Highly Efficient G-Type Finned Tubes
G-type finned tubes require pre-fabrication. First, a spiral groove with specified width and depth is machined. The aluminum strip is then embedded into the steel tube surface using this machine.
During the winding process, a preload is generated, and the steel strip is securely wrapped around the spiral groove, ensuring the required contact surface between the tube and the strip. Springback and stripping are issues that need to be prevented later. The ends of the strip can be welded directly to the tube surface.
To ensure optimal embedding of G-type finned tubes, a side clearance should be left between the spiral groove and the strip. Too little clearance will result in interference fit, making embedding difficult. If the strip experiences significant springback after wrapping, the bottom of the spiral groove and the strip will not fit together.
G-type finned tubes can be used in general-purpose equipment, reducing costs and process complexity without sacrificing efficiency.
G-type finned tubes are also used in water heating.
They primarily utilize heated circulating water through special pipes to connect radiators. The radiators then output the circulating water at the appropriate temperature, creating a certain temperature difference in the room. The heat circulation then raises the temperature to a uniform level, resulting in a more even temperature rise.
G-type finned tubes are widely used in modern residential heating. Due to their unique performance, they are being adopted by a wider range of customers. Traditional cast iron radiators have largely been phased out of the market, while steel and copper-aluminum composite radiators are very common. Both the material selection and manufacturing process are of exceptional quality, and they have gradually taken over the mainstream market share for G-type finned tubes.
When convection occurs between the water vapor in a G-type finned tube and the radiator, heat is directly transferred to the radiator. After the radiator conducts heat through its own heat conduction, the heat must first be transferred from the inner wall to the outer wall. Therefore, convection transfer on the outer wall does not require much in the way of thermal space.
If radiation is used, if the heated space is already saturated, it will take time for the entire room temperature to rise. This is also a challenge for G-type finned tubes.
The classification of radiators on the market is complex. Most customers focus on the performance and structural features of the equipment, while consumers consider the overall environment of the community, including the heating effect. G-type finned tubes are not only aesthetically pleasing but also offer higher heat dissipation efficiency.
Precautions for Replacing G-type Finned Tubes
G-type finned tubes are relatively new in the industry. They directly transfer part of the heat contained in the hot fluid to the cold fluid, and therefore have a wide range of applications. They are frequently used in daily production in industries such as petroleum, food, chemicals, and power equipment.
G-type fin tubes are structurally unique and complex to use, often requiring disassembly and installation. Due to their unique characteristics, there are many precautions to take when disassembling them, and numerous inspections are required when replacing them.
1. Before disassembling a G-type fin tube, measure the length of the compressed plate bundle and keep a record. The next time you install it, ensure you select components based on these dimensions.
Inspect the sealing gasket. If it is stuck between the grooves, use a small screwdriver to separate it. Insert the screwdriver from a position where it is easier to remove. Be extremely careful not to damage the gasket, as this will affect the sealing performance.
2. Inspect the G-type fin tube for perforations. Use a magnifying glass or light to inspect.
If foreign matter is found between the inlet and outlet short tubes and the channel during inspection, the surface filter has essentially lost its effectiveness and must be cleaned immediately. Common cleaning methods include chemical cleaning and manual cleaning.
3. If the heat exchange plates in G-type finned tubes are scabby, do not use a wire brush to remove them, as this will reduce the plates’ corrosion resistance. If stains and rust are more noticeable, use a special detergent powder to scrub them. The cleaning water must not contain corrosive substances such as sulfur, acids, and salts.
Inspect the G-type finned tube plates locally to see if they are deformed. If deformation exceeds the permitted range, they must be replaced.
4. The sealing gasket plays a crucial role in the G-type finned tube plates. The grooves must be free of fixed particles, such as iron slag and sand.
Titanium plates should not be exposed to open flames during disassembly to prevent oxidation. The finned tube surface should also be kept clean and scratch-free.