The basic working principle of central air conditioning compressor forcing the refrigerant for refrigeration cycle, the heat in the building through the refrigerant (usually water) is transferred to the refrigerant through the cooling tower and then transfer the heat to the atmosphere, in which circulating water Cooling pump and refrigeration pump consume about 60% of the total energy consumption. Air conditioning equipment are designed according to the maximum cooling capacity to consider. Most of the time in low-load conditions work. So using the drive to drive will save a lot of energy. The working principle of the pump shows that the flow of the pump is proportional to the rotational speed of the pump (motor). The lift of the pump is proportional to the square of the rotational speed of the pump (motor). The shaft power of the pump is equal to the product of the flow and the lift. Power and the pump speed (motor speed) is proportional to the third power. For example, the frequency of power supply is reduced from 50Hz to 40Hz P40 / P50 = 403/503 = 0.512, that is, P40 = 0.512P50 Energy savings of about 40% of the original In Tian'an Industrial Zone, Shenzhen, a building air-conditioning system, there are five 18.5kw cooling water pump, the water flow is to use the valve to regulate the building in October 98 bought five 18.5kw Ampang letter G5 Of the inverter, the cooling water pump for technological transformation. The cooling system of energy-saving cooling system at the beginning of the installation, consider the pump speed and lift the square is proportional to the relationship between the pump speed and loss proportional to the square: in the pump head with the speed down at the same time, the pipeline Losses are also reduced: By setting the lower frequency limit of the frequency converter, the system can also guarantee the minimum pump head demand. The system is stable. Anti-interference ability, smooth soft-start function, no impact on the power supply and machinery, energy efficient, saving 40% of the average, fast return on investment, protection and perfect, remote control, easy operation, easy installation Frequency Frequency Dual-loop control can be automatically switched, safe operation is guaranteed, low noise, environmental effects and other significant. Inverter in plastic machinery on the application In the production of plastic products, due to the characteristics of plastic, product specifications and production processes require a variety of different. Therefore, many places need to speed up the production machinery, such as extrusion machine, foaming machine, blown film machine, printing, compounding and other machinery, most of the domestic speed control is the use of DC speed control, speed Motor (slip motor) speed of these two methods, DC speed control of the high cost, and the need for frequent maintenance of the DC motor, the higher the cost of maintenance, speed motor although the low cost, easy maintenance, but its tone Low speed accuracy is affected by fluctuations in the power supply, low torque low speed. With the rapid development of power electronics technology, frequency control technology has matured, frequency converter has been widely used in various sectors of the national economy, its smooth stepless speed regulation, high reliability, high precision, and save Electricity, can improve the level of automation, etc., in the plastics industry has been a good embodiment, and gradually replaced the DC and speed motor speed, to a certain extent, increased the level of automation of plastic machinery, and promote the plastic industry development of. A decorative material factory in Zhongshan has a speed motor 110kw, 4-level extruder, the motor output speed of 600 rev, the current has reached 160A, once the speed exceeds 600, the motor current fluctuations, the speed instability , And mechanical shaking, unable to produce normally. In order to improve production and save energy, the boss of the factory was determined to carry out technological transformation on this machine. After many market investigations, he decided to replace the original speed-regulated motor with variable-frequency speed control. In June 1999, he purchased one 93kw, 6-pole ordinary three-phase AC induction motor, and an Ampang letter AMB-G5 93kw inverter, replace the original speed motor, the modified motor speed is 780 and the inverter input current is only 80A, not only to improve production efficiency by 30%, but also save electricity more than 1,000 yuan a day, in two months time to recover all the investment costs. In the South China Sea a wire plant, with two AMB-G5 55kw inverter, installed in the wire extrusion machine, a plastic products factory in Longgang, one after another to buy more than 30 AMB-G5 products, power at 1.5 ~ 37kw installed in the plastic film blowing machine. As the inverter is not affected by the voltage fluctuation (340 ~ 420), the speed regulation accuracy is high, the quality of the product is improved, the inverter's stepless speed regulation, broad speed regulation range and smooth soft start characteristic reduce the downtime The number of times, reducing the mechanical vibration and thus increase the production, another installation of the inverter after the motor to improve the power factor, while saving a lot of energy, the inverter so many advantages greatly trusted by the majority of customers. Laser Cutting Fume Extractors,Laser Cutting Dust Collector,Laser Cutting Fume Absorber,Dust And Fume Extractor Jinan Moland Environmental Tech Co.,Ltd , https://www.sdmoland.com
AMB-G5 in the central air conditioning cooling pump on the application