Presentation given by the student I tutored for a project I proposed in the context of Renewable Energy Masters

1. 
Thesis Defense
CHEMALY Chantal
UNIVERSITE LIBANAISE - FACULTE DE GENIE
&
UNIVERSITE SAINT-JOSEPH
FACULTE 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 Adel
Dr. YOUNES Rafic October 18, 2016
1

2. Outline
 Introduction - Scope of thesis
 Methodology
 Results
 Sensibility Study
 Application
 Conclusion & Future Work
2

3. Outline
 Introduction - Scope of thesis
 Methodology
 Results
 Sensibility Study
 Application
 Conclusion & Future Work
3

4. Introduction 4
A Solution Tri-generation
High efficiency
Environmental protection
Economic benefits
F= Biomass

5. Outline
 Introduction - Scope of thesis
 Methodology
 Results
 Sensibility Study
 Application
 Conclusion & Future Work
5

6. Methodology 6
Biomass flow rate = 57 t/h
Biomass moisture content = 0.49%

7. Methodology 7
HHV=17.919MJ/Kg
Efficiency = 70%
Energy produced = (biomass flow x HHV) x burner efficiency

8. 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).

9. Methodology 9
Input Steam Pressure = 90 bar
Output 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).

10. Methodology 10
Output Pressure = 0.7 bar Output Temperature = 150°C Reheat = 220°C
Output 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

11. 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.

12. 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).

13. Outline
 Introduction - Scope of thesis
 Methodology
 Results
 Sensibility Study
 Application
 Conclusion & Future Work
13

14. Results 14
0
10
20
30
40
50
60
0 0.2 0.4 0.6 0.8 1 1.2
EnergyProduced(MW)
VH vs LP
Total Energy Produced for Diferent Values of VHvsLP
Vcool=1 Vrecovery=1
Vcool=0 Vrecovery=1
Vcool=1 VRecovery=0
Vcool=0 Vrecovery=0

15. Outline
 Introduction - Scope of thesis
 Methodology
 Results
 Sensibility Study
 Application
 Conclusion & Future Work
15

16. Results 16
0
20
40
60
80
100
120
MP Turbine Power LP Turbine Power Hot Water Cold Total Energy Produced
EnergyProduced(MW)
0
20
40
60
80
100
120
MP Turbine Power LP Turbine Power Hot Water Cold Total Energy Produced
EnergyProduced(MW)
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)
VHvsLP=0
VHvsLP=1

17. Outline
 Introduction - Scope of thesis
 Methodology
 Results
 Sensibility Study
 Application
 Conclusion & Future Work
17

18. Results 18
Energy type Energy sales
Electric power 87 $/MW
Heating 8.4 $/MW
Cold 24.9 $/MW

19. Results 18
VHvsLP=0
VHvsLP=1
0
1000
2000
3000
4000
5000
MP Turbine Power LP Turbine Power Hot Water Cold Total Energy
Produced
EnergySales($)
0
1000
2000
3000
4000
5000
MP Turbine Power LP Turbine Power Hot Water Cold Total Energy Produced
EnergySales($)
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)

20. Outline
 Introduction - Scope of thesis
 Methodology
 Results
 Sensibility Study
 Application
 Conclusion & Future Work
19

21. 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

22. 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
energy
58 MW 44.2 MW
Variables Values taken
VHvsLP 0.554
VCool 1
VFGR 1
Biomass flow 26.576 t/h
Application : Case 1

23. 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

24. Results 23
Application : Case 2
Energy
type
Energy
required
Energy
produced
Delta E
Price of
energy
supplemen
ted from
market*
Total
electric
power
13.5 MW
13.500
MW
0 $0
Heating 13 MW
13.000
MW
0 $0
Cold 18 MW
17.786
MW
0.214 $4.912
Total
energy
58 MW
44.286
MW
Variables Values taken
VHvsLP 0.5442
VCool 1
VFGR 1
Biomass flow 26.647 t/h

25. Outline
 Introduction - Scope of thesis
 Methodology
 Results
 Sensibility Study
 Application
 Conclusion & Future Work
24

26. Conclusion & Future Work 25
Further
Studies
Greenhouse
gas
emissions
Running
Cost
Installation
cost
CCHP system with large potential of economical efficiency and energy savings

27. Questions 26