TH73510B - Helical fins enhance the heat transfer performance of a curved louver. - Google Patents

Abstract

DC60 (06/05/57) Spiral fin increases the heat transfer performance of a curved louver spiral fin. According to this invention is a development of a conventional spiral finned tube heat exchanger. with the addition of grooves Louvers on the fin surface with a special appearance. leading to an increase in the performance of heat transfer in the air or flow of heat exchanger Compared with conventional threaded flanges make the size of the device smaller heat exchange which is suitable for applications with limited space can be used to create heat exchanger By exchanging heat between a fluid and a different fluid such as a gas, a liquid or a two-state fluid between a gas and a liquid, or applied in an exchange device. Heat for heat recovery Spiral fins increase the heat transfer performance of a curved louver spiral fin. According to this invention is a development of a conventional tube-to-finned heat exchanger. with the addition of grooves Louvers on the fin surface with a special appearance. water to increase the heat transfer efficiency of air or flow of heat exchanger Compared to conventional threaded flanges make the size of the device smaller heat exchange which is suitable for applications with limited space can be used to create heat exchanger By exchanging heat between fluids and various fluids such as gas, liquid or gas-liquid two-state fluids, or applied in exchange equipment. Heat for heat recovery

Claims (1)

1. "Spiral fin increases the efficiency of heat transfer. A louver curve consists of a tube (1) in a cylindrical shape that serves to convey the fluid. Or working fluid to exchange heat With diameter distance Of outer tube (b) inner tube diameter (c) and spiral fin (2) are sheet It is enclosed along the entire length of the pipe (1) to increase the heat transfer surface area of the pipe (1) to increase the heat transfer performance. The spiral fin (2) has fin height (a), fin pitch (d) and fin thickness (e) made from selectable materials from steel, copper, brass, aluminum, stainless steel. Or other materials that can be molded A special feature is that the screw (2) is made of the louvers groove (f) to increase the transfer performance. Heat on the fin surface, which is perpendicular to the radius of the fin (g) There is a gap between the flap groove lines (h) and the gap between the flap grooves (i), which are free space, which serves to prevent splitting. Where the slat edge (p) is the length of the louvers (j) and the width of the louvers (k), angle 0, or indicates the vertical plane of the louvers or the edges (p) to promote turbulence of air. A gas or fluid that passes through the fins with an angle of 0 or is in the range 0 to 90 degrees. The flute groove (f) can have the same number of flanges (m) as M (mM) and the number of louvers grooves. (f) is equal to N (fN) corresponding to the height of the fin (a) of the threaded fin (2).