Energy-saving intelligent ecological central air conditioning device

Abstract

The invention discloses an energy-saving intelligent ecological central air conditioning device. According to the structure of the energy-saving intelligent ecological central air conditioning device, the output end of central air conditioner operating parameter collecting equipment is connected with the input end of a controller, the output end of the controller is connected with the input end of a frequency converter, and the output end of the frequency converter is connected to a central air conditioner. The central air conditioner comprises a main refrigeration machine, a cooling water pipe, a freezing water pipe, a cooling water circulating pump, a freezing water circulating pump and a cooling tower fan. The cooling water pipe and the freezing water pipe are connected to the main refrigeration machine, the cooling water circulating pump is connected to the cooling water pipe, and the freezing water circulating pump and the cooling tower fan are connected to the freezing water pipe. The central air conditioner operating parameter collecting equipment comprises a flowmeter, a differential pressure transducer and a temperature sensor. The frequency converter comprises the frequency conversion output end of the cooling water circulating pump, the frequency conversion output end of the freezing water circulating pump and the frequency conversion output end of the cooling tower fan. The energy-saving intelligent ecological central air conditioning device has the beneficial effects that refrigerating capacity is output in the manner of temperature compensation and on-demanded refrigeration, the central air conditioner operates in the optimum work state, the aim of saving energy is achieved, and in addition, the intelligent household concept and intelligentization are introduced.

Description

technical field [0001] The invention relates to an energy-saving control device, in particular to an energy-saving intelligent ecological central air-conditioning device. Background technique [0002] At present, most of the central air-conditioning systems are mostly early product models, and they are all running at full load. The number of circulating pumps is controlled by adjusting the valve opening, and the valve position is used to adjust the flow rate. This single, open-loop, extensive control And the adjustment mode causes a lot of waste of electric energy, the control is not precise enough, and it is uneconomical to use. With the rapid development of urbanization, more and more central air conditioners are used in buildings. At present, the energy consumption of central air-conditioning accounts for more than 40% of the entire building. Therefore, how to take effective measures to carry out energy-saving control of central air-conditioning, so as to reduce the ener...

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Problems solved by technology

In the design of central air-conditioning, in order to ensure that the needs of users can be met in the case of the highest weather temperature, it is usually designed according to the maximum load and there is a margin of about 15%. Therefore, in normal use, the central air-conditioning cannot reach full-load operation, but The cooling water pump unit and the chilled water pump unit work in a fixed flow mode set according to the maximum design flow rate, which leads to a mismatch between the flow rate of the cooling water pump unit and the chilled water pump unit and the central air-conditioning load, resulting in a great waste of resources

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