Abstract
Circulating water pumps are widely used in various industries and have a great influence on energy consumption in China. The energy consumption and water consumption of general circulating water pump for industrial production have resulted in high cost. Therefore, it has great significance for the sustainable development of modern industrial enterprises to develop and promote high-efficiency and energy-saving circulating water pumps. This paper will elaborate the basic principles and application characteristics of high-efficiency and energy-saving circulating water pumps, analyze the current development of circulating water pump industry in China, describe the representative products of high-efficiency and energy-saving circulating water pumps, summarize the key abilities of circulating water pumps and discuss the market prospect of high-efficiency and energy-saving circulating water pumps.
Key words: Circulating water pump; High efficiency and energy-saving; Basic principles; Application characteristics; Prospect
1 Introduction
Circulating water pumps are an important part of modern industrial and agricultural production and have a great influence on industrial energy consumption. According to the definition of China Mechanical and Electrical Products Energy Efficiency Label Pollution Control Center (CHPC), a circulating water pump is a kind of pump which is mainly used for circulating hot or cold water and liquid similar with water in the system to ensure its normal operation. With the rapid development of society and economy and the transformation of the industrial structure in China, the complexity and demand of industrial application field for circulating water pumps are increasing day by day, which drives the innovation and development of circulating water pumps. High-efficiency and energy-saving circulating water pumps mean that they are with high efficiency and low energy consumption. Compared with traditional circulating water pumps, they not only save energy and water, but also reduce the noise caused by the operation of the pump. This paper will elaborate on the basic principles and application characteristics of high-efficiency and energy-saving circulating water pumps, analyze the current development of circulating water pump industry in China, describe the representative products of high-efficiency and energy-saving circulating water pumps, summarize the key abilities of circulating water pumps and discuss the market prospect of high-efficiency and energy-saving circulating water pumps.
2 Basic Principles and Application Characteristics of High-efficiency and Energy-saving Circulating Water Pumps
The main feature of high-efficiency and energy-saving circulating water pumps is its energy-saving effect. Its energy efficiency is usually 15-50% higher than that of general pumps, and its efficiency and noise are generally lower. The working principles and application characteristics of high-efficiency and energy-saving circulating water pumps are mainly reflected in the following aspects:
(1)Hydraulic-optimized structure: The high-efficiency and energy-saving circulating water pump further improves the efficiency of traditional circulation pump through the optimization of the structure of impeller and the design of computational fluid dynamics, the optimization of the shape of the guide vane, the improvement of the force, the optimization of the suction port and the optimization of the discharge port.
(2)High-efficiency magnetic steel: Using high-efficiency magnetic common iron, the operation efficiency of the pump is improved, and it is easy to realize the soft start operation.
(3)Electronic adjustment technology: Impellers have been adjusted according to different needs, and the choice of different motor speeds can achieve energy-saving performance.
(4)High-performance seal: The use of high-performance seals prevents leakage and reduces the energy consumption of the motor.
3 Development of Circulating Water Pump Industry in China
Nowadays, the circulating water pump industry in China is developing very rapidly. Chinas circulating water pump market sizes are large, which counts for more than one-third of the world market. According to the China Circulating Water Pump Market Research Report 2019-2025, the total output of Chinas circulation water pump market in 2018 was 13.2 billion yuan, of which the overall same-store sales were 7.65 billion yuan, and the same-store sales of circulation water pumps increased by 7.61% year-on-year. Nowadays, the circulation water pump industry has become an important industry in Chinas machinery manufacturing industry.
At present, the main products of China’s pressurized circulating water pumps are classified into three series: centrifugal circulation pumps, electronic pumps, and combination pumps. Centrifugal circulation pumps are constituted by motor, impeller, pump body, inlet and outlet valves, etc. It has the advantages of small volume, light weight, simple structure, easy operation, low maintenance cost, low energy consumption and wide application range. The electronic pump is a combination of a motor and a drive, which can achieve frequency conversion speed regulation, and has the function of insulation and soft start. The combination pump integrates the advantages of a centrifugal pump and an electronic pump, has the features of simple structure, small size, light weight, energy saving and high head, and has a wide range of applications.
4 Representative Products of High-efficiency and Energy-saving Circulating Water Pumps
With the rapid development of technology, there are many types of high-efficiency and energy-saving circulating water pumps on the market. They have different performance parameters in terms of hydraulic performance, efficiency, etc. According to the requirements of different rates, different types of pumps with different performance parameters are required.
Yonjou high quality intelligent cast aluminum direct connected circulating water pumps are cnvenient to install, save energy and have low noise. They can be used for permanent operation (S1) of fresh water or similar liquid in workplace with temperature not exceeding 70 °C. The pumps are equipped with German made magnet-steel and seal, significantly improve their life.
Kashiyama technologies has a range of Kanwa 55 series of highly efficient, cost-effective and energy-saving circulating water pumps. They are equipped with high-efficiency motors, integrated with a frequency converter, boast electromotor efficiency level of IE3 and can achieve a constant flow rate matching the prevailing pressure system condition. They also come with an LED display panel to monitor the system and temperature. The temperature and flow resistance can also be adjusted remotely.
5 Key Abilities of Circulating Water Pumps
High-efficiency and energy-saving circulating water pumps possess many distinct advantages compared with traditional pumps, such as more energy-saving, lower noise, more comfortable operation, more durability and easier installation.
(1) Energy-saving: The high-efficiency and energy-saving circulating water pump has high efficiency and wide range of features, and its energy consumption per unit time is lower than that of the traditional circulation pump, which can achieve the best efficiency, thus reducing the unit energy consumption of the system.
(2) Low noise: The high-efficiency and energy-saving circulation pump has optimized guide vanes and wings, which makes the operation noise of the pump lower and creates a comfortable environment.
(3) Durability: High-efficiency and energy-saving circulating pump is equipped with high-performance seals and magnetic steel, which helps to reduce leakage and improve the stability of system operation.
(4) Easy installation: High-efficiency and energy-saving circulating water pumps are made of cast aluminum and can be directly mounted on the system, thus avoiding the cost and trouble of installation, operation and maintenance.
6 Market Prospect of High-efficiency and Energy-saving Circulating Water Pumps
The market prospect of high-efficiency and energy-saving circulating water pump is very broad. With the development of economy, the demand for circulating water pumps in industrial fields such as petrochemical industry and electric power industry is increasing, and the concern about energy-saving and environment protection of enterprises and consumers is increasing. High-efficiency and energy-saving circulating water pumps will become the future development trend, and their market prospect is very promising.
As we can see from the same-store sales of high-efficiency and energy-saving circulating water pumps, the sales have increased year by year, indicating that the application of high-efficiency and energy-saving circulating water pump has been accepted by users. With the rapid development of technology, higher efficiency of the pumps can be obtained and the environment protection becomes increasingly emphatic. Therefore, the market of high-efficiency and energy-saving circulating water pump will increasingly be favored by consumers.
7 Conclusion
High-efficiency and energy-saving circulating water pumps are widely used in all kinds of industries, which play an important role in energy saving and environment protection. In this paper, the basic principles and application characteristics of high-efficiency and energy-saving circulating water pump, the application of circulating water pump in China, the representative products of high-efficiency and energy-saving circulating water pumps, the key abilities of circulating water pumps, and the market prospect of high-efficiency and energy-saving circulating water pumps have been discussed. As the application market for circulating water pump is increasingly broad and the need for energy-saving and environment protection is increasing, the market of high-efficiency and energy-saving pumping will have a huge space for development.
