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https://www.ovensandhobs.uk/products/aeg-8000-combiquick-built-in-microwave-oven

How is a Microwave Built Microwave ovens have taken household convenience to a completely new level They are designed to fit into wall cabinets or on top of kitchen islands They are constructed of a variety materials The cavity magnetron tube that emits microwaves was first invented in 1940 at Birmingham University in England Percy Spencer realized that this device could be used to heat food when he observed eggs and corn pop cook Raw Materials Microwave MW heating is growing in popularity in the field of material processing because of its inherent advantages like faster heating and uniform heating Its noncontact nature and low energy consumption and faster heating are also advantages MW heating is used for various engineering materials such as ceramics metals and composites Recently it was also modified to bulk metal joins the cladding of metallic powders that are not similar to each other onto metallic substrates and casting Metal is the most important material used in microwave ovens It is extracted from the earth using processes that consume lots of energy and release greenhouse gases Plastic is a second important component and it comes from organic substances like cellulose and crude oils Plastic production generates indirect greenhouse gases through the use fossil fuels for electricity and heat and direct emissions from chemical processes like the production of Bisphenol A and phthalates After the raw materials are acquired they are subjected to an extensive process of manufacturing and quality control to ensure that they meet the strict federal standards In this process a range of emissions and wastes are produced such as solvents oils dust fumes and dust The final product is shipped to retailers and finally to consumers Most microwaves are transported by truck which also requires a significant amount of energy and also produces greenhouse gases When you purchase a microwave it will often be used for a few years before it becomes outdated and taken away Microwaves have a short lifespan so recycling and disposal options are vital to reduce emissions and waste Design Microwave ovens cook food by emitting electromagnetic waves within the microwave region 300 MHz 300 GHz The microwave oven cooks food by passing radiation through it Microwave ovens are made to shield against harmful effects of the radiation including arcing that could damage the oven as well as the food that is cooked inside There are various types of microwave ovens available on the market each having distinct advantages and disadvantages When selecting a microwave oven be sure to consider the size of your kitchen and fit as well as your cooking requirements If youre limited on counter space think about a builtin model that hides the appliance The design of a microwave oven begins with the purchase of raw materials They are then processed into various components This includes the ovens frame and cavity turntable glass tray magnetron tube with transformer and capacitor diode waveguide and electromechanical components motors relays switches and motors over here is typically made of metal such as galvanized steel aluminum or brass The microwave is packaged and tested following assembly The packaging is typically made of recycled materials such as paper and cardboard or recyclable plastics such as acrylonitrile butadiene polyethylene terephthalate polyethylene terephthalate and polyvinyl chloride The new microwave is then loaded onto transport tools such as ships airplanes or automobiles These tools use fossil fuels to transform chemical energy into mechanical energy which is used to move microwaves from their location to the customers After the microwaves are delivered they are plugged into the customers This is the most energyconsuming phase of the life cycle and generates emissions like carbon dioxide Manufacture Microwave ovens are among the most used appliances in modern kitchens They are known for their speed and ease of use but what exactly makes a microwave work To find out lets take a look at the process of making this staple of the home The raw materials needed to build microwave ovens include plastic components metals and other electrical parts They can be sourced from the earth however some require processing to produce them The manufacturing process also requires the use of energy resulting in greenhouse gas emissions This stage of production is the primary cause of the environmental impact of microwaves In the manufacturing phase most of the material is assemble by automated machines A large portion of the assembly occurs in a factory in which workers operate on conveyor belts Workers use a machine to form sheet metal into the door and outer case After the frame has been made it is washed with an alkaline cleaner to remove dirt and oil The frame is then assembled with bolts and screws to make an uninjured chassis Once the chassis is formed after which the magnetron and other components are installed The magnetron emits microwaves which causes water molecules to get hotter During this phase there are security risks such as the possibility that plasticizers will get into the food or the oven may explode if its empty The microwave is then thoroughly tested and inspected after it is assembled to ensure it meets the standards of the federal government After this step the microwave is then packaged to be distributed to consumers The transport of microwaves between factories and retailers can result in a significant environmental burden The equipment used to deliver microwaves are powered by fossil fuels which release greenhouse gases and carbon dioxide into the air Testing Microwaves are electromagnetic waves that form part of the electromagnetic spectrum This spectrum is composed of various forms of energy that traverse space These include visible lights radio waves infrared radiation ultraviolet radiation Microwaves are able to heat food through the process known as microwave heating which uses electromagnetic radiation to cause the water molecules within the food to vibrate and rotate This causes the food to be heated without heating the surrounding air or altering the physical structure of the food Microwaving is a safe way of heating food because the microwave radiation doesnt harm food cells or cause them to become radioactive Microwaves should not be used by those with pacemakers since they can interfere with electrical signals from some electronic cardiac devices Fortunately this issue has been solved through the use of special shielding Bisphenol A BPA as well as Phthalates and other chemicals that are found in microwave ovens can be detrimental to your health BPA has been shown to be absorbed into food through plastic containers and phthalates may be associated with increased risk of reproductive problems Microwave radiation can also harm eye tissues and cause cataracts In todays NOPR tests the procedures require that microwaves be tested in their microwaveonly cooking mode as well as convection microwave cooking modes in order to assess the their energy consumption under representative conditions of use The test method uses water and other basic ingredients to mimic food items that could be reheated using the microwave These mixtures are poured into the borosilicate glass container heated in the microwave oven and then measured for thermal efficiency Packaging A large portion of microwaveready meals utilize a special packaging process known as modified atmosphere packaging MAP This method of packaging uses oxygeneliminating gases to extend the shelf life of prepared foods These gases are typically composed of carbon dioxide or pure nitrogen and oxygen They function by removing air from the foods surrounding This helps prevent food spoilage and prolongs the shelf life of the meal The MAP process is also used to make meat products such as frozen chicken wings frozen steaks or beef patties These packagings contain nonwoven films that absorb moisture and help to keep food fresh and moist for longer This type of packaging minimizes waste as it reduces the quantity of air and water that is lost in the heating process When choosing a microwave consumers should think about its size power level and other features like sensor cooking or defrost options These features can make cooking more efficient but its essential to think about how often these functions will be used in order to avoid spending money on an appliance with additional functions that will be inactive most of the time Another consideration is the style of the microwave Some models have a flushbuiltin design that can fit seamlessly into existing cabinets