Nano Spray

first I had to go look up nanospray, because I've never heard of it.

and of course I don't know, but thermal conductivity has more to do with the material chosen, and metals are best as far as I know. What do you think nano layer thickness will add that pure metal wont already have?

I do think you could use it as a lubricant, similar to graphite.

Chris

Presumably you want to increase the air side heat transfer coefficient. This is quite low and has to tdo with the properties of the gas flowing, its velocity and such. The metal itself is orders of magnitude higher in conductivity. All that you have to ensure is that there is no dust build up and caking of the space between fins. If the coating is dust repellent there may be some merit to the idea. Otherwise not much may be gained.

Thermal conductivity is a measure of the substance to conduct heat, Boss. Nothing changes if paint, or anything else for that matter, is added to the surface of the object.

If you're talking about the ability of the condenser to transfer heat instead, then you need to look at the roughness of the surface and the level of turbulence in the passing fluid. Oh yes, the thermal conductivity of the substrate has an influence on heat transfer, but it isn't affected by the coating.

Thermal conductivity is a measure of the property of the substance, and not a measure of the effectiveness of the system it finds itself in.

So the question is; will increasing the surface area of the radiating surface by adding a layer of nanopraticles help with heat transfer?

Anybody done this before?

Colour can have an effect on how much heat that fins radiate. The standard colour for electrical transformers in West Australia is silver. When the company that I work for asked for light blue transformers, extra cooling fins were added to counter the reduction in ability to transfer heat.

yes you can improve thermal conduction using Nano spray as long as system is well defined.

Heat is transmitted using grain and grain boundry. If your selection is grain bondry as dominent path for heat transfer then you can increase multiple fold by going to Nanoparticulate sprey. The heat transfer capacity increase again few fold when you have gougher Nano surface.

I will not be able to tell you name and process since it is entire system and not only the material which will deliver this but I can explain you on personnel email without boring every one on this planet

Dear Sir,

Your explanation would be highly appreciated.... My email ID keyur197@gmail.com . Awaiting for the your email.

Regards,

Keyur

spray can increase the loss of heat by radiation.

For conductivity increase one has to change the material of fins.

heat dissipation rate can be increased by changing the velocity of the fluid and density of the fluid.

kiran nawathe