Numerical Characterization of the Flow Dynamics and COP Estimation of a Binary Fluid Ejector Ground Source Heat Pump Cooling System
Abstract
:1. Introduction
2. Refrigeration COP Calculation
3. Ejector Geometry and CFD Simulations
4. Results and Discussion
4.1. Binary Fluid Pair Assay and Ranking
4.2. Entrainement Ratio Using Single Fluid Ejector
4.3. CFD Simulations for Selected Binary Fluid Candidates
5. Conclusions
Funding
Acknowledgments
Conflicts of Interest
Nomenclature
Acronyms | |
BFE GSHP | Binary Fluid Ejector Ground Source Heat Pump |
COP | Coefficient of Performance |
CFD | Computational Fluid Dynamics |
CR | Compression Ratio |
TKE | Turbulent Kinetic Energy |
MS | Mixing section |
TS | Throat section |
DS | Diffuser section |
M1 | Molecular mass of the primary fluid |
M2 | Molecular mass of the secondary fluid |
Symbols | |
TBoil | Boiler Saturation Temperature |
TEvap | Evaporator Saturation Temperature |
TCond | Condenser Saturation Temperature |
QS,Evap | Refrigeration capacity |
QP,Boil | Heat load for Boiler |
QP,Cond | Heat rejection from Condenser |
Enthalpy of vaporization in the Evaporator (secondary fluid) | |
Enthalpy of vaporization in the Boiler (primary fluid) | |
Average specific heat capacity of primary fluid | |
Average specific heat capacity of secondary fluid | |
Mass entrainment ratio |
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Primary Fluid | Secondary Fluid | M1 (g/mol) | M2 (g/mol) | M1/M2 | PBoil (Mpa) | PEvap (Kpa) | PCond (Kpa) | CR | fh |
---|---|---|---|---|---|---|---|---|---|
difluorodiiodomethane | methanol | 304.00 | 32.04 | 9.49 | 1.03 | 12.31 | 29.10 | 2.36 | 7.68 |
bromofluoroiodomethane | methanol | 238.83 | 32.04 | 7.45 | 0.80 | 12.31 | 27.00 | 2.19 | 6.37 |
bromotrichloromethane | methanol | 198.00 | 32.04 | 6.18 | 0.83 | 12.31 | 28.00 | 2.27 | 4.92 |
Chloroiodomethane | acetonitrile | 176.38 | 41.05 | 4.30 | 0.87 | 8.91 | 17.70 | 1.99 | 2.90 |
ethylene, 1,1-dibromo | acetonitrile | 185.85 | 41.05 | 4.53 | 1.02 | 8.91 | 17.50 | 1.96 | 2.80 |
2-chloropropenoyl fluoride | methanol | 108.50 | 32.04 | 3.39 | 1.20 | 12.31 | 29.00 | 2.36 | 2.47 |
3-methylthiophene | methanol | 98.17 | 32.04 | 3.06 | 0.70 | 12.31 | 25.50 | 2.07 | 2.34 |
methanedithiol | methanol | 80.17 | 32.04 | 2.50 | 1.20 | 12.31 | 29.00 | 2.36 | 2.12 |
1-methoxycyclopentene | methanol | 98.14 | 32.04 | 3.06 | 0.77 | 12.31 | 25.20 | 2.05 | 1.97 |
Primary Fluid | Secondary Fluid | M1 (g/mol) | M2 (g/mol) | M1/M2 | PEvap (KPa) | PCond (KPa) | PBoil (MPa) | TBoil (°C) | CR | (g/s) | (g/s) | ER | fh | COP |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Difluorodiiodomethane | methanol | 304.00 | 32.04 | 9.50 | 12.31 | 29.10 | 1.03 | 200 | 2.36 | 25 | 5.2 | 0.21 | 7.68 | 1.60 |
Bromofluoroiodomethane | methanol | 238.83 | 32.04 | 7.45 | 12.31 | 27.00 | 1.00 | 220 | 2.19 | 21.1 | 5.6 | 0.26 | 6.37 | 1.69 |
Bromotrichloromethane | methanol | 198.00 | 32.04 | 6.19 | 12.31 | 28.00 | 0.83 | 210 | 2.27 | 16.2 | 5.9 | 0.36 | 4.92 | 1.79 |
Chloroiodomethane | acetonitrile | 176.38 | 41.05 | 4.30 | 8.90 | 17.70 | 0.70 | 180 | 1.99 | 13.3 | 4.5 | 0.34 | 3.00 | 1.02 |
ethylene, 1,1-dibromo | acetonitrile | 185.85 | 41.05 | 4.53 | 8.90 | 17.50 | 0.70 | 170 | 1.97 | 13.7 | 4.4 | 0.32 | 2.80 | 0.90 |
2-chloropropenoyl fluoride | methanol | 108.50 | 32.04 | 3.39 | 12.31 | 29.00 | 1.20 | 200 | 2.36 | 17.5 | 6.4 | 0.37 | 2.36 | 0.86 |
3-methylthiophene | methanol | 98.17 | 32.04 | 3.06 | 12.31 | 25.50 | 0.80 | 204 | 2.07 | 10.8 | 6.3 | 0.58 | 2.34 | 1.37 |
Methanedithiol | methanol | 80.17 | 32.04 | 2.50 | 12.31 | 29.00 | 1.20 | 200 | 2.36 | 13.3 | 7.05 | 0.53 | 2.02 | 1.07 |
1-methoxycyclopentene | methanol | 98.14 | 32.00 | 3.07 | 12.31 | 25.20 | 0.77 | 200 | 2.05 | 10.6 | 6.53 | 0.62 | 1.97 | 1.21 |
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El Hassan, M. Numerical Characterization of the Flow Dynamics and COP Estimation of a Binary Fluid Ejector Ground Source Heat Pump Cooling System. Fluids 2022, 7, 250. https://doi.org/10.3390/fluids7070250
El Hassan M. Numerical Characterization of the Flow Dynamics and COP Estimation of a Binary Fluid Ejector Ground Source Heat Pump Cooling System. Fluids. 2022; 7(7):250. https://doi.org/10.3390/fluids7070250
Chicago/Turabian StyleEl Hassan, Mouhammad. 2022. "Numerical Characterization of the Flow Dynamics and COP Estimation of a Binary Fluid Ejector Ground Source Heat Pump Cooling System" Fluids 7, no. 7: 250. https://doi.org/10.3390/fluids7070250