Air preheater is one of the most important accessories in modern boilers. Air preheater is commonly found in all modern boilers. To increase the efficiency of the boiler accessories like air preheater is used in the boilers.
Types of air preheater in a boiler
The air preheaters are classified into two types based on their features and construction. These two types of air preheater are
Recuperative or Tubular type air preheater
Regenerative or Rotational type air preheater
Recuperative or Tubular type air preheater is further classified into two types, they are
Horizontal tubular type
Vertical tubular type
Regenerative or Rotational type air preheater is also classified into two types they are
Rotating baskets (Ljungstrom)
Rotating hood (Rothemuhle)
Air Preheater In Boiler Diagram,Preheater In Boiler,Function Of Air Preheater In Boiler,Steam Air Preheater Jinan Yuanda Power Equipment Co.,Ltd. , https://www.ydpowerequipment.com
It is reported that in recent years, European automobile manufacturers have also started to demand ceramic brake pads. However, due to the difference in the friction mode between low-metal brake pads and ceramic brake pads, European cars must be equipped with ceramic brake pads to make relevant parts of the car. Big changes. China has its own research and development capabilities Currently, in addition to Japan's two or three brake pad companies, China's mainstream brake pad companies have already possessed independent R&D and production capabilities for high-end ceramic brake pads. The production and research and development of ceramic brake pads is a manifestation of the company's comprehensive capabilities. It cannot afford to buy core technologies, and it can't buy manufacturing processes. The foreign technology is only used for foreign raw materials. If the imported raw materials are used by the purchased technology, the cost of ceramic brake pads will be higher. The use of foreign technical indicators, independent research and development of ceramic brake pads, more suitable for the use of domestic raw materials, while having a certain cost advantage. China's auto brake parts suppliers to the world's current automotive aftermarket, semi-metallic brakes account for a large market share. In the domestic original matching market, most American cars and Japanese cars use ceramic brake pads. Most European cars use low-metal brake pads. Most self-owned brands use semi-metallic brake pads and ceramic brake pads. In addition, the domestic brake pad industry's export value has been increasing year by year, but one unavoidable reality is that a large number of export products are aimed at the low-end market, and the competitive advantage is more reflected in the price aspect. Ceramic brake pads were originally developed by Japanese brake pads companies in the 1990s and gradually became the new darling of the brake pads market. They currently occupy the market share of most original car manufacturers in North America and Japan.
Among the brake pad products currently exported, more than 60% are semi-metal brake pads, and ceramic brake pads account for less than 10% of the total. Experts and industry insiders pointed out that although current domestic brake pad companies have made certain progress in the R&D of various types of brake pads, this progress is only a point of progress, rather than comprehensive, compared to foreign ceramic brake pads. improvement. In recent years, breakthroughs in the development of mid-to-high-end ceramic brake pads by mainstream brake pad companies in China indicate that China's leading brake pads companies have stepped into the mid- to high-end market more steadily. Ceramic brake pads have many advantages, but they are just a new type of friction material and they are not substitutes for conventional brake pads. At present, because more attention is paid to the controllability of automobiles and the higher requirements for brake sensitivity, most European automobile manufacturers including Mercedes-Benz and BMW still use traditional low-metal brake pads.