Analysis of the Risks of Hydrogen Leakage from Hydrogen-Powered Cars and Their Possible Impact on Automotive Market Share Increase

Sinay, Juraj; Brestovič, Tomáš; Markovič, Jaromír; Glatz, Juraj; Gorzás, Michal; Vargová, Marta

doi:10.3390/app10124292

Cited by 6 publications

(5 citation statements)

References 10 publications

(11 reference statements)

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“…The simplest methods often applied in practice at the level of machinery risk assessment and the work activities incorporated into the risk assessment are called the "risk matrix" [25,26,32,34,37,38]. It could be said that it is a framework method that enables the identification of hazardous properties and hazards that may result from them, an assessment of the risks and their evaluation according to the "own" rules of the reviewer (e.g., the organization or its management) considering the determined acceptance rate.…”

Section: Risk Assessment Methodsmentioning

confidence: 99%

“…The reason for this is obvious. Even with a basic knowledge of EN ISO 12100 [14,[24][25][26], the harmonized standards went through several alterations, from EN 292-1, 2, EN 1050, EN ISO 14121-1, to EN ISO 12100-1, 2), and there still happens to be incomprehension of the importance of the individual steps of risk assessment (Figure 1):…”

Section: Basic Principles In Risk Assessment Proceduresmentioning

confidence: 99%

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Methodology for Complex Efficiency Evaluation of Machinery Safety Measures in a Production Organization

et al. 2021

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Even though the rules for the free circulation of machinery within the European Union (EU) market have existed for more than 30 years, accidents related to their activities have constantly been reaching significant value. When designing a machine, the design must stem from a risk assessment, where all stages of its life cycle and the ways to use it must be taken into consideration. In industrial operations with old machinery, despite fulfilling its function reliably, the safety level is below the developing requirements for safe operations. The proposed methodology to assess machinery safety conditions comes from the assumption of the proper application of risk assessment steps and their effectiveness in risk reduction mainly through implementing both effective and efficient preventive measures. The objective of the research applied in three operations was to verify the methods concerning machinery safety and its management. The created methodology, based on 19 requirements for safety, evaluates the level of current measures using a criterion of the current safety status and the total effectiveness of safety measures. Its output is the assessment of the efficiency level of the implemented safety measures of each machine as well as of the whole operation.

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Section: Risk Assessment Methodsmentioning

confidence: 99%

Section: Basic Principles In Risk Assessment Proceduresmentioning

confidence: 99%

Methodology for Complex Efficiency Evaluation of Machinery Safety Measures in a Production Organization

et al. 2021

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“…To reduce the consequences, tools, trying to reduce the extent of damage after hazardous event origination (e.g., sprinkling, extinguishing, alarm sirens) -the so-called reactive measures, are applied. The simplest method often applied in practice on the level of machinery risk assessment and work activities risk assessment is the so-called "risk matrix" [25,26,32,34,37,38]. It could be said that it is a framework method enabling identification of hazardous properties and hazards resulting from them, assessment of risks and their evaluation according to "own" rules considering determined acceptance rate of a reviewer (e.g.…”

Section: Risk Assessment Methodsmentioning

confidence: 99%

“…The reason is obvious. By basic inevitable knowledge of EN ISO 12100 [14], [24][25][26] (by the way, the harmonized standard went through several alterations, from EN 292-1, 2, EN 1050, EN ISO 14121-1, EN ISO 12100-1, 2), there still happens to be incomprehension of the importance of individual steps of risk assessment ( Figure 1):…”

Section: Base Principles In Risk Assessment Proceduresmentioning

confidence: 99%

The Complex Approach in Risk Assessment and its Application at Machinery Safety Management

Pačaiová¹,

Andrejiová²,

Balažiková³

et al. 2020

Preprint

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Even though the rules for free movement of machinery within the European Union market have existed for more than 30 years, accidents related to their activities have constantly been achieving significant value. When designing the machine, a designer must stem from risk assessment, whereas all stages of its life cycle and ways of its use must be taken into consideration. In industrial operations, there is old machinery, which, although fulfilling its function reliably, the safety level is not in accordance with the developing requirements for their safe operation. The proposed methodology of assessment of the machinery safety condition comes out from the presupposition of the right application of steps of risk assessment and their reduction mainly by means of implementation of both effective and efficient preventive measures. The aim of the research applied in 3 operations, was to verify the method of machinery safety management. The created methodology based on 19 requirements for safety evaluates the level of the actual measures by means of the so-called criterion of current status and total efficiency of measures. Its output is the assessment of the efficiency level of implemented safety of each machine as well as of the whole operation.

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“…In the cases mentioned above, the energy demand for the compression process is very high [11]. The amount of the energy used in the compression reduces the overall transformation efficiency and thereby increases the cost of the fuel [12].…”

Section: Introductionmentioning

confidence: 99%

Measurements of Operating Parameters of a Metal Hydride Compressor with a Heat Pump

2022

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The hydrogen compression that occurs in a metal hydride compressor is based on the chemical and thermal processes of hydrogen absorption and desorption into an intermetallic structure of metals. The concept presented in this article is centred on the use of an optimal metal alloy that is capable of absorbing hydrogen into its structure at a low temperature and pressure. After such an alloy is heated up, its pressure will significantly increase, and this facilitates the compression of hydrogen without it being in direct contact with the movable parts of the compressor. As a result, the safety of the compression process is increased. The hydrogen compressor contains a pair of tandem metal hydride (MH) tanks with an integrated heat exchanger. The tanks are alternately heated and cooled, so that while hydrogen is absorbed in one of the tanks it is concurrently desorbed in the other tank. The unique nature of the prototype single-stage metal hydride compressor consists in using a heat pump that facilitated a significant reduction of the consumed electric energy in the heat transport between the tandem-arranged tanks. The purpose of this investigation was to examine the possibility of integrating a heat pump as a source of heat and cold for the process of absorption- and desorption-based hydrogen compression. With the prototype MH compressor presented in this article, a compression ratio of ε = 2.0 was achieved while the tanks were operated at temperatures ranging from 12 to 55 °C. In a single cycle, the compressor worked with 166 litres of hydrogen, which was absorbed into 3.125 kg of the La0.85Ce0.15Ni5 alloy. The average heating power that was achieved on the side of the condenser that heated the MH1 tank was 362 W, and the cooling power that was achieved on the evaporator side was 300 W. The achieved value of the heat pump COP was 2.92.

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Analysis of the Risks of Hydrogen Leakage from Hydrogen-Powered Cars and Their Possible Impact on Automotive Market Share Increase

Cited by 6 publications

References 10 publications

Methodology for Complex Efficiency Evaluation of Machinery Safety Measures in a Production Organization

Methodology for Complex Efficiency Evaluation of Machinery Safety Measures in a Production Organization

The Complex Approach in Risk Assessment and its Application at Machinery Safety Management

Measurements of Operating Parameters of a Metal Hydride Compressor with a Heat Pump

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