Improve heat transfer efficiency while avoiding excessive fan costs

Calculation results and analysis The physical model is numerically simulated under different headwind wind speed, wind temperature, fin spacing and thickness, heat transfer coefficient of the radiator and pipeline pressure drop, and the variation law of heat transfer characteristics is analyzed, and according to the relevant criteria Optimize the fin pitch and thickness of the heat sink. The analysis of the heat transfer characteristics of the surface of the radiator gives the temperature, velocity and pressure distribution of the center plane between two adjacent fins. At the windward side of the front end of the base pipe, the isotherms are dense and the temperature gradient changes greatly because the air flowing through the fins is a process of constant heating. When the air enters the flow path between the fins from the external large space, the speed suddenly increases, the temperature rises, and the pressure along the path decreases. This is because the existence of the fins makes the flow area smaller and the heat exchange area increases, thereby enhancing the heat exchange. . When air flows from the inter-finted passage into the outer space of the fin, velocity separation occurs at the air-side tail of the fin tube, and a small amount of vortex is generated.

The influence of oncoming wind speed on the heat transfer characteristics of the radiator is the variation law of the airside heat transfer coefficient and flow resistance of the finned tube with the oncoming wind speed. With the increase of oncoming wind speed, the heat transfer coefficient and flow resistance of the air tube of the fin tube increase significantly. When the oncoming wind speed changes from 1.5 to 2.8 m/s, the heat transfer coefficient increases from 22 W/(m) to 42W / (m flow resistance increased from 62Pa to 140Pa. This is due to the same flow area, the greater the oncoming wind speed, the greater the disturbance of the air during the flow, the heat transfer is enhanced, the flow resistance is also In the actual operation of the unit, the increase of the oncoming wind speed will increase the heat transfer efficiency of the radiator, but it will also increase the power consumption of the fan and increase the operating cost of the unit. Therefore, it is necessary to improve the heat transfer efficiency while avoiding Generate excessive fan costs and find the best match between the two.

Automatic Metal Baler

The trends of the Metal recycling industry
More than 5 million metric tons of aluminum are recovered each year. About 2 million metric tons of copper are recycled. Millions of tons more of other various metals are handled by the scrap metal industry as well. There is a lot of value in this metal, which is why it continues to be a strong industry, even in mature markets.

Two-thirds of the metals that the United Nations has identified as being available for recycling have a recovery rate that is below 50%. Although improving these rates would require waste management and infrastructure investments, the improved efficiency rates could offset many of those costs.

What is the role of Metal Baler in Metal recycling?

By baling the products, the volume of metal scrap is greatly reduced, often up to seventy-five per cent.
By reducing the volume in this way, the smelting costs are reduced. In addition, the overall process of recycling and re-casting can be done more quickly.
Automatic Metal balers are economically and environmentally beneficial in reducing metal waste. They lower costs, are space-efficient and make transporting the materials much easier.
The Automatic Metal Baling press makes your metal recycling more efficient and profitable.

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Jiangyin Yimaisheng Hydraulic Machinery Co., Ltd. , https://www.ymsrecycling.com