3/2022


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INFORMATIVE ARTICLES

  • NET4GAS Hydrogen Activities: Visions and Ways to Implement H2 Transport
  • Will the European Commission Slow Down Renewable Hydrogen Development by Its New Rules?
  • GasNet Is Ready to Raise the Biomethane and Hydrogen Share in Its Grid
  • PSIG 2022 Annual Conference in San Diego
  • Hydrogen in Small- and Medium-scale Cogeneration
  • Hydrogen Technology Research & Development at VŠCHT Prague
  • GASCONTROL Configures Equipment for Hydrogen Blending with Natural Gas
  • Slovakia-based SPPD Starts to Write a Hydrogen Story
  • Options and Reliability of PE Gas Pipelines in Hydrogen Times: FRIALEN® Electrofusion Fittings Are Ready for Hydrogen Transport
  • The Ústecký Region’s Hydrogen Strategy
  • Next Stop: Ústí Characterised by Hydrogen
  • Vítkovice Commissions the First Public Hydrogen Station in the Czech Republic
  • A Hydrogen Train Presented to the Public in the Czech Republic
  • A Trip to Hydrogen Villages in Germany and the Netherlands
  • Looking into History
  • Remembering Petr Fošenbauer
  • Other Periodicals
  • The Board Congratulates
  • In Brief…
  • Gas Motoring

THE CGA‘S ACTIVITIES

  • Introducing the CGA’s Acting Executive Director
  • The Summer Gas School Has Unveiled the Industry’s Future to Young Candidates
  • P2G Market Entry Barriers
  • The Symposium in the Traditional Format Was a Success

TECHNICAL ARTICLES


Gas System Capacity Calculations Considering Hydrogen

Martin Stýblo

Summary: The contribution offers a brief summary of the key factors that influence the capacity of gas pipelines (transmission, distribution, and low-pressure pipelines) when hydrogen is blended with conventional natural gas, and confronts these simple considerations against complex calculations in case studies. It also presents the related progress in the development of the SIMONE software system. This article follows up on the author’s earlier contributions and responds to the lively discussions amongst the expert circles.

Key words: Hydrogen, natural gas, pipeline transmission, gas distribution, modelling

Using Battery Storage for Optimising Electrolyser Operation

Michal Kocůrek

Summary: The increasing deployment of renewable energy sources has necessitated an appropriate response to intermittent energy generation through energy storage. This is also true for zero-emission (green) hydrogen, which is intended to gradually replace, for example, natural gas. The options to reduce green hydrogen production costs include the optimisation of electrolyser operation by way of a suitable ratio of photovoltaic and electrolysis, or, potentially, by way of an addition in the form of daytime storage in batteries. The electrical energy generated by photovoltaic during the peaks stored in batteries and the subsequent use thereof during the night can increase the overall utilisation of the electrolyser, but at the cost of more expensive input electricity. On the other hand, higher generation of photovoltaic electricity for a greater utilisation of the electrolyser’s rated power requires additional costs of connection and surplus electricity supply to the distribution system.

Key words: Hydrogen, photovoltaic, batteries, electrolyser, storage

Prospects for Hydrogen Mobility in Road Transport

Jan Bezděkovský

Summary: The article summarises the current status of hydrogen mobility in road transport in the EU countries, including the Czech Republic, not only offering a comparison with the development in battery e-mobility but also describing the main obstacles that currently prevent development of hydrogen mobility comparable with what battery e-mobility is experiencing today. Separate space is dedicated to the potential of hydrogen mobility in freight transport as this market segment was most often mentioned in connection with hydrogen in the past. It also offers the current view of several expert studies on this issue and mentions the current development of European legislation around the deployment of infrastructure for alternative fuels, which can fundamentally decide on the future direction of hydrogen mobility.

Key words: Hydrogen mobility, battery e-mobility, freight transport, EU regulation

INTERVIEW


Petr Mervart, Hydrogen Technologies Commissioner of the Minister of Industry and Trade

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