Micro leakage grid

(PDF) Numerical Investigation of Micro-Leakage Flow

In order to study the characteristics of micro-leakage flow field with high-pressure underground gas wellbore, the model of flow field is built. Using numerical simulation methods, the flow fields of micro-leakage are analysed. used

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About Micro leakage grid

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6 FAQs about [Micro leakage grid]

How are natural gas micro-leakage areas located?

So the natural gas micro-leakage areas were located by drawing fitted circles based on the quasi-circular spatial distribution rules of gas stressed areas. The temporal and spatial variation of the range of stressed vegetation areas under natural gas micro-leakage is shown in Figure 10.

Does natural gas micro-leakage affect vegetation?

The impact of natural gas micro-leakage on vegetation was studied by field simulation experiments to indirectly detect natural gas micro-leakage areas. The experiment field was located in Daxing District, Beijing, with coordinates of 39°39′2.56″ N, 116°34′33.10″ E. As shown in Figure 1, the data were obtained from two different types of plots.

Can infrared thermal imaging detect natural gas micro-leakage areas?

This study used infrared thermal imaging combined with deep learning methods to detect natural gas micro-leakage areas and revealed the different canopy temperature characteristics of four vegetation varieties (grass, soybean, corn and wheat) under natural gas stress from 2017 to 2019.

How to detect natural gas leakage?

Therefore, it is of great significance to detect natural gas leakage timely and accurately. Traditional natural gas leakage detection mainly includes manual inspection , sound monitoring , gas sampling, soil detection , flow monitoring , software-based dynamic modeling monitoring , etc.

How does underground natural gas leakage affect the environment?

The leakage of underground natural gas has a negative impact on the environment and safety. Trace amounts of gas leak concentration cannot reach the threshold for direct detection. The low concentration of natural gas can cause changes in surface vegetation, so remote sensing can be used to detect micro-leakage indirectly.

Why is ground fault monitoring important for a dc microgrid?

In addition to the protection schemes, ground fault monitoring techniques for the DC microgrid are also important. Detecting a high-resistance grounding fault proves a tough and challenging task for DC system safety. Traditionally, the methods of AC injection and DC leakage are widely used .