Finned Tube----Finned radiator
Brief introduction
Finned tube radiator is kind of gas and liquid heat exchanger, which the most widely used as a heat transfer equipment. It is through the installation of fins on a common base tube to achieve enhanced heat transfer purposes . You can use the steel base pipe ; stainless steel tube ; brass and so on. Fins can also use steel ; stainless steel, copper , aluminum and so on.
Structure
Finned heat sink fin structure can be divided into chip form around ; serial chip ; lug ; rolling piece .
Is currently the most widely used steel-aluminum finned tubes , which uses high- pressure resistance and thermal conductivity of aluminum, steel , and composite made on a dedicated machine . Its contact resistance at 210 ℃ under working conditions of almost zero.
Steel and aluminum composite pipe with other types of finned tube radiator irreplaceable advantages .
Optional requirements
1 . Thermal performance requirements finned radiator heat transfer coefficient K higher the value, the better the description of its thermal performance . Improving heat dissipation of the radiator, increasing the heat transfer coefficient of the finned heat sink method, improved by increasing the area of the outer wall of the cooling air flow around the radiator fins and increasing the speed of the radiator radiating intensity means.
2 . Economic requirements, finned radiator is a unit of heat required to pass the room less metal consumption , lower cost , and its economy , the better. Finned heat sink metal heat intensity is a measure of a sign radiator economic. Metal heat radiator heat medium intensity refers to the average temperature of the indoor air temperature difference of 1 ℃ time . Per kilogram mass radiator unit time shed heat. This indicator can be used as a measure of the same material radiator economic. On a variety of different materials finned radiator , its economic evaluation criteria should amount to a radiator cooling unit cost ( RMB / w) to measure.
3 . Installation and process requirements finned radiator should have a certain mechanical strength and bearing capacity ; structure should be easy to mix into the required cooling area, the structure size to small, accounting for less room size and space , cooling fins control of the production process should meet the requirements of mass production .
4 . Health and aesthetic requirements , smooth appearance , not fouling and easy to clean , finned radiator installation should not affect the perception of the room .
5. Life demands , finned radiator corrosion and should not be easily broken , long service life .