TH93448A - Corrugated Heat Transfer Tube for Hot Water - Google Patents

Abstract

DC60 (23/11/54) This invention involves a corrugated heat transfer tube of hot water exchanging. Heat between inside and outside of the pipe A number of overhangs where the height of each overhang (H1) ranges from 0.5 mm to 1.5 mm will be provided, in a minimum. One of the internal surfaces of a given section is positioned in the corrugated heat transfer tube section. Where the Reynold (Re) number of the fluid flowing inside the pipe is less than 7,000, the protrusion H1 height ranges from 0.05 to 0.15 times the inner diameter D, or the height H1 of the overhang. In the range 1 to 3 times the depth (Hm) of the corrugated groove Hence, with a simple structure, heat transfer performance is improved in areas with low Reynolds numbers and loss of heat. The pressure inside the pipe will be less. This invention involves a corrugated heat transfer tube of water that is exchanging. Heat between inside and outside of the pipe A number of overhangs where the height of each overhang (H1) ranges from 0.5 mm to 1.5 mm will be provided, in a minimum. One of the internal surfaces of a given section is positioned in the corrugated heat transfer tube section. Where the Reynold (Re) number of the fluid flowing inside the pipe is less than 7,000, the protrusion H1 height ranges from 0.05 to 0.15 times the inner diameter D, or the height H1 of the overhang. In the range 1 to 3 times the depth (Hm) of the corrugated groove Hence, with a simple structure, heat transfer performance is improved in areas with low Reynolds numbers and loss of heat. The pressure inside the pipe will be less.

Claims (9)

