arpadveress 
Today’s challenge: H2 mixing into normal / daily gas piping network… 2-5-1o%? and coming to your house…
If a gas piping network is mixed up with hydrogen, it is crucial to consider the potential safety risks and technical challenges that arise. Hydrogen behaves differently from natural gas, and thus, the existing gas infrastructure may need to be modified or replaced to handle hydrogen safely and efficiently.
Few considerations to keep in mind:
+ Material Compatibility: Hydrogen can cause material degradation through hydrogen embrittlement or other chemical reactions in metals and polymers. The existing pipeline materials must be examined to ensure compatibility with hydrogen.
+ Leakage: Hydrogen has a lower viscosity and a smaller molecular size compared to natural gas, which makes it more prone to leakage. This increases the risk of potential leaks in the existing gas network. The entire network should be inspected and, if necessary, upgraded to minimize leakage risks.
+ Detection and Safety Systems: Hydrogen is odorless and colorless, making it difficult to detect leaks. The existing safety systems should be updated to include hydrogen-specific sensors and alarms.
+ Flammability and Explosion Risks: Hydrogen has a wider flammability range and a lower ignition energy compared to natural gas. This increases the risk of fires and explosions. Adequate safety measures and procedures should be in place to mitigate these risks.
+ Pressure and Flow: Hydrogen has a lower energy density than natural gas, which means that it must be transported at higher pressures or flow rates to deliver the same amount of energy. This might require upgrading compressors, valves, and other components of the gas network.
+ Blending: In some cases, blending hydrogen with natural gas could be a viable intermediate solution. However, this approach comes with its own set of challenges, such as ensuring a consistent blend ratio and managing the changes in combustion properties.
+ Public Awareness and Training: Public education and training programs for emergency responders, technicians, and other stakeholders should be implemented to ensure that everyone is aware of the properties and risks associated with hydrogen.
It is essential to thoroughly assess and address the unique challenges that come with integrating hydrogen into an existing gas piping network. Proper planning, implementation, and monitoring of hydrogen-specific safety measures will be necessary to ensure safe and efficient operation.
Keep up the good work!
Hydrogen can be introduced into gas pipe networks, but it requires some modifications to the existing infrastructure. Natural gas, which is currently used in many gas pipe networks, has different properties than hydrogen, and therefore, the pipelines and other equipment must be adapted to handle hydrogen safely and efficiently.
One of the main challenges in introducing hydrogen into gas pipe networks is its low density compared to natural gas. This means that a larger volume of hydrogen is required to deliver the same amount of energy as natural gas. Therefore, modifications to the existing pipelines and equipment may be necessary to accommodate the larger volume of hydrogen.
Additionally, hydrogen is a highly flammable gas, and its use in gas pipe networks requires the implementation of strict safety measures to prevent accidents. This includes the use of specialized materials in pipeline construction, the installation of safety systems, and the monitoring of hydrogen levels to ensure safe operation.
Despite these challenges, there are ongoing efforts to introduce hydrogen into gas pipe networks as a clean energy alternative to natural gas. The use of hydrogen as a fuel source is seen as an important step towards reducing greenhouse gas emissions and addressing climate change.