Large-scale petrochemical device air cooler energy efficiency evaluation on-line monitoring system and method

Abstract

The invention provides a large-scale petrochemical device air cooler energy efficiency evaluation on-line monitoring system and method. The system is formed by a data acquisition and emission portion and a data receiving and processing portion. The data acquisition and emission portion comprises a wireless data transmitter, a first indirect wall temperature sensor, a second indirect wall temperature sensor, a pressure/flow sensor, a first direct air velocity/ temperature sensor, a second direct air velocity/ temperature sensor and an electric power measuring instrument, wherein the first indirect wall temperature sensor, the second indirect wall temperature sensor, the pressure/flow sensor, the first direct air velocity/ temperature sensor, the second direct air velocity/ temperature sensor and the electric power measuring instrument are connected with the signal input end of the wireless data transmitter. The data receiving and processing portion comprises a wireless data receiver, a factory real-time database system and a control system, wherein the factory real-time database system and the control system are connected with the wireless data receiver. The method comprises the steps of establishing a real-time database and calculating the performance of an air cooler online. A temperature measurement device is installed without parking; on-line monitoring of energy efficiency of the air cooler can be realized; and real-time dynamic oscillograms of thermal load, heat transfer coefficient, motor power consumption and energy efficiency ratio of the air cooler are displayed directly.

Description

technical field [0001] The invention relates to an online monitoring system. In particular, it relates to an online monitoring system and method for energy efficiency evaluation of air coolers applied to large-scale petrochemical plants. Background technique [0002] The petrochemical industry is a pillar industry of the national economy, but it is also a high-energy-consuming industry. At present, the energy-saving and emission-reduction work of the whole industry is facing severe challenges. Generally speaking, the heat of the medium below 120 °C in industry has no recovery value, and it is usually taken away by water coolers or air coolers. Compared with water cooling, air cooling has the following advantages: saving a lot of industrial water; high economy; reducing water pollution in industrial areas and improving environmental quality. [0003] The air-cooling system is an important special equipment system for large-scale petrochemical plants. The medium transported ...

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Problems solved by technology

If more monitoring points are added, cables need to be laid to tran...

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