HyDew
- Status:
- Complete
- Project Reference Number:
- NIA_NGGT0181
- STRATEGY THEME:
-
- Net zero and the energy system transition
- START DATE:
- END DATE:
Project summary
- Funding mechanism:
-
- NIA_RIIO-2
- Technology:
-
- Gas Transmission Networks
- Expenditure:
- £33,859
- Third Party Collaborators:
-
- DNV
This desktop study looks at the theoretical impact of hydrogen blends in conventional gas mixtures on hydrocarbon dewpoint and water dewpoint (HCDP/WDP).
HCDP/WDP tell us when liquid drop out will occur. There is a requirement to monitor this under Gas Safety (Management) Regulations (GSMR) as the liquids can cause damage to National Transmission System (NTS) assets and downstream customers equipment e.g. Power Station turbines or Distribution Networks.
HCDP/WDP is currently calculated by using a calculation which is not designed to include hydrogen mixes.
The Distribution Networks do not check for HCDP/WDP as National Grid Gas Transmission (NGGT) check at the entry point to the NTS only. The Distribution Networks therefore assume the gas is safe to transport and use as NGGT have checked it.
Benefits
The benefit of this project will be to gain an understanding of how the hydro carbon dewpoint calculations could need to be changed in a hydrogen blend scenario. The GDNs do not check for this and so it is the responsibility of NGGT to complete this.
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