2022
DOI: 10.1016/j.apenergy.2022.118967
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A coupled transient gas flow calculation with a simultaneous calorific-value-gradient improved hydrogen tracking

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Cited by 8 publications
(9 citation statements)
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“…The gas compressibility has a strong effect in transmission systems while the hydrogen propagation affects both distribution and transmission systems. The state of a GS is described by the pressure at each node π N , the volume flow rate at each terminal of the network at standard conditions q v,n,Te , and the calorific value at each node h o,N [21]. The vector is of size (2N + T e) × 1, in which T e is the number of terminals:…”
Section: Gas Systemmentioning
confidence: 99%
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“…The gas compressibility has a strong effect in transmission systems while the hydrogen propagation affects both distribution and transmission systems. The state of a GS is described by the pressure at each node π N , the volume flow rate at each terminal of the network at standard conditions q v,n,Te , and the calorific value at each node h o,N [21]. The vector is of size (2N + T e) × 1, in which T e is the number of terminals:…”
Section: Gas Systemmentioning
confidence: 99%
“…Here, the sign of the volume flow rate depicts if a flow is entering (positive sign) or leaving (negative sign) the pipeline. A detailed description of the power flow calculation can be found in [21]. The nodal pressures and terminal volume flow rates include the dynamic gas behavior arising from the gas compressibility, which is determined by six equations.…”
Section: Gas Systemmentioning
confidence: 99%
“…However, a hydrogen injection introduces a dynamic behavior due to the hydrogen proagation which must be considered. A detailed description of the gas flow calculation can be found in [21]. The state of a GS is described by the pressure at each node π N , the volume flow rate at each terminal of the network at standard conditions q v,n,Te , and the calorific value at each node h o,N .…”
Section: B Gas Systemmentioning
confidence: 99%
“…If the propagation is assumed to be steady-state (i. e., a change in calorific value occurs simultaneously on all nodes in the network) the transfer delay is zero. The propagation of hydrogen described by ( 14) and ( 15) can be included into the power flow calculation by the calorific-value-gradient method described in [21]. With this the calorific value flow rate balance is set up for all nodes except for the slack node, tracking the hydrogen distribution:…”
Section: B Gas Systemmentioning
confidence: 99%
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