Energy efficiency estimation online monitoring system for refrigerating system

Abstract

The invention discloses an energy efficiency estimation online monitoring system for a refrigerating system, which is used for online monitoring on temperature, pressure and energy consumption in the refrigerating system. The monitoring system comprises a data acquisition device, a room temperature-energy consumption modification and display device, a refrigerating coefficient modification and display device and a monitoring center. The monitoring center is connected with the data acquisition device via the Internet or the GPRS (General Packet Radio Service); the data acquisition device acquires the room temperature and temperature, pressure and energy consumption parameters of the refrigerating system; the room temperature-energy consumption modification and display device modifies the refrigerating system energy consumption acquired by the data acquisition device, and further outputs the modified data; the refrigerating coefficient modification and display device modifies the refrigerating coefficients, and further outputs the modified data; and the monitoring center finishes the works of analyzing the temperature, the pressure, the actual energy efficiency coefficient and the energy consumption of the refrigerating system, executing early warning, displaying, querying and the like, thereby realizing online monitoring and fault diagnosis, maintaining high-efficiency operation of the whole refrigerating system and facilitating the energy efficiency estimation on energy-saving reconstruction projects of the refrigerating system.

Description

technical field [0001] The invention relates to an on-line monitoring system for energy efficiency evaluation, and more specifically relates to an on-line monitoring system for energy efficiency evaluation of a refrigeration system. Background technique [0002] In recent years, as the international community has paid more and more attention to energy conservation and emission reduction, energy-saving transformation projects for high-power-consuming refrigeration systems have been launched one after another. For such technical transformation projects, one of the important topics is to verify the energy-saving effect before and after the transformation. At present, the common method is to install an independent electric meter in the refrigeration system, and monitor the energy saving of the system by comparing the power consumption before and after the technical transformation. The main problem of this method is that the energy consumption data is directly read through the e...

AI Technical Summary

Problems solved by technology

The existing monitoring system cannot take into account the impact of room temperature changes on system power consumption, but can only select a time period when the room temperature is relatively stable, or compare power consumption by ignoring the impact of room temperature changes, which not only reduces work efficiency, but also Affect the accuracy of verification of energy-saving retrofit effect

In addition, simply relying on the comparison of power consumption cannot monitor the changes in the operating status of the refrigeration system before and after the transformation, and it is difficult to find and eliminate possible faults in the system, so it is difficult to guide system optimization more effectively

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