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Method for evaluating performance of ventilation system heat exchanger, electronic device and storage medium
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A ventilation system and heat exchanger technology, applied in nuclear power generation, testing of machine/structural components, instruments, etc., can solve the problems of inability to verify whether the performance of the heat exchanger meets the design requirements, lack of theoretical data support, etc.
Active Publication Date: 2021-03-16
中广核工程有限公司 +2
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[0002]
At present, the performance test of heat exchangers in the ventilation system of nuclear power plants is required to be carried out under the design conditions "as close as possible". If the water regulating valve is stable, not fully opened and the temperature of each room in the factory building is stable within the design range, the test is qualitatively considered qualified. Although this method is simple and easy to implement, it lacks quantitative theoretical data support and cannot verify whether the performance of the heat exchanger meets the design requirements. Require
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Embodiment 1
[0120] like figure 2 As shown, it is a schematic diagram of the change of the surface of the cooling heat exchanger (cooling wet coil) and the parameters of the fluid medium.
[0121] Specifically, if the heat exchanger is a cooling heat exchanger, the evaluation data is the total heat transfer coefficient of the cooling heat exchanger.
[0122] In this embodiment, step S102: performing calculation based on monitoring parameters, and obtaining evaluation data of the heat exchanger includes:
[0123] Step A1, calculating performance parameters of the cooling heat exchanger according to the monitoring parameters.
[0124] Among them, based on the monitoring parameters, the calculation of the performance parameters of the cooling heat exchanger includes:
[0187] like image 3 As shown, it is a schematic diagram of the change of the fluid medium parameters of the heating heat exchanger.
[0188] like image 3 As shown, in this example, the evaluation data is the overall heat transfer coefficient of the heating heat exchanger.
[0189]Specifically, in this embodiment, step S102 calculates based on monitoring parameters, and obtaining evaluation data of the heat exchanger includes:
[0190] Step B1. Calculate the air mass flow rate of the heating heat exchanger according to the monitoring parameters.
[0191] Wherein, calculating the air mass flow rate of the heating heat exchanger according to the monitoring parameters includes: calculating the air mass flow rate of the heating heat exchanger according to the air volume flow rate, inlet air temperature, inlet air humidity, and inlet air density. The air mass flow rate of the heating heat exchanger satisfies:
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Abstract
The invention relates to a method for evaluating the performance of a ventilation systemheat exchanger, an electronic device and a storage medium. The method comprises: calculating based on the monitoring parameters to obtain evaluation data of the heat exchanger; evaluating the performance of the heat exchanger according to the evaluation data. By calculating the evaluation data of the heat exchanger, qualitative evaluation of the ventilation system test is converted into quantitative evaluation, and whether the performance of the heat exchanger meets the design requirement or not can be accurately verified. Besides, the external working condition of the executable test is defined, dependence on a design working condition window is weakened, it can be guaranteed that test data under thetest working condition are still effective after being popularized to the design working condition, and the problem that in a nuclear powerplant construction project, the requirement of a ventilationsystem heat exchanger test for the external environment is strict is solved.
Description
technical field [0001] The invention relates to the technical field of heat exchangers in ventilation systems of nuclear power plants, and more specifically relates to a method for evaluating the performance of heat exchangers in ventilation systems, electronic equipment and storage media. Background technique [0002] At present, the performance test of heat exchangers in the ventilation system of nuclear power plants is required to be carried out under the design conditions "as close as possible". If the water regulating valve is stable, not fully opened and the temperature of each room in the factory building is stable within the design range, the test is qualitatively considered qualified. Although this method is simple and easy to implement, it lacks quantitative theoretical data support and cannot verify whether the performance of the heat exchanger meets the design requirements. Require. Contents of the invention [0003] The technical problem to be solved by the p...
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