WP2 – Status of gas utilisation technologies D2.1 Market segmentation of domestic and commercial natural gas appliances  Report D2.2 Impact of hydrogen admixture on combustion processes – Part 1: Theory  Report  D2.3 Impact of hydrogen admixture on combustion processes – Part 2: Practice  Report  D2.4 Non-combustion related impact of hydrogen admixture – material compatibility  Report  D2.5 Testing programme for hydrogen tolerance tests of domestic …

This report aims at summarizing the different stakeholders’ opinions on H2NG blends and cross them with the THyGA results, to recommend some necessary actions to prepare the field for operational large-scale blending (liability, delayed ignition, adjustment…).

Part I of this report covers considerations regarding test gases for assessing combustion related risks of supply with gaseous fuels of the second family (i.e. natural gases) blended with hydrogen of which the concentration may vary between 0 and a maximum hydrogen concentration X (called “X% H2NG” throughout this document) to gas appliances within the …

The goals of the long-term tests were to see the impact of blends of hydrogen and natural gas on the technical condition of the appliances and their performance after several hours of operation. To do so, they were run through an accelerated test program, amounting to more than 3000 testing hours for the boilers and …

This report gathers the results from the THyGA “short-term” test campaign, over almost 3 years of laboratory activity.Short-term tests are carried out to observe how appliances react during a small duration (few minutes to few hours) on different H2NG mixtures, while long-term tests are designed to evaluate behaviour over several weeks.The analysis is based on …

This report aims at giving a National and European vision of the THyGA results: the main conclusions from the WP3 testing are dissemainted by technology segment and country to provide a local vision to stakeholders.

A major part of the activities of the THyGA project was dedicated to testing typical residential and commercial natural gas appliances in order to have a better view of their behaviour when they are fed with H2NG mixtures. Blending rates of up to 60% H2 were applied. Although most of them performed well, some were …

This report from the WP5 “Mitigation” provides information and test results regarding perturbations that hydrogen could cause to gas appliances when blended to natural gas, especially on anatural draught for exhaust fumes or acidity for the condensates. The important topic of on-site adjustment is also studied, with test results on alternative technologies and proposals of …