Central air-conditioning control method

Abstract

The invention belongs to the technical field of central air-conditioning, and relates to a central air-conditioning control method. The method comprises: (1) the collection of control parameters and the calculation of load Q at the freezing water side; (2) the loop control method of a compressor; (3) the loop control method of an evaporator; and (4) the loop control method of a condenser. The central air-conditioning control method disclosed by the invention can be used for achieving the energy-saving control of a central air-conditioning system rapidly and accurately.

Description

technical field [0001] The invention relates to a small and medium-sized central air-conditioning embedded controller, in particular to an embedded controller capable of realizing networked control of multiple refrigeration and air-conditioning equipment in a building. Background technique [0002] With the development of my country's economy and society, central air-conditioning has been widely used in public buildings. [0003] In addition, the existing dedicated controllers for central air-conditioning systems are expensive and inconvenient to use and maintain, which is not conducive to practical popularization and application. In my country, there is still a lack of a low-cost, high-reliability, energy-saving operation, networking, and a dedicated controller suitable for single or multiple central air-conditioning equipment. [0004] In terms of control algorithms for central air-conditioning, scholars at home and abroad have experienced an organic transition from singl...

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Problems solved by technology

[0004] In terms of control algorithms for central air-conditioning, scholars at home and abroad have experienced an organic transition from single-input single-output control to multiple-input multiple-output control in the control of refrigeration systems. For the control of refrigeration systems, although the system simulation model can be used for reference, However, the simulation model cannot fully reflect the input-output relationship of the system, and it is too complicated for the control to meet the real-time requirements of the control system. Moreover, the control algorithm established according to the object model often appears to be very different from the actual system. The problem of model inaccuracy is very prominent, and thus the ideal control effect cannot be achieved

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