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Anonymous users2024-02-15There is always information for this search.
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Anonymous users2024-02-141 Calculation formula: effective surface area of the base tube + all the outer surface area of the exposed part of the fin 2 Calculation method of heat exchange area of the finned tube (taking the steel-aluminum composite type as an example) Original question: A finned tube is 1860mm long, each end is empty 30mm without fins, the diameter of the finned tube is 25mm, the thickness of the bottom diameter, the thickness of the tube is 2mm, the distance between the sheets, the thickness of the sheets, the outer diameter of the fins is 57, the height of the effective sheets, what is the heat exchange area of a finned tube?
Answer: The calculation of heat exchange area, in general, is based on the cumulative addition of all the parts exposed to the air of the hand, which can be divided into three parts: 1, the surface area of the base tube part (the thickness of the piece needs to be deducted) 2, the top of the fin ruler (the surface area after the accumulation of the effective number of pieces) 3, the surface area of the front and back sides of the fin. The sum of these three numbers is the total heat transfer surface of the finned tube.
Example: Calculate according to the original problem (first calculate the area per meter) It is known that the sheet thickness, piece spacing, and the number of effective pieces per unit are 357 pieces, then the effective length of the base pipe surface area is meters, the surface area of the top of the fin is meters, and the outer diameter of the fin is 57mmThe surface area of the front and back sides of the fin is obtained.
is the area of the large circle minus the number of multiplier pieces of the area of the small circle and then multiply by 2, and the known diameters are respectively and, then the radius is and, and the cumulative result is obtained; The effective tube length is 1800, and the heat exchange area of this type of finned tube is a square branch.
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Anonymous users2024-02-13The formula for calculating the heat exchange area of the finned tube is as follows: the effective surface area of the base tube plus the total surface area of the exposed part of the fin.
The calculation of the heat exchange area of the finned tube is the cumulative addition of all the surface areas exposed to the air, which can be divided into three parts:
1. Deduct the surface area of the base pipe part of the sheet thickness.
2. The surface area of the effective number of fins at the top of the fin.
3. The surface area of the front and back sides of the fin.
The sum of these three surface area data is the heat exchange surface cavity of the Hengkong finned tube.
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Anonymous users2024-02-12The heat transfer area of the finned tube is calculated as the effective surface area of the base tube plus the total surface area of the exposed part of the fin.
The calculation of the heat exchange area of the finned tube is the cumulative addition of all the surface areas exposed to the air, which can be divided into three parts:
1. Deduct the surface area of the base pipe part of the sheet thickness.
2. The surface area of the effective number of fins at the top of the fin.
3. The surface area of the front and back sides of the fin.
The sum of these three surface area data is the heat transfer area of the finned tube.
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Anonymous users2024-02-11Heat transfer area of the finned tube = effective surface area of the base tube + total surface area of the exposed part of the fin.
A finned tube is a type of heat exchanger element. In order to improve the heat exchange efficiency, the outer surface area (or inner surface area) of the heat exchange tube is usually increased by adding fins on the surface of the heat exchange tube, so as to achieve the purpose of improving the heat exchange efficiency, such a heat exchange tube.
Spiral finned tubes can be manufactured by a variety of methods, at present, the finned tubes used in boilers, pressure vessels and other heat exchange equipment mainly have the following manufacturing methods: high-frequency resistance welding spiral finned tubes, brazed spiral finned tubes and integral spiral finned tubes. The manufacturing method, performance evaluation index, application and advantages of integral spiral finned tube are introduced in detail.
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Anonymous users2024-02-101 Calculation formula: effective surface area of the base tube + all the outer surface area of the exposed part of the fin 2 Calculation method of heat exchange area of the finned tube (taking the steel-aluminum composite type as an example) Original question: A finned tube is 1860mm long, each end is empty 30mm without fins, the diameter of the finned tube is 25mm, the thickness of the bottom diameter, the thickness of the tube is 2mm, the distance between the sheets, the thickness of the sheets, the outer diameter of the fins is 57, the height of the effective sheets, what is the heat exchange area of a finned tube?
Answer: The calculation of heat exchange area, in general, is based on the cumulative addition of all parts exposed to air, which can be divided into three parts: 1, the surface area of the base tube part (the thickness of the sheet needs to be deducted) 2, the top of the fin (the surface area after the accumulation of the effective number of pieces) 3, and the surface area of the front and back sides of the fin. The sum of these three numbers is the heat transfer area of the finned tube.
Example: Calculate according to the original question (calculate the area per meter first).
It is known that the thickness of the piece, the distance between the pieces, and the number of effective pieces per unit are 357, and the effective length of the surface area of the base pipe is meters.
The surface area of the tip of the fin is meters, and the outer diameter of the fin is 57 mmThe surface area of the front and back sides of the fin is obtained. is the area of the large circle minus the number of multipliers of the area of the small circle and then multiply by 2, and the known diameters are respectively and, then the radius is and, and obtain.
cumulative results; Rice.
The effective tube length is 1800, and the heat exchange area of this type of finned tube is a square branch.
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Anonymous users2024-02-09It seems that there is a software muse in the aspen kit, which is a plate-fin heat exchanger!
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Anonymous users2024-02-08Effective surface area of base tube + total surface area of exposed fins.
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Anonymous users2024-02-07There are two types of areas, one is the base tube area and the other is the area after winging.
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