Techno-Economic Analysis of High-Pressure Metal Hydride Compression Systems
Abstract
:1. Introduction
2. The Hybrid Hydrogen Compressor Concept
3. The Techno-Economic Analysis Model
3.1. Metal Hydride Compressor System Technical Performance Model
3.2. Metal Hydride Compressor System Economic Model
4. Results
4.1. Initial Downselected Materials
4.2. Technical Analysis Results
4.3. Economic Analysis Results
5. Discussion and Future Work
6. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
Nomenclature
C | Cost ($) |
Cinst | Installed cost ($) |
CP | Specific heat (kJ/kg∙K) |
DOE | U.S. Department of Energy |
EHC | Electrochemical hydrogen compressor |
finst | Cost installation factor |
FOB | Free on board |
h | Specific enthalpy (kJ/kg), or heat transfer coefficient (W/m2∙K) |
k | Thermal conductivity (W/m∙K) |
LMTD | Log mean temperature difference (°C or K) |
Mass flow rate (kg/s) | |
M | Mass (kg) |
MH | Metal hydride |
MHC | Metal hydride hydrogen compressor |
nf | Number of fins per tube |
NT | Number of tubes |
P | Equilibrium pressure (bar) |
R | Gas constant (8.314 J/mol∙K) |
S | Heat transfer surface area (m2) |
V | Volume (m3) |
wt | Weight capacity (kgH2/kgMH) |
Greek letters | |
ΔH | Reaction enthalpy (kJ/molH2 or kJ/kgH2) |
ΔS | Reaction entropy (kJ/molH2∙K or kJ/kgH2∙K) |
Δt | Time (s) |
ηv | Volumetric efficiency |
ρ | Density (kg/m3) |
Subscript | |
abs | Absorption |
bulk | Bulk |
CH | Cold utility |
des | Desorption |
HEPV | Heat exchanger and pressure vessel |
HF | Heat transfer fluid |
HH | Hot utility |
MH | Metal hydride |
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Material | ΔHabs/ΔHdes (kJ/molH2) | ΔSabs/ΔSdes (kJ/molH2) | wt (%) | Equilibrium P (bar)/T (°C) |
---|---|---|---|---|
HP1: TiCr1.9 | 26.2 | 122.0 | 1.4 | 100/40–875/125 |
HP2: (Ti0.97Zr0.03)1.1Cr1.6Mn0.4 | 23.4 | 115.0 | 1.7 | 100/32–875/125 |
HP3: Ti1.1CrMn | 22.9 | 114.7 | 1.5 | 100/27–875/119 |
HP4: TiCrMn0.4Fe0.4V0.2 | 20.2/22.0 | 103.0/109.0 | 1.9 | 100/39–875/145 |
Material | ρbulk (kg/m3) | kMH (W/m∙K) | CpMH (J/kg∙K) |
---|---|---|---|
HP1: TiCr1.9 | 3130 | 8.0 | 486 |
HP2: (Ti0.97Zr0.03)1.1Cr1.6Mn0.4 | 3140 | 8.0 | 485 |
HP3: Ti1.1CrMn | 3170 | 8.0 | 493 |
HP4: TiCrMn0.4Fe0.4V0.2 | 3170 | 8.0 | 491 |
Material | Sensible Power (kW) (100 kgH2/h) | Reaction Power (kW) (100 kgH2/h) | Total Power (kW) (100 kgH2/h) |
---|---|---|---|
HP1: TiCr1.9 | 130.8 | 366.8 | 497.6 |
HP2: (Ti0.97Zr0.03)1.1Cr1.6Mn0.4 | 117.4 | 327.6 | 445.0 |
HP3: Ti1.1CrMn | 139.2 | 320.6 | 459.8 |
HP4: TiCrMn0.4Fe0.4V0.2 | 127.5 1 | 308.0 1 | 435.5 1 |
Material | Number of Tubes 1 (1 kg/h–100 kg/h) | Number of Fins 2 (1 kg/h–100 kg/h) | Length, L 1 (m) (1 kg/h–100 kg/h) | Water Flow 1 (g/s) (1 kg/h–100 kg/h) |
---|---|---|---|---|
HP1: TiCr1.9 | 15–1474 | 4–4 | 1.60–1.55 | 28.7–2866 |
HP2: (Ti0.97Zr0.03)1.1Cr1.6Mn0.4 | 16–1550 | 4–4 | 1.20–1.20 | 51.3–5127 |
HP3: Ti1.1CrMn | 14–1444 | 8–8 | 1.60–1.50 | 53.0–5297 |
HP4: TiCrMn0.4Fe0.4V0.2 | 14–1565 | 10–10 | 1.30–1.20 | 62.7–6271 |
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Corgnale, C.; Sulic, M. Techno-Economic Analysis of High-Pressure Metal Hydride Compression Systems. Metals 2018, 8, 469. https://doi.org/10.3390/met8060469
Corgnale C, Sulic M. Techno-Economic Analysis of High-Pressure Metal Hydride Compression Systems. Metals. 2018; 8(6):469. https://doi.org/10.3390/met8060469
Chicago/Turabian StyleCorgnale, Claudio, and Martin Sulic. 2018. "Techno-Economic Analysis of High-Pressure Metal Hydride Compression Systems" Metals 8, no. 6: 469. https://doi.org/10.3390/met8060469