Disclaimers (all) that will not appear on the advertisement page: 1.Shaped hot water corrugated heat transfer tubes for exchanger Heated between inside and outside of the pipe, where: a spiral corrugated groove is provided inside the pipe; A number of individual protrusions, where their height (H1) will be 0.5 to 1.5 mm, is provided in at least part of the internal surface of the part to be positioned in Section where the Reynold (Re) number of the fluid flowing inside is less than 7,000: A second heat transfer tube that has been shaped to flow the second fluid to be exchanged. The heat with the fluid is arranged in the exterior of the corrugated heat transfer pipe of hot water; The second heat transfer pipe is in contact with the external surface of the corrugated heat transfer pipe of hot water; And many protrusions are formed on the internal surface by the lowering of the external surface, and are formed at the outer location of the part to be in contact with the second heat transfer pipe. 2. The hot water corrugated heat transfer tubes are shaped for heat exchange. Between inside and outside of it, where; A spiral corrugated groove is provided inside the pipe; A number of protrusions, each where their height (H1) will be 0.05 to 0.15 times the diameter. The inner center (D) is provided in at least part of the internal surface of the affected part. Determine the position in which the Reynold number (Re) of the fluid flowing inside is less than 7,000; The second heat transfer tube has been shaped to flow a second fluid that will exchange heat. Heating with fluid is arranged in the exterior of a corrugated heat transfer pipe of hot water; The second heat transfer pipe is in contact with the external surface of the corrugated heat transfer pipe of hot water; And many protrusions are formed on the internal surface by the lowering of the external surface; And is formed at the location outside of the part that will come into contact with the second heat transfer pipe. 3.Corrugated heat transfer tubes of hot water that have been shaped for heat exchange. Between inside and outside of it, where: a spiral corrugated groove is provided inside the pipe; A number of protrusions, each where their height (H1) will be 1 to 3 times the depth (Hm) of the corrugated groove, is provided at least part of the internal surface of the section. Determine where the Reynold number (Re) of the fluid flowing in the interior is less than 7,000; A second heat transfer tube that is shaped to flow the second fluid to be heat exchanger. With the fluid, it is arranged on the outside of the corrugated heat transfer pipe of hot water; The second heat transfer pipe is in contact with the external surface of the corrugated heat transfer pipe of hot water; And many protrusions are formed on the internal surface by the lowering of the external surface, and are formed at the outer location of the part to be in contact with the second heat transfer pipe. 4.Corrugated heat transfer tubes of hot water that are shaped for heat exchange. Between its inside and outside, where: a helical corrugated groove is provided inside the pipe; A number of protrusions are prepared in at least part of the internal surface of the section. Where is the position where the Reynold number (Re) of the inner flowing fluid is less than 7,000; The pitch (Pl) value of a number of protrusions is different from that of the pitch (Pm) of the corrugated groove; A second heat transfer tube that is shaped to distribute the second fluid to be exchanged. Heating with fluid is arranged on the outside of the corrugated heat transfer tube of hot water; The second heat transfer pipe is in contact with the external surface of the corrugated heat transfer pipe of hot water; And many protrusions are formed on the internal surface by the lowering of the external surface, and are formed at the outer location of the part to be in contact with the second heat transfer pipe. 5.Corrugated heat transfer tubes of hot water used in the heat exchanger of the machine. Heated with hot water and shaped to exchange heat between its interior and exterior, where; A helical corrugated groove is provided inside the pipe; A number of protrusions, each where their height (H1) would be 0.5 mm to 1.5 mm, are provided on the internal surface of the positioned portion near the inlet where the water, where is The fluid flowing inside, will flow into the second heat transfer tube that is shaped to flow the second fluid to be exchanged. Heating with fluid is arranged on the outside of the corrugated heat transfer tube of hot water; The second heat transfer pipe is in contact with the external surface of the corrugated heat transfer pipe of hot water; And many protrusions are formed on the internal surface by the lowering of the external surface, and are formed at the lower end of the part to be in contact with the heat transfer pipe. two 6. Corrugated heat transfer tubes of hot water being used in the heat exchanger of The heaters are heated and shaped to exchange heat between their inside and outside, where: a helical corrugated groove is provided inside the pipe; A number of protrusions, each welded to their height (H1), to be 0.05 to 0.15 times the inner diameter (D), are provided on the internal surface of the positioned portion in the region. Near the inlet of the fluid where water, where the inward fluid flows, will flow in; The second heat transfer tube is shaped to flow a second fluid to be exchanged. Heating with fluid is arranged on the outside of the corrugated heat transfer tube of hot water; The second heat transfer pipe is in contact with the external surface of the corrugated heat transfer pipe of hot water; And many protrusions are formed on the internal surface by the lowering of the external surface, and are formed at the outer location of the part to be in contact with the second heat transfer pipe. 7. Corrugated heat transfer tubes of hot water being used in the heat exchanger of The heaters are heated and shaped to exchange heat between their inside and outside, where: a helical corrugated groove is provided inside the pipe; A number of protrusions, each where their height (H1) will be 1 to 3 times the depth (Hm) of the corrugated groove, is provided on the internal surface of the positioned portion in the region. Near the inlet of the fluid where water, where the inward fluid flows, will flow in; A second heat transfer tube that is shaped to flow a second fluid to be exchanged. Heating with fluid is arranged on the outside of the corrugated heat transfer tube of hot water; The second heat transfer pipe is in contact with the external surface of the corrugated heat transfer pipe of hot water; And many protrusions are formed on the internal surface by the lowering of the external surface, and are formed at the outer location of the part to be in contact with the second heat transfer pipe. 8.Corrugated heat transfer tubes of hot water being used in the heat exchanger of The heaters are heated and shaped to exchange heat between their inside and outside, where: a helical corrugated groove is provided inside the pipe; A number of protrusions are prepared on the internal surface of the locating portion. Near the inlet of a fluid that repeats water, where a fluid flows inward, flows into it; The pitch (Pl) value of a number of protrusions is different from that of the pitch (Pm) of the corrugated groove; The second heat transfer tube is shaped to the second flow to be heat exchanger. With the fluid, it is arranged on the outside of the corrugated heat transfer pipe of hot water; The second heat transfer pipe is in contact with the external surface of the corrugated heat transfer pipe of hot water; And many protrusions are formed on the internal surface by the lowering of the external surface, and are formed at the outer location of the part to be in contact with the second heat transfer pipe. 9.Corrugated heat transfer tubing of hot water according to one of the claims 1 to 8, where the fluid flow velocity inside will be 0.1 to 0.6 m / s. 1 0. Corrugated heat transfer tubing of hot water according to one of the claims 1 to 8, where the cross-sectional shape at the selected height of each of the number of protrusions. Much will be A smooth arc like a circle, an ellipse, or roughly 1 circle. 1. Hot water corrugated heat transfer tubing in accordance with one of the claims 1 to 8, where the uncontaminated flat section with a large number of protrusions is formed. In the surface In the part to be positioned near the fluid outlet where the fluid will flow out 1 2. Corrugated heat transfer tubing of hot water according to one of the claims 1 to 8, where the grooves are shallower than the height (H1) of each section of the section. Many protrusions will be formed. Formed on the internal surface 1 3.Corrugated heat transfer tubing of hot water according to one of the claims 1 to 8, where a number of protrusions are provided parallel to the axial direction of pipe 1. 4.Corrugated heat transfer tubing of hot water according to one of the claims 1 to 8, where a number of protrusions are arranged in a spiral 1. 5. Hot water corrugated heat transfer tubing according to one of the claims 1 to 8, where a number of protrusions are provided so that the protrusions are made to be A pair at a straight position Cross each other in the radial direction 1 6. Corrugated heat transfer tubing of hot water according to one of the claims 1 to 8, where the ratio of the pitch (Pl) of a number of protrusions to its inner diameter. (D) would be 0.5 to 10 1. 7. Corrugated heat transfer tubing of hot water according to one of the claims 1 to 8, where each small protrusion where its height (H2) is less. Over 0.5 mm is prepared between a number of protrusions 1. 8.Hot water corrugated heat transfer tubing pursuant to one of the claims 1 to 8, where the uncontaminated flat portion with numerous protrusions will be on the floor. Inner surface 1 9.Corrugated heat transfer tubing of hot water according to one of the claims 1 to 8, where multiple protrusions are formed by exerting force from the outside, Many protrusions will It is formed in a straight line, and many protrusions are not formed in the bend part 2. 0. Hot water corrugated heat transfer tubing pursuant to one of the claims 1 to 8, where multiple protrusions are formed by exerting force from the outside, And number protrusions It is not formed on the part to be cut with the bent surface in the bent part.