A most energy-saving control method and equipment for refrigeration units based on big data management

Abstract

The invention discloses a most energy-saving control method and equipment for a refrigeration unit based on big data management, including the following steps: (1) data collection, each refrigerator in the refrigeration unit is operated independently, and the temperature difference is 1 degree. Baseline, increase the flow rate of each refrigerator, record the energy consumption of each refrigerator under different temperature differences and flow rates under the rated cooling capacity, and send these data to the database to form a data summary table; (2) Formula calculation, when the on-site system needs to cool down, monitor the real-time system water supply main pipe temperature, system return water main pipe temperature and return water main pipe flow; calculate the total cooling capacity required by the entire on-site system according to the following formula. The invention solves the situation that the efficiency curve of the refrigerator cannot truly and effectively reflect the actual energy consumption of the refrigerator, improves the operating efficiency of each refrigerator, realizes intelligent control of the refrigeration system of the refrigeration unit, and greatly saves power resources .

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. ...

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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

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