

Ocean

The ocean can produce two types of energy: thermal and mechanical.

Ocean thermal energy relies on warm water surface temperatures to generate energy through a variety of different systems.

Ocean mechanical energy uses the ebbs and flows of the tides to generate energy, which is created by the earth’s rotation and gravity from the moon.

Unlike other forms of renewable energy, wave energy is predictable and it’s easy to estimate the amount of energy that will be produced.

This type of renewable energy is also abundant, the most populated cities tend to be near oceans and harbors, making it easier to harness this energy for the local population.

Hydrogen

Hydrogen needs to be combined with other elements, such as oxygen to make water as it does not occur naturally as a gas on its own.

When hydrogen is separated from another element it can be used for both fuel and electricity.

Hydrogen can be used as a clean burning fuel, which leads to less pollution and a cleaner environment.

It can also be used for fuel cells which are similar to batteries and can be used for powering an electric motor.

Biomass

Bioenergy is a renewable energy derived from biomass.

Biomass is organic matter that comes from recently living plants and organisms.

The use of biomass in energy production creates carbon dioxide that is put into the air, but the regeneration of plants consumes the same amount of carbon dioxide, which is said to create a balanced atmosphere.

Biomass can be used in a number of different ways in our daily lives, not only for personal use, but businesses as well.

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Source:
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