Enhancing the Efficiency, Productivity, Stabilizing Operating Conditions and Pollution Reduction of Benghazi North Power Plant by Solar Cooling
Keywords:
Solar Cooling, Plant Efficiency, Renewable Energy, Pollution Reduction, Power Production.Abstract
Benghazi North power plant is subjected to large ambient air and seawater temperature fluctuations throughout the year, adversely impacting performance and generated power, consequently increasing CO₂ emission rates. Stabilizing the inlet air temperature and controlling the condenser inlet cooling water temperature under design conditions enhances and maintains performance and efficiency year-round.
A single-effect water-lithium bromide absorption cycle powered by a solar parabolic trough collector was implemented. For efficient operation during non-sunny periods, an insulated thermal storage tank stores the thermal energy of the working medium, with an assisting heat supply from HRSG downstream exhaust gases to compensate any temperature drop inside the tank, which must not fall below 80°C to ensure effective cooling system operation.
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[1] Amir A. Zadpoor, Ali H. Golshan, ''Performance improvement
of a gas turbine cycle by using a desiccant-based evaporative
cooling system'', Available at: Science Direct
www.elsevier.com/locate/energy. (Accessed 14 December
2018).
[2] Suleiman, Rekiyat B. Omohu, '' Modeling And Simulation Of
A Solar Powered Adsorption Refrigeration System'', June 2011.
[3] Ashraf Khalil, Zakaria Rajab, Ali Asheibi. The Economic
Feasibility of Photovoltaic Systems for Electricity Production in
Libya.Hammamet, Tunisia : s.n., 2016. The 7th International
Renewable Energy Congress (IREC'2016). pp. 1-6.
[4] Ibrahim M. Saleh" Prospects of Renewable Energy in Libya" ,
International Symposium on Solar Physics and Solar Eclipses
(SPSE) 2006.
[5] Abdulwahab Misherghi," Renewable Energy in Libya:
(Potentials, Current Situation and Way forward), Berlin -
Germany, Monday 26thof June2012.
[6] Lawrence Livermore National Laboratory, "Energy Flow
Charts". 2016 [cited 2017 Dec 15]; Available from:
[7] Institute, G.C. Power Plant Efficiency. 2018 [cited 2018 Feb
11]; Available from:
https://hub.globalccsinstitute.com/publications/capturingco2/power-plant-efficiency.
[8 ] dos Santos AP, Andrade CR, Zaparoli EL. "Comparison of
different gas turbine inlet air cooling methods". World
Academy of Science, Engineering and Technology. 2012 Jan
26;61:40-5.
[9] Ibrahim TK, Rahman MM, Abdalla AN." Improvement of gas
turbine performance based on inlet air cooling systems: A
technical review". International Journal of Physical Sciences.
2011 Feb 18;6(4):620-7.
[10 ] Raja FA, Christober SB, Rajan A, Thiagarajan TC."
Frequency Excursion and Temperature control of Combined
Cycle Gas Plant Including SMES". International Journal of
Computer and Electrical Engineering. 2010 Dec 1;2(6):1059.
[11] Tiwari AK, Hasan MM, Islam M." Effect of Operating
Parameters on the Performance of Combined Cycle Power
Plant". 1 (7) 2012.
[12] Muammer Alus, Mohamed Elrawemi, Fathi Kawan, "The
Effect of the Condenser Inlet Cooling Water Temperature on
the Combined Cycle Power Plant Performance", World Wide
Journal of Multidisciplinary Research and Development,
WWJMRD 2017; 3(10): 206-21.
[13] Waiel Kamal,etal " Effect of Inlet Air Cooling on Gas
Turbine Performance" Bandar Seri Iskandar, 31750 Tronoh,
Perak, Malaysia University of Technology Petronