Aluminum extruded finned tubes, also called [integral finned tubes" using the form of the base tube covered with aluminum tube(the base tube can be carbon steel, stainless steel, copper) through machine extrusion, forming a tube fin, the fin base and the tube outer wall is close fitting, this fin tubing control can make finned tubes with high heat transfer coefficient and heat transfer performance. Extruded Finned Tube can be made of iron, copper or aluminum tube by compound rolling, which has the advantages of tight bonding, small thermal resistance, good heat transfer performance, high strength, small flow loss, strong anti-corrosion performance, not easy to deformation under long-term hot and cold working conditions, long working life and so on. Copper Fin Tube,Copper Fin Tubing,Aluminum Fin Tube,Extruded Steel Tubing Murphy Thermal Energy Co., Ltd. , https://www.murphyfinnedtube.com
At the Monaco Yacht Show, which ended not long ago, MTU Germany introduced a new 4000 series marine diesel engine that has just been upgraded and has lower NOx emissions and higher power. At present, this series of ships has been able to meet the US EPA Tier2 emission standards, and the increased power can cover 1920 ~ 4300 kW.
The new 4000 series of ships introduced a reduction in emissions while reducing the single-cylinder power by 26% - at a speed of 2,100 rpm, the power increased from 170 kW to 215 kW. Based on this calculation, the power of the 12-cylinder machine of the new 4000 series ship covers 2040-2580 kW, the power of 16-cylinder machine covers 2720～3440 kW, and the power of 20-cylinder machine can reach 4300 kW.
The new 4000 Series is equipped with an upgraded common rail system, LEAD injectors, turbocharger system, and the company's newly developed electronic control system, ADEC, which burns fuel to improve efficiency and reduce emissions. Compared with MTU's original 959 series, the new 4000 series can save about 10% of fuel and increase power.