Electricity economizer centralized management method and system of central air-conditioning

Abstract

The invention relates to a method and a system for centralized management of an electric saver of a central air-conditioner; a water flow pressure difference sensor between a water supply main pipe and a return water main pipe of a central air-conditioner freezing water system, a flow meter for a two-way freezing water return pipe, a water temperature sensor for a back-way freezing water return pipe of a freezing water pump, the water temperature sensor for a freezing water outlet pipe of an air conditioning mainframe, the water temperature sensor for a cooling water outlet pipe of the air conditioning mainframe and the water temperature sensor for a cooling water inlet main pipe of the air conditioning mainframe respectively collect pressure difference, flow speed and water temperature of the corresponding position; collection values are transferred into a fuzzy controller, the fuzzy controller gains dynamic flow and speed parameters through the control of a fuzzy prediction model and an optimal algorithm model, the dynamic flow and speed parameters are transferred into each electric saver, and the speed and the flow of corresponding fans and water pumps are controlled through the frequency change of the electric saver. The invention has the advantages of the high temperature-adjusting precision, the good dynamic performance, the small mechanical loss, the fully-automatic remote monitoring, the closed-loop control of temperature, the soft starting and stopping of a motor and the optimum system electricity-saving rate.

Description

Technical field [0001] The invention relates to a centralized management system for power savers, in particular to a method and system for centralized management of power savers for central air conditioners. Background technique [0002] Due to the instability of the central air-conditioning system load, the original chilled water system and cooling water system of the air-conditioning system use multiple water pumps in parallel to supply water. The water flow is controlled by manual control, which can meet the requirements of air-conditioning load changes to a certain extent. , The power of a single pump is relatively large, and changing the number of operating units of a single pump can significantly change the water flow rate, and it is difficult to accurately control the water flow requirements of the refrigeration unit. At the same time, the load of the air conditioning system is different in different stages. [0003] Therefore, according to the load requirements, the air c...

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Problems solved by technology

[0002] Due to the instability of the load of the central air-conditioning system, the original chilled water system and cooling water system of the air-conditioning system use multiple water pumps to supply water in parallel, and the flow of water is controlled by manual control, which can meet the requirements of air-conditioning load changes to a certain extent. , the power of a single pump is relatively large, changing the number of single pumps can significantly change the water flow, it is difficult to accurately control the water flow requirements of the refrigeration unit

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