Question

A solar furnace can be constructed by using a concave mirror to reflect and focus sunlight into a furnace enclosure. What factors in the design of the reflecting mirror would guarantee very high temperatures?

Answer 1

Hint:Solar energy is the radiant light and heat from the Sun that is captured by a variety of ever-evolving technologies including solar heating, photovoltaics, solar thermal energy, solar architecture, molten salt power plants, and artificial photosynthesis. It is an important source of renewable energy, and depending on how it captures and distributes solar energy or converts it to solar power, its technologies are classified as passive or active solar.

Complete answer:
A solar furnace is a device that employs concentrated solar electricity to generate high temperatures, generally for industrial purposes. Light (Insolation) is concentrated into a focal point using parabolic mirrors or heliostats. The temperature at the focus point may reach 3,500 degrees Celsius (6,330 degrees Fahrenheit), and this heat could be utilised to generate power, melt steel, synthesise hydrogen fuel, or create nanomaterials.

Make the mirror a good reflector of light (shiny). Give it a parabolic form to reflect even rays distant from the axis to the picture. Above all, make it big in diameter to capture a lot of solar energy. And if the picture is smaller, like with a shorter focal length, you get a greater temperature; and if the furnace enclosure is an effective absorber, you get a lower temperature (black).

The reflecting surface of a concave mirror, also known as a converging mirror, is sunken inward (away from the incident light). Light is reflected inward by concave mirrors to a single focus point. They're used to concentrate light. Concave mirrors, unlike convex mirrors, produce a variety of images based on the distance between the item and the mirror.

Because they tend to gather light that falls on them, redirecting parallel incoming rays toward a focus, these mirrors are referred to as "converging mirrors." Because the normal to the mirror surface varies at different locations on the mirror, light is reflected at varying angles at different spots.

Note:The idea of the solar furnace is being utilised to create low-cost solar cookers and solar-powered grills, as well as solar water pasteurisation. The enormous amount of solar energy accessible makes it a very enticing source of power. The Earth's land surface, seas (which encompass roughly 71 percent of the planet), and atmosphere absorb solar energy.