Most energy-saving control method and equipment for refrigerating unit and based on big data management

Abstract

The invention discloses a most energy-saving control method and equipment for a refrigerating unit and based on big data management. The most energy-saving control method comprises the following stepsthat (1) data collecting is conducted, specifically, each refrigerating machine in the refrigerating unit is operated separately, taking 1-degree temperature difference as a standard, the flow rate of each refrigerating machine is increased, the energy consumption condition of the refrigerating capacity under different temperature differences and flow rates as well as under the rated refrigerating capacity of each refrigerating machine is recorded, and data are transmitted to a database to form a data general table; and (2) formula operation is conducted, specifically, when a field system needs to be cooled, the real-time water supplying main pipe temperature of the system, the real-time water returning main pipe temperature of the system and the real-time flow rate of a water returning main pipe are obtained through monitoring, and the total cooling capacity required by the whole field system is calculated according to the following formula. According to the most energy-saving control method for the refrigerating unit and based on big data management, the problem that the efficiency curves of the refrigerating machines cannot truly and effectively reflect the actual energy consumption condition of the refrigerating machines is solved, the operating efficiency of each refrigerating machine is improved, intelligent control of a refrigerating system of the refrigerating unit isachieved, and electric power resources are saved to a great extent.

Description

technical field [0001] The invention belongs to the technical field of industrial or commercial circulating chilled water, and in particular relates to a control method and equipment for the most energy-saving refrigeration unit based on big data management. Background technique [0002] In industrial and commercial circulating chilled water, refrigeration is mainly performed by refrigeration units. The design unit calculates the required cooling capacity by calculating the total load, and then chooses to purchase multiple refrigerators according to the cooling capacity of each refrigerator. Used in parallel, each freezer operates independently. [0003] However, the above-mentioned operation mode has the following defects: 1. Because the design cooling capacity load is far greater than the actual use load or because the refrigeration unit cannot distribute the cooling capacity in a timely manner, each refrigerator works at a low efficiency, wasting a lot of electricity; 2. ...

AI Technical Summary

Problems solved by technology

[0003] However, the above-mentioned operation mode has the following defects: 1. Because the design cooling capacity load is far greater than the actual use load or because the refrigeration unit cannot distribute the cooling capacity in a timely manner, each refrigerator works at a low efficiency, wasting a lot of electricity; 2. 1. Each chiller operates independently. When a single chiller stops or the load changes, the chilled water internal circulation pump, chilled water pump, and freezing tower related to the chiller are still operating at power frequency, resulting in a huge waste of power resources

Images