At present, the amount of recycled water in China has accounted for 70% of the total industrial water use, and the energy consumption for operation is huge. According to the current situation of energy consumption in industrial circulating water systems, Hangzhou Zheda Technology Co., Ltd. independently developed a new type of industrial circulating water system integrated energy-saving optimization operation technology (WECS), and related systems have successfully applied more than 100 sets, and the comprehensive energy-saving rate reached 30. %~60%.
WECS analyzes the energy distribution and exchange efficiency of industrial circulating water systems based on the principles of fluid mechanics and heat exchange, and uses advanced energy-saving control methods in combination with smart valve technology, industrial frequency conversion technology, and pumps, valves and pipe networks in industrial circulating water systems. Terminal heat exchangers, cooling towers and other units are optimally controlled to improve the overall energy efficiency of industrial circulating water systems and achieve comprehensive energy conservation goals.
The basic strategy of WECS is to control the temperature of the cooling terminal strictly within the set interval through the optimal control of the pump water volume and the smart valve. The wisdom valve is always in a large open position for real-time intelligent adjustment, minimizing the pipe network damping. According to the on-line detection of the cooling water temperature, the smart valve and the cooling fan of the cooling tower are optimized and controlled so that the cooling effect of each cooling tower is optimized. In the implementation of the above three controls at the same time, determine the number of boot units and frequency conversion of the pump group to optimize the control, so that the pump output power is minimal, so as to maximize the degree of power saving. On the basis of summarizing the energy-saving optimization operation, the specification characteristics of the Water Pump can be adjusted and modified to achieve the optimal configuration of the energy efficiency of the pump unit. Compared with the traditional pump single-point energy-saving technology, the intelligent balance and efficient transmission and distribution technology for pipe network, the integrated intelligent frequency conversion operating technology based on terminal temperature control, the optimized operating technology of cooling towers with multi-parameter compensation, and the whole process of circulating water system Energy efficiency analysis and energy management technologies are innovations in WECS technology.
It is understood that the current WECS technology has been successfully applied in a number of petrochemical companies such as Liaoning Chemical Industry Corporation, Zhenhai Refinery, Yangzhou Petrochemical Plant, Shanghai Petrochemical Co., Ltd., and Fujian Jinlun Petrochemical, with significant energy savings.
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