Nils and I wanted to find out how long you need to run at a constant speed to produce enough energy to bake a cake.
We've found out that a human being is able to produce 80 Watt hours, if he trains one hour on the dreadmill.
To bake a cake for 20 minutes the oven needs 950 Watt. So we calculated the number of hours you need to run.
Example: Playstation 4
Assuming a daily playing time of 3 hours, the PS4 consumes 435 watts or 0.435 kWh per day. Extrapolated to a year, this corresponds to a energy of 158,775 kWh. If you multiply the annual consumption by 30 rappen per kWh, the electricity costs amount to about 45 Swiss francs annually.
Petar :D
Hydropower is the usage of water to operate machines or generate electricity. Water is in a constant state of movement through a huge global cycle: it is evaporated [1] from lakes and oceans, it forms clouds, it drops as rain or snow, and then it returns to the sea. The energy of this water cycle, which is powered by the sun, can be drawn on to generate electricity or for such mechanical tasks as the milling of grain [2]. Hydropower uses a source of fuel water [3], that is not reduced or used up in the process. Because the water cycle is an infinite, ever-renewing system, hydropower is classified as renewable energy.
If running water is captured and transformed into electricity, it is referred to as hydropower or hydroelectricity. There are various types of hydropower plants, they are all powered by the kinetic energy of flowing water as it moves downstream. Turbines and generators turn the energy into electricity, which is then fed into the power grid [4] for use in households, companies and industries.
Types of hydropower and dams
There are different kinds of hydroelectric power plants [5], all of these are powered by More...
Wood is one of the oldest used plants and one of the most important plant-product as a resource. It's considered humankind’s very first source of energy. The deforestation was one of the first big intervention of mankind in the ecosystem. Today it is still the most important single source of renewable energy providing about 6% of the global total primary energy supply. More...
"Biomass" is a fancy word for something very simple: stuff that’s found in nature. People have used biomass energy ever since the very first caveman (Höhlenmensch) thought to make a fire out of wood! Today, biomass power plants use everything from animal waste to wood pellets to create electricity. There are lots of advantages to biomass energy, which is a renewable energy source.More...
Run-of-river power plants are built on rivers and use the energy of water flowing down a gradient. In most cases, this is only a few meters, but since several hundred tons of water can flow down per second, run-of-river power stations can have a large capacity of several megawatts (MW). The water flow spins turbines, which converts kinetic rotational energy to electrical energy.1
More...
Definition:
An oil is any non-polar chemical substance that is a viscous liquid at room temperature and is both hydrophobic (does not mix with water, literally "water-shy") and lipophilic (mixes with other oils, literally "fat-loving").
Oils have a high carbon and hydrogen content and are usually flammable and surface active. Most oils are unsaturated lipids that are liquid at room temperature.
Use:
The consumption of oil is still rising. In 2017, it was almost 100 million barrels (159 litres) per day worldwide. For years, road transport has accounted for the largest share of consumption: worldwide, it was 42 percent in 2014, in the EU consumption is even slightly higher. Air transport and maritime shipping also account for more than ten percent. Crude oil is playing an ever smaller role in heating buildings; this is being replaced by electricity or other energy options.
Consume of oil:
Oil has historically been the world's most used energy source. The US has been the biggest oil consumer for the past two decades followed by China, which has been consuming increasingly more oil, especially gasoline. Oil is particularly useful as a fuel because of its high energy density.
Crude oil is processed at petroleum refineries to make many different products, such as motor gasoline, distillate fuel oil, hydrocarbon gas liquids, and jet fuel. More than two-thirds of finished petroleum products consumed in the United States are used in the transportation sector. 33
Wind is the result of the sun's uneven heating of the atmosphere.
Warm air expands and rises, and cool air contracts and sinks.
This movement of the air is called Wind. [1]
Wind turbine [2]
A wind turbine with a rotor blowing wind into energy. The wind causes the rotor to rotate - the "rotational energy" is then converted into electricity with the help of a generator, similar to a bicycle dynamo. From there, the electrical energy goes into the power grid. The height of the wind turbine is very important. The taller the turbine, the more evenly the wind blows and the more electricity can be generated. More...
(Teaser) For Switzerland to become climate neutral, there’s no way around electric mobility. But to get e-​cars going, the public must push for charging stations where people live, argues Anthony Patt.
One of the many changes needed for Switzerland to eliminate greenhouse gas emissions is to make its road mobility electric, with sales on new internal combustion engine (ICE) vehicles to cease by 2030 or soon after. More...
Link to the site (worldometers.info)
There are many sustainable options (in German, heise.de):
Flüssige Luft als Energiespeicher (Liquid air as energy storage)
Fusionsenergie: Der Joker im Energiepoker (Fusion Energy: The Joker in the Energy Poker)
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