Energy-saving valve with intelligent control and control method thereof

Abstract

The invention discloses an energy-saving valve with intelligent control and a control method thereof. The energy-saving valve control method comprises the following steps that the a user set value isreceived and a system sampling value is received, detected and calculated; the deviation is calculated by comparing the user set value with the system sampling value; whether the user set value and the system sampling value heave a deviation over a set range or not is determined; if yes, a user deviation value is obtained; an opening operating value of the energy-saving valve is calculated based on the user deviation value and the user set value; opening adjustment of the energy-saving valve is executed based on the opening operating value; and the user set value and the system sampling valueare balanced. The stability and precision control of the system operation are realized, the comfort is improved, and the operating cost is saved.

Description

technical field [0001] The invention relates to the field of central air conditioning, in particular to an intelligently controlled energy-saving valve and a control method thereof. Background technique [0002] With the development of urban construction, building energy consumption has accounted for a relatively large proportion of the country's total energy consumption, and in building energy consumption, air-conditioning energy consumption accounts for a large proportion, and it is showing a rising trend, especially in In summer during the peak period of urban electricity consumption, the power consumption of central air-conditioning accounts for a large proportion. Therefore, the energy-saving design of central air-conditioning is increasingly important and urgent. [0003] In the design of the existing central air-conditioning, in order to realize energy-saving of the air-conditioning, various energy-saving measures such as variable air volume and variable water volume ...

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Problems solved by technology

[0003] In the design of the existing central air-conditioning, in order to realize the energy-saving of the air-conditioning, various energy-saving measures such as variable air volume and variable water volume are adopted, but the energy-saving effect is not very satisfactory.

[0004] According to this traditional control method, the variable air volume and variable water volume of the central air conditioner are only controlled according to the room temperature setting value to meet the needs of the indoor temperature. For example, when the set room temperature setting value is far lower than the actual demand, the opening of the regulating valve of the terminal refrigeration equipment is too large, and some regulating valves are even at 100% opening, resulting in a situation where the chilled water pump flow is too large, resulting in The temperature difference between the supply and return water flowing through the terminal refrigeration equipment is much lower than the normal temperature range, and the temperature difference is extremely unstable

In addition, the lower temperature difference between supply and return water requires a larger flow rate of chilled water. If things go on like this, the chilled water pump will consume more electricity

[0005] The above situation will even cause hydraulic imbalance of the central air-conditioning system when it is more serious, resulting in uneven cooling and heating of the system, resulting in unstable operation of the system, resulting in the current situation of high energy consumption of central air-conditioning

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