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In this paper, a numerical study is conducted to simulate the possible leakage events of the hydrogen dispenser based on a prototype in China whose working pressure is 70 MPa. The leakage
But solar and wind energy as renewable energy is often limited by seasons and weather which affect energy supply, resulting in an imbalance between demand and supply. The micro pumped hydro energy storage (PHES) can overcome the influence of weather and season to continuously supply energy to users.
For the concentrating solar power (CSP) system, it is known that the molten salt thermal energy storage (TES) technology with two-tank reservoir has been widely adopted in more than 50 commercial CSP projects
This paper mainly focuses on the migration and phase change characteristics of molten salt leaking from a high-temperature storage tank to the thermal-steady porous foundation materials. The effects of the different conditions, including material structure, leakage pore size, operating temperature and leaking molten salt mass, are
Failure analysis on leakage of hydrogen storage tank for vehicles occurring in oil circulation fatigue test. Yuyang Qin, Y. Gong, +1 author. Zhen‐Guo Yang. Published
Abnormal leakage failure of TP321 stainless steel pipe in hydrogen production system was systematically studied. • The processing stripes on the inner
This approach strives to use quantitative data on component leaks and failures, together with Prognosis and Health Management (PHM), and Quantitative Risk Assessment
Hydrogen leak diagnosis index: (a) anode pressure; (b) hydrogen storage tank mass; (c) hydrogen storage tank pressure. We conducted an analysis of the
If one of the following abnormal phenomena occurs in an LPG storage tank, effective control measures should be taken immediately and reported to the relevant departments in a timely manner in accordance with regulations: 1. The working pressure, medium
Since gas storage tank leak is a high-pressure leak, F r near the leak in this study is usually greater than 1000, which means that the leakage type is momentum dominated. As the speed of hydrogen near the leak continues to decrease, it is possible to transform into momentum-buoyancy dominated (10< F r < 1000) or buoyancy force
LN 2 and LNv phase storage tanks High-volume LN 2 dewars (up to 73 L) and high-capacity bulk tanks are the recommended type for long-term, indefinite storage. The more portable LN 2 dewars are the most widely used in IVF facilities, although some have advocated the safe use of LNv tanks for sperm [5, 6] and oocytes/embryos [7–9].
We numerically investigated high-pressure hydrogen leakage from facilities in storage and transportation phases. In storage phase, assuming a tank placed in a hydrogen station, we examined unsteady diffusion distance up to 100 ms after leakage. A
Diagram of the leak at the top of a rigid UWCAES storage tank at the time of the appearance of the leak (left) and at instant t (right); in blue, water; and in white, compressed air. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)
Highlights. •. The failed mechanism of a leaky 60 m 3 LNG storage tank made of 304 stainless steel was researched. •. The black strip-shaped phases in the matrix of the lower head were clarified by TEM as δ-ferrite. •. The corrosion resistance of the material was decreased by the δ-ferrite and martensite in the matrix. •.
Numerical Study on Leakage Dispersion Pattern and Hazardous Area of Ammonia Storage Tanks. December 2023. Energy Technology. DOI: 10.1002/ente.202301067. Authors: Xiangming Hu. Minghui Su. Xu Chen
Back Calculation of Leakage Accident Source Term of Liquid Ammonia Gas Storage Tank Chang Liu, Teng Su and Ru Zhou * College of Safety Science and Engineering, Nanjing Tech University, Nanjing, Jiangsu, 211816, China
In this study, based on design standards of gas storage tank of nuclear hydrogen production system and normal atmospheric environment data, influencing
Hydrogen will be a crucial pillar in the clean-energy foundation, and therefore, the development of safe and cost-effective storage and transportation methods is essential to its success.
Unexpected hydrogen leakage may occur in the production, storage, transportation and utilization of hydrogen. The lower flammability limit (LFL) for the hydrogen is 4% in air. The combustion and explosion of hydrogen-air mixture poses potential hazards to
In addition to leaks, spills can occur due to overfilling tanks, pump leaks, failing pressure line fittings, delivery spills, customer overfills, and non-operational shut-off valves on nozzles. Prompt and appropriate spill clean-up is essential, with on-site procedures for operators to follow. Leaks from underground fuel systems can severely
In this paper, the abnormal leakage failure of the TP321 stainless steel pipe that conveyed medium temperature shifting gas in a petrochemical factory was systematically studied. In order to find out the causes of the failure, the operating conditions, the material qualities of the failed pipe, the macroscopic and microscopic morphologies
When the leak is located on the side of the tank and the wind direction opposite side, with the increase of wind speed both sides of the tank are in the hazardous area. High concentrations of ammonia will spread backward across the tank with the increase of leakage volume.
Global energy shortages continue in the post-epidemic era. As clean primary energy, LNG plays an important role in the energy structure adjustment. However, with the widespread use of LNG, storage tank leaks occur frequently. In order to highlight the risk status of critical risk areas of LNG tank leakage, the "Five-high" risk system for
Abnormal I DS leakage current was directly linked to excessive accumulation of fluorine in the part of top wafer not shielded by the cassette baffle. The concentration of fluorine bubbles composed of excess vacancies and fluorine in the upper silicide layer near the TiN and the interface between TiSi 2 silicide and P + -silicon, was
Undoubtedly, for such vehicles, the hydrogen storage tank that directly contacts the hydrogen gas is an important energy storage vessel, and is intimately related to the safety of the whole vehicle. Hence, it is of great significance to carry out reliability evaluation of the high-pressure hydrogen storage tanks for the purpose of identifying
This study integrates artificial intelligence (AI) algorithms and temperature sensing data to achieve intelligent monitoring and diagnosis of leakage in LNG storage tanks and introduces the ConvLSTM framework for deep learning and recurrent neural network training. Temperature is the most important safety monitoring indicator for
When an LNG storage tank leaks, the positioning of the tank leak location can help managers to take safety measures on time. From the simulation of the LNG tank leakage ( Fig. 23 ), it can be seen that the LNG slowly diffused downward after leaking into the insulation layer.
The structure of this paper is as follows. Section 2 details NREL''s Leak Rate Quantification Apparatus (LRQA) including design parameters, system validation, and results from initial testing of failed hydrogen components. Section 3 presents the identified data needs for both QRA and PHM applications in liquid hydrogen systems.
3.3 Leakage simulation. 3.3.1 Poisoning accident simulation When a propylene storage tank instantaneously or slowly leaks, a. large area of liquid pool is formed, and the leaked gas rapidly turns
Numerical Study on Leakage Dispersion Pattern and Hazardous Area of Ammonia Storage Energy Technology ( IF 3.8) Pub Date : 2023-12-24, DOI: 10.1002/ente.202301067
The leakage accident is analyzed with respect to leakage sizes, leak directions, and the time to stop the leakage. It is found that, due to the large mass flow rate under such high pressure, the leak direction and the layout of the components inside the dispenser become insignificant, and the ignitable clouds will form inside the dispenser in
Paper • The following article is Open access. Simulation Analysis of Propylene Storage Tank leakage Based on ALOHA Software. Rili Yang1, Ke Gai1, Fengfeng Yang1, Guangsheng Zhang1, Ning Sun1, Biyang Feng1 and Xiulan Zhu1. Published under licence by IOP Publishing Ltd IOP Conference Series: Earth and
Butt welding was adopted for the baseboard of the tank, as shown in the Fig. 2. Through this welding method, the baseboard was firstly welded to a piece of cushion board through spot welding and then to another piece through butt welding. However, the welding stress might be caused through two times'' welding.
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