Control method for intelligent power saving of freezing pumps in central air conditioner monitoring system

Abstract

The invention relates to a control method for intelligent power saving of freezing pumps in a central air conditioner monitoring system. According to the control method, the technical problem that deficiency exists in design of a control method for intelligent power saving of freezing pumps in an existing central air conditioner monitoring system is solved. According to the main points of the control method for intelligent power saving of the freezing pumps in the central air conditioner monitoring system, when load of the tail end of a central air conditioner is changed, the water supply and return temperature, the temperature difference, the pressure difference and the flow of a water system are also changed along with the load; detected parameters are sent to an intelligent power saving managing device by a flow gauge, a pressure difference sensor and a temperature sensor, according to the collected real-time data and system historical data, based on the principles that frequency conversion water pump efficiency is highest, and frequency conversion water pump total power consumption is lowest, the intelligent power saving managing device automatically adjusts the running number and frequency of the freezing pumps; and the frequency is adjusted according to the advanced composite loop control algorithm that the temperature serves as an outer loop, and the pressure difference serves as an inner loop, and the temperature difference set value is adjusted and optimized in a dynamic mode according to balancing of supply and demand of a tail end cooling capacity, so that acting of the freezing pumps is controlled, the freeze water flow is changed, and output energy of the system is matched with a tail end load demand.

Description

technical field [0001] The invention relates to a central air-conditioning monitoring system, in particular to an intelligent power-saving control method for a refrigeration pump in the central air-conditioning monitoring system. Background technique [0002] The central air-conditioning system is composed of one or more cold and heat source systems and multiple air-conditioning systems. Generally, the principle of liquid vaporization refrigeration is used to provide the required cooling capacity for the air-conditioning system to offset the heat load of the indoor environment; the heating system is The air conditioning system provides the heat needed to counteract the cooling load of the indoor environment. The refrigeration system is a crucial part of the central air-conditioning system, and its type, operation mode, and structural form directly affect the economy, efficiency, and rationality of the central air-conditioning system in operation. In order to achieve the eff...

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Problems solved by technology

[0003] In order to overcome the above-mentioned deficiencies, the object of the present invention is to provide the field with an intelligent power-saving control method for refrigeration pumps in a central air-conditioning monitoring system, so as to solve the Inconvenient setting of temperature difference, switching of intelligent power-saving automatic and manual control mode of refrigeration pump and cooling pump, technical problems of inconvenient setting

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