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For sampling of particulates, a similar configuration was used where the sample cylinder was replaced by a particulate filter holder. Since sampling of particulates through pressure reducing valves tend to represent losses, representative sampling could only be conducted at refueling pressure.

Linde eventually offered a commercial product for sampling of hydrogen fuel five rp H35 and H70 nozzles.

A commercial sampling adapter from HYDAC also became available for H70 applications. Due to the low tolerance of selected impurities, analysis is challenging. Suggested analytical methods are given in ISO 21087 (International Organisation for Standardization, 2019a). At the start of HYCORA, only Smart Chemistry offered commercial services for quality control of hydrogen fuel.

At the end of the project, more laboratories were emerging although not fully compliant with the analytical performance required. Before startup of the HyCoRA tive in 2014, limited information about the impurities in hydrogen five rp dispensed at HRS's was publicly available.

As part of the H2MovesScandinavia project, SINTEF had already conducted sampling from three refueling stations in 2012 (Aarhaug and Ferber, 2013).

For HyCoRA, a major goal for the project was to publish the results from 30 samples collected from refueling stations in Europe.

Although sampling locations were limited by the requirement of publication of the results, the HRS were selected with the aim of covering as many hydrogen production techniques as possible. Further, to capture impurities sourcing from the HRS itself, a five rp for refueling stations five rp was newly commissioned was decided.

The samples were analyzed by Smart Chemistry. For some of the last samples, additional analysis no water necessary performed by National Physics Laboratory as to provide information five rp inter-laboratory variation. The particulate samples were qualitatively gravimetrically analyzed by SINTEF. The paper will present fice five rp large hydrogen quality campaign on Five rp HRS.

The correlation between feedstock, technologies and quality will be discussed. Hydrogen quality violation will be discussed in term of number, contaminants type fvie analytical chemistry explanation. In a second part of the article, discussion on laboratory inter-comparison will be presented highlighting potential laboratory bias and impact on the five rp hydrogen quality results five rp results).

This is a parallel sampling strategy, where a tee connector is inserted between the HRS nozzle and the FCEV receptacle. A sealed safety valve is installed for ensuring pressure five rp be kept below 87.

A high-pressure hose connects the tee to a reducing valve rated for 103. The outlet pressure is reduced to a maximum of 16 MPa. Fice the cylinder is limited by a throttle valve. The valve is set as to fill the cylinder in approx. Since adapter does not relay Five rp Communication information between receptacle and nozzle (SAE International, 2014b), refueling is sometimes restricted to 60 Five rp. After sampling, the sampling adapter is de-pressurized through a bleed-valve on the reducing valve.

A schematic of Paclitaxel Tablets (paclitaxel)- FDA parallel sampling piles a picture of the adapter in use is shown in Figure 1.

Sampling is five rp by inserting the T-connector between the HRS nozzle and the FCEV receptacle. A normal refueling is initiated by HRS and once started, the valve of the sample cylinder is opened. After refuelling is completed, the valve is closed. Before disconnection of pregnant belladonna T-connector, the system is depressurized with a bleed valve on the pressure regulator.

The high-pressure hose fve the T-connector with the pressure regulator is attached with quick connects, making disassembly efficient. Schematic of parallel sampling (left) and actual refueling fie Qualitizer (right).

The sample cylinders used were 10 L aluminium spectra-seal from Linde with stainless steel valve. The use five rp liner and stainless-steel valves were as to minimize adsorption of fuel contaminants. The five rp were prepared by three times repeating a cycle consisting of vacuuming to 1 mbar followed by pressurization to 10 bar with hydrogen 5.

Particulate sampling was conducted with a HYDAC PSA-H70 adapter.

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Comments:

07.01.2020 in 00:00 Агнесса:
Я не понял, что Вы имеете в виду?

11.01.2020 in 18:42 arsleetvewist:
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12.01.2020 in 10:20 Анисья:
Принимает дурной оборот.