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Anubhab2000
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I'm working on a solar heated pump project and require and suitable metal ..that'll absorb as well as radiate heat well. It should should also be cheap to use .
I think you misunderstand his question.billybbob18 said:Copper for sure, but silver would be better, yet far more spendy. Copper is used in heat exchangers everywhere, and is usually used with aluminum fins to reduce cost. I think copper has the highest heat transfer to cost ratio, and can also be purchased as a foil in hardware stores. Copper is easy to work with as well
I was an air conditioning technitian.
oops, my bad.Tazerfish said:I think you misunderstand his question.
I thought it was specifically about radiative heat transfer, as implied by absorb and radiate.
Copper and silver certainly have a high thermal conductivity but like most metals pretty poor radiative properties.
this exerpt came from wikipediaTazerfish said:I think you misunderstand his question.
I thought it was specifically about radiative heat transfer, as implied by absorb and radiate.
Copper and silver certainly have a high thermal conductivity but like most metals pretty poor radiative properties.
Nidum said:Black anodised Aluminium .
I need this metal in large quantity to mould a cylindrical tank for my project.billybbob18 said:this exerpt came from wikipedia
"Metal wire heating elements first appeared in the 1920s. These elements consist of wire made from chromel. Chromel is made from nickel and chrome and it is also known as nichrome. This wire was then coiled into a spiral and wrapped around a ceramic body. When heated to high temperatures it forms a protective layer of https://en.wikipedia.org/w/index.php?title=Chromium-oxide&action=edit&redlink=1 which protects the wire from burning and corrosion, this also causes the element to glow."BAA seems to be cheap and easily purchased online. Shipping might be pricy depending on how much you need.
Using Iron will lead to corrosion..fresh_42 said:What's wrong with iron?
Not with a suitable paint. If you want to paint it black anyway you could use one that prevents it from corrosion.Anubhab2000 said:Using Iron will lead to corrosion..
Good Idea ..But when I create my tank using Iron ..it'll be easy to paint and maintain the non corrosive black painting from outside..but the inner side of the airtight tank can be painted only once and if the non corrosive layer is anyhow removed by water there will be no way to fix it..Rather using aluminium will be much more efficient I think because ..in case of aluminium reacting with water will lead to formation of a Non corrosive layer of aluminium oxide which will stop further corrosion or reactionfresh_42 said:Not with a suitable paint. If you want to paint it black anyway you could use one that prevents it from corrosion.
That does not look like it will work... Where is your pump?Anubhab2000 said:This the the look of my project..and I need a metal to make that tank to absorb heat from sun and radiate it to the air in the tank so that the air expands down the two pipes
I am only guessing about this but maybe he plans to use the temperature differences between day and night, to pump the water.berkeman said:That does not look like it will work... Where is your pump?
The ability of a metal to absorb and radiate heat is determined by several factors, including its thermal conductivity, specific heat capacity, and surface reflectivity. Metals with high thermal conductivity and specific heat capacity are better at absorbing and radiating heat, while those with high surface reflectivity are less efficient at this process.
Generally, copper is considered to have the highest thermal conductivity among common metals. However, aluminum and silver also have high thermal conductivity and are relatively inexpensive, making them good options for absorbing and radiating heat.
Thicker sheets of metal have a higher thermal mass, meaning they can hold more heat. However, thinner sheets of metal have a larger surface area, allowing for more efficient heat transfer. Ultimately, the choice between thin or thick metal will depend on the specific application and desired outcome.
Yes, different metals have varying rates of heat absorption and radiation due to their unique properties. This is why some metals, like copper and aluminum, are commonly used for heat sinks and radiators, while others, like stainless steel, are not as efficient in this process.
Yes, a metal's color can impact its ability to absorb and radiate heat. Darker colored metals, such as black or dark gray, tend to absorb and radiate heat more effectively than lighter colored metals. This is because darker colors absorb more light and convert it into heat energy.