Far-end intelligent energy-saving control system and method for central air-conditioner

Abstract

The invention relates to a far-end intelligent energy-saving control system and method for a central air-conditioner. A control interface output end of a terminal controller is in series connection to control fan power and an electromagnetic valve of cold / hot circulating water, and a central control computer sends signal to the terminal controller via a communication control module between layers. The terminal controller directly controls the fan power and the electromagnetic valve of cold / hot circulating water according to optimal control parameters sent by the central control computer. The system is mounted outside of the control system of the central air-conditioner, the terminal controller can be controlled to open and close the fan power and the electromagnetic valve of the cold / hot circulating water in an air outlet directly. In the system, modifying of the controller of a central air conditioning unit is avoided and the operation of the far-end fan power and the electromagnetic valve of the cold / hot circulating water directly is adjusted directly as the central air conditioning unit adjusts the operation of the unit according to the actual temperature or the flow of the return water automatically. The system is superimposed to the prior central air-conditioner other than changing the original set of the central air-conditioner.

Description

technical field [0001] The invention relates to an energy-saving control system, in particular to a central air-conditioning remote intelligent energy-saving control system and method for automatic remote scientific management and centralized regulation of central air-conditioning remote ambient temperature and cold / heat source load. Background technique [0002] With the rapid development of economy and society, central air conditioners, as large-scale energy-consuming equipment, have been widely used in various large and medium-sized buildings. While improving people's production and living conditions, they also consume a lot of electric energy. On June 3, 2007, the General Office of the State Council issued a notice on the strict implementation of air-conditioning temperature control standards for public buildings: All units in public buildings, including state agencies, social organizations, enterprises, institutions, and individual industrial and commercial households, e...

AI Technical Summary

Problems solved by technology

However, whether to adjust the remote temperature of the central air conditioner in accordance with the requirements of the above countries for cooling / heating can only rely on the user's personal energy saving awareness and conscious behavior, even if the operator of the central air conditioner does not follow the requirements, it cannot intervene

After investigation, there are still a large number of users who set the central air-conditioning temperature below 26°C in summer, and some set it to 18°C, which is far beyond the national regulations, resulting in a large amount of power consumption in vain.

[0003] At present, the centralized monitoring and start-stop control of the equipment in the central air-conditioning system, including the central host, chilled water pump, cooling water pump, etc., is mainly carried out through the BA (Building Automation System-RTU) system. The control of each device is based on the configuration of the equipment and is out of touch with the specific working conditions of the end. Therefore, the BA system cannot manage the end of the central air-conditioning system in real time, and the energy saving is poor.

At the same time, due to the large capital investment and many construction restrictions, it can only be limited to the on-site control of the central main engine room and cannot be used to transform the remote cold room.

[0004] There are also some centralized control systems, most of which use PLC as the main control unit, which is not only expensive, but also requires extensive control and transformation of the control part of the air conditioning system, which limits the scope of use

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