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Thesis Defense
CHEMALY Chantal
UNIVERSITE LIBANAISE - FACULTE DE GENIE&
UNIVERSITE SAINT-JOSEPHFACULTE D’INGENIERIE– DEPARTEMENT DES
ETUDES DOCTORALES
STUDY OF THE POSSIBILITIES OF A TRI-GENERATION PRODUCTION: HEAT, COLD AND
ELECTRICITY, FROM BIOMASS
Committee Members:Dr. BECHRA Rami (Advisor)Dr. MOURTADA AdelDr. YOUNES Rafic October 18, 2016
1
Outline
Introduction - Scope of thesis
Methodology
Results Sensibility Study Application
Conclusion & Future Work
2
Outline
Introduction - Scope of thesis
Methodology
Results Sensibility Study Application
Conclusion & Future Work
3
Introduction 4
A Solution Tri-generation
High efficiencyEnvironmental protectionEconomic benefits
F= Biomass
Outline
Introduction - Scope of thesis
Methodology
Results Sensibility Study Application
Conclusion & Future Work
5
Methodology 6
Biomass flow rate = 57 t/hBiomass moisture content = 0.49%
Methodology 7
HHV=17.919MJ/KgEfficiency = 70%
Energy produced = (biomass flow x HHV) x burner efficiency
Methodology 8
Operating Pressure = 90 bar*Superheating Temperature = 553.31°C*
Total steam produced = 149 t/h
* Bechara, R. (2015). Methodology for the designof optimal processes: application to sugarcane conversion processes (Doctoral dissertation, Université Claude Bernard-Lyon I).
Methodology 9
Input Steam Pressure = 90 barOutput Steam Pressure = 3 bar*
Output Steam temperature = 150 °C*Total Power produced = 25 MW (Steam turbine calculator)
* Bechara, R. (2015). Methodology for the designof optimal processes: application to sugarcane conversion processes (Doctoral dissertation, Université Claude Bernard-Lyon I).
Methodology 10
Output Pressure = 0.7 bar Output Temperature = 150°C Reheat = 220°COutput water temperature = 50°C Efficiency of exchange = 0.8
Power produced = 8MW (for VHvsLP=1)Hot water Produced = 2517.5 t/h (for VHvsLP=0)
VHvsLP between 0 & 1
Methodology 11
Input Temperature= 90°C*COP=1.4*
Cold produced=Heat at the input of the chiller x Cooling Efficiency
VCool between 0 & 1
* Maraver, D., Sin, A., Royo, J., & Sebastián, F. (2013). Assessment of CCHP systems based on biomass combustion for small-scale applications through a review of the technology and analysis of energy efficiency parameters. Applied energy, 102, 1303-1313.
Methodology 12
Heat transfer efficiency = 0.8*Cold produced with flue gas recovery = 54.966 MW
VFGR between 0 & 1
* Bechara, R. (2015). Methodology for the designof optimal processes: application to sugarcane conversion processes (Doctoral dissertation, Université Claude Bernard-Lyon I).
Outline
Introduction - Scope of thesis
Methodology
Results Sensibility Study Application
Conclusion & Future Work
13
Results 14
0 0.2 0.4 0.6 0.8 1 1.20
10
20
30
40
50
60
Total Energy Produced for Diferent Values of VHvsLP
Vcool=1 Vrecovery=1 Vcool=0 Vrecovery=1
Vcool=1 VRecovery=0 Vcool=0 Vrecovery=0
VH vs LP
Ener
gy P
rodu
ced
(MW
)
Outline
Introduction - Scope of thesis
Methodology
Results Sensibility Study Application
Conclusion & Future Work
15
Results 16
MP Turbine Power LP Turbine Power Hot Water Cold Total Energy Produced
0
20
40
60
80
100
120
Ener
gy P
rodu
ced
(MW
)
MP Turbine Power LP Turbine Power Hot Water Cold Total Energy Produced0
20
40
60
80
100
120
Case1: without cold production and without flue gas recovery (VCool=0 & VFGR=0)Case2: with cold production and without flue gas recovery (VCool=1 & VFGR=0)Case3: with cold production and with flue gas recovery (VCool=1 & VFGR=1)
Ener
gy P
rodu
ced
(MW
)
VHvsLP=0
VHvsLP=1
Outline
Introduction - Scope of thesis
Methodology
Results Sensibility Study Application
Conclusion & Future Work
17
Results 18
Energy type Energy sales
Electric power 87 $/MW
Heating 8.4 $/MW
Cold 24.9 $/MW
Results 18
VHvsLP=0
VHvsLP=1
MP Turbine Power LP Turbine Power Hot Water Cold Total Energy Produced
0
1000
2000
3000
4000
5000
Ener
gy S
ales
($)
MP Turbine Power LP Turbine Power Hot Water Cold Total Energy Produced
0
1000
2000
3000
4000
5000
Case1: without cold production and without flue gas recovery (VCool=0 & VFGR=0)Case2: with cold production and without flue gas recovery (VCool=1 & VFGR=0)Case3: with cold production and with flue gas recovery (VCool=1 & VFGR=1)
Ener
gy S
ales
($)
Outline
Introduction - Scope of thesis
Methodology
Results Sensibility Study Application
Conclusion & Future Work
19
Results 20
Application : Case 1
Biomass flow rate is an additional variable
Energy type Requirements Energy sales
Electric power 13.5 MW 87 $/MW
Heating 13 MW 8.4 $/MW
Cold 18 MW 24.9 $/MW
Results 21
Type of
energy
Energy
required
Energy
produced
Delta
E
Price of energy
supplemented
from market*
Total
electric
power
13.5 MW 13.5 MW 0 $0
Heating 13 MW 12.7 MW 0.308 $2.6
Cold 18 MW 18. MW 0 $0
Total
energy58 MW 44.2 MW
Variables Values taken
VHvsLP 0.554
VCool 1
VFGR 1
Biomass flow 26.576 t/h
Application : Case 1
Results 22
Energy type Requirements Energy sales
Electricity 13.5 MW 87 $/MW
Heating 13 MW 30 $/MW
Cold 18 MW 23 $/MW
Application : Case 2
Results 23
Application : Case 2
Energy type
Energy required
Energy produced
Delta E
Price of energy
supplemented from market*
Total electric power
13.5 MW13.500
MW0 $0
Heating 13 MW13.000
MW0 $0
Cold 18 MW17.786
MW0.214 $4.912
Total energy
58 MW44.286
MW
Variables Values taken
VHvsLP 0.5442
VCool 1
VFGR 1
Biomass flow 26.647 t/h
Outline
Introduction - Scope of thesis
Methodology
Results Sensibility Study Application
Conclusion & Future Work
24
Conclusion & Future Work 25
Further Studies
Greenhouse gas
emissions
Running Cost
Installation cost
CCHP system with large potential of economical efficiency and energy savings
Questions 26
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