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Solar Cells

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Solar Cells check out the link  MIT As technology continues to evolve , solar cells are becoming increasingly popular . A solar cell is a device that captures and converts sunlight into electricity . It works by absorbing sunlight , which is then converted into direct current electricity . Solar cells are becoming more affordable and efficient , making them an attractive alternative to traditional energy sources . They are also much more environmentally friendly , as they produce no emissions and require no fuel . One of the most common applications of solar cells is in solar panels . These panels are made of many individual solar cells that are wired together . When sunlight hits them , it is converted into electricity that can then be used to power devices or stored in batteries for later use . Another application of solar cells is in solar thermal ener...

Nuclear reactor cooling system

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 Nuclear reactor cooling system 1. Nuclear reactors use water to cool down their core. Water is pumped through the core where it absorbs heat. 2. There are two types of nuclear reactors: Pressurized water reactors (PWR) and boiling water reactors (BWR). PWRs have pressurized water inside the core that keeps the fuel rods at high temperatures. BWRs have boiling water that heats the fuel rods. 3. A nuclear reactor uses uranium-235 as its fuel. Uranium-238 is not fissile and cannot sustain a chain reaction. 4. Reactors need to be cooled after each cycle. Reactors are cooled using either natural convection or forced convection. Natural convection occurs when the water surrounding the core is heated by the hot core. Forced convection occurs when air is blown over the core. 5. In order to keep the core cool, the water is circulated around the core. Circulating water is pumped through the core and then back out again. 6. Reactors are designed to operate at different power levels. At low p...

Window air-conditioner

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  Window air-conditioner Assuming you would like tips for shopping for and using a window air condition er : When the weather outside heats up , many of us turn to our trust y window air condition er to keep our homes cool and comfortable . But with so many different types and features on the market , it can be hard to know which one is right for you . Here are a few tips to help you choose and use the best window air condition er for your needs : - First , consider the size of the room you need to cool . Window air condition ers are sized by the number of BT Us ( British Thermal Units ) they can generate per hour . So the larger the room , the higher the BT U rating you 'll need . - Second , think about the features you want . Some window air condition ers come with remote controls , timers , and energy - saving features . - Third , make...