Unattended peak-adjustable central air-conditioning cold and heat source mode system and its control method

Abstract

The invention relates to an unattended peak-adjustable central air conditioning cold and heat source mode system and a control method thereof. No unattended peak-adjustable central air conditioning systems which are reliable in performance and capable of simultaneously supplying heat and cold and control methods of the systems are provided at present. The unattended peak-adjustable central air conditioning cold and heat source mode system is characterized in that an outlet of a refrigerating unit is divided into two paths through a refrigerating unit outlet connecting hole, wherein one path is connected with an ice making unit through a connecting pipe I, and the other path is connected with a direct-supply plate heat exchanger water collector through a connecting pipe IV; an inlet of the refrigerating unit is divided into two paths through a refrigerating unit inlet connecting hole, wherein one path is connected with the ice making unit through a connecting pipe II, and the other path is connected with a direct-supply plate heat exchanger water separator through a connecting pipe III; and the ice making unit is connected with an ice storage tank, the ice storage tank is respectively connected with a peak-adjusting plate heat exchanger water collector and a peak-adjusting plate heat exchanger water separator, and a heat storage tank is respectively connected with the peak-adjusting plate heat exchanger water collector and the peak-adjusting plate heat exchanger water separator. The unattended peak-adjustable central air conditioning cold and heat source mode system is reliable in performance, capable of simultaneously supplying heat and cold to ensure indoor comfort level and also capable of saving energy.

Description

technical field [0001] The invention relates to a centralized air-conditioning cold and heat source mode system and its control method, in particular to an unattended adjustable peak centralized air-conditioning cold and heat source mode system and its control method, belonging to an unattended adjustable Peak air conditioning system and its control method. Background technique [0002] On the one hand, the centralized air-conditioning system is also called the central air-conditioning system. All air-handling equipment can be concentrated in the air-conditioning room, which is convenient for centralized management and centralized adjustment and control of indoor temperature. Therefore, central air-conditioning systems are favored in modern urban buildings, and buildings using centralized air-conditioning systems account for more than 90%. [0003] On the other hand, in recent years, the valley peaks of urban electricity consumption in my country have been expanding day by ...

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Problems solved by technology

[0003] On the other hand, in recent years, the valley peaks of urban electricity consumption in my country have been expanding day by day, resulting in more investment in power construction in order to meet the peak electricity consumption on the one hand, but on the other hand, the load of urban electricity consumption in low valleys has grown slowly or even declined. adverse situation

[0004] Set up several centralized air-conditioning systems in each building in each park and set up several on-duty personnel, which will not only cause a waste of personnel, but also the difficult-to-manage human factors of the on-duty personnel leaving their posts without authorization will directly affect the air-conditioning effect and even cause safety hazards

At the same time, due to the large range of outdoor temperature changes in winter and summer, the heating / cooling capacity of the pipe network remains unchanged, which not only affects comfort but also causes waste of energy

[0005] There are also some relatively good centralized air-conditioning systems now. For example, the Chinese patent whose publication date is July 30, 2014 and whose publication number is CN203745859U discloses a remote monitoring system for an air-conditioning machine room. The remote monitoring system for an air-conditioning machine room is mainly composed of The computer room monitoring terminal, building monitoring terminal and remote control center are composed of three parts. The remote control center communicates with the air-conditioning machine room monitoring terminal through the network protocol. The building monitoring terminal realizes data interaction with the air-conditioning machine room monitoring terminal through the remote communication module, realizing remote monitoring and The function of centralized management, but it is difficult to achieve the purpose of unattended

Another example is that the public date is October 21, 2015, and the Chinese patent with the publication number CN204717988U discloses a central air-conditioning intelligent operation and maintenance system. The central air-conditioning intelligent operation and maintenance system is set on the central air-conditioning system. The central air-conditioning intelligent operation and maintenance system includes a central controller, a signal acquisition module, an equipment control module and an equipment module. The central air-conditioning intelligent operation and maintenance system uses temperature sensors, pressure sensors and humidity The sensor collects the signal during the operation of the equipment. The signal acquisition module collects and converts the signal to obtain data, and transmits the data to the central controller. The central controller obtains real-time control data after sorting the data, and sends the real-time control data Give the equipment control module, and then the equipment control module controls the operation of the equipment module. Such a cycle forms a good closed-loop control system, thereby realizing the centralized, intelligent, and unmanned operation and maintenance management of the central air-conditioning system, but the energy utilization rate is not high

[0006] To sum up, there is currently no unattended peak-adjustable central air-conditioning system with reasonable structure design, reliable performance, and simultaneous heating and cooling and its control method

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