Fault-tolerant blowing-in static pressure setting method and device based on variable air volume air conditioning system
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An air-conditioning system and setting method technology, applied in heating and ventilation safety systems, heating and ventilation control systems, mechanical equipment, etc., can solve problems such as energy waste and failure, reduce energy consumption, improve reliability, and avoid optimization The effect of failure
Inactive Publication Date: 2019-05-14
SHENZHEN UNIV +1
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Problems solved by technology
In other words, the failure of a few terminals or the temperature setting of a few rooms is too low will cause the optimization method to fail, resulting in energy waste
Method used
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[0038] Such as figure 1 As shown, in this embodiment, a fault-tolerant air supply static pressure setting method based on a variable air volume air conditioning system includes:
[0039] S10. Obtain the air volume setting value and the air volume actual measurement value of each terminal in the variable air volume air conditioning system;
[0040] S20. Calculate the ratio of the total air volume measured value to the total air volume set value according to the air volume set value and the air volume measured value of each terminal;
[0041] S30, judging whether the ratio is within a preset threshold range, if so, then S40, maintaining the current set value of the air supply static pressure;
[0042] Otherwise, S50. Gradually adjust the set value of the air supply static pressure according to the value of the ratio.
[0043] In this embodiment, the set value of the static pressure of the air supply is adjusted through the set value of the air volume and the measured value of ...
Embodiment 2
[0056] Such as Figure 4 As shown, in this embodiment, a fault-tolerant air supply static pressure setting device based on a variable air volume air conditioning system includes:
[0057] An acquisition module 10, configured to acquire the air volume set value and the air volume measured value of each terminal in the variable air volume air conditioning system;
[0058] Calculation module 20, used to calculate the ratio of the total air volume measured value and the total air volume set value according to the air volume set value and the air volume measured value of each terminal;
[0059] A judging module 30, configured to judge whether the ratio is within a preset threshold range, and if so, maintain the current set value of the air supply static pressure;
[0060] The adjustment module 40 is configured to gradually adjust the set value of the air supply static pressure according to the magnitude of the ratio when the ratio is not within the preset threshold range.
[0061...
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Abstract
The invention relates to the technical field of air conditioning systems, and discloses a fault-tolerant blowing-in static pressure setting method and device based on a variable air volume air conditioning system. The method comprises the steps that air volume setting values and air volume measured values of all tail ends in the variable air volume air conditioning system are obtained; the specific value of a total air volume measured value to a total air volume set value is calculated according to the air volume setting values and the air volume measured values of all tail ends; whether the specific value is within a preset threshold range or not is judged, and if the specific value is within the preset threshold range, the current blowing-in static pressure set value is kept; or else, the blowing-in static pressure set value is adjusted step by step according to the size of the specific value. Through the air volume setting values and the air volume measured values of all tail ends in the variable air volume air conditioning system, the blowing-in static pressure set value is adjusted, and the problem of optimizing efficiency losing caused by faults of the tail ends is solved, under the conditions that few tail end faults happen or the temperature setting value in few rooms is low, the blowing-in static pressure set value of an air treatment unit can still be effectively optimized, the thermal comfort requirement of all air conditioning areas can be effectively ensured, the reliability of the air conditioning system is improved, and energy consumption is reduced.
Description
technical field [0001] The present invention relates to the technical field of air conditioning systems, in particular to a method and device for setting fault-tolerant air supply static pressure based on a variable air volume air conditioning system. Background technique [0002] Variable Air Volume (VAV) is an energy-saving and comfortable air-conditioning system. When the load changes dynamically, the variable air volume terminal of each air-conditioned room changes its air valve opening to adjust the air volume entering each room, so as to maintain the thermal environment of the room at its temperature setting value. The control methods of the variable air volume terminal can be divided into two types, which are pressure-independent type and pressure-dependent type. The pressure-independent variable air volume terminal cannot sense the pressure change in the system (such as caused by the change of the valve opening of other terminals), and the pressure change will only ...
Claims
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Application Information
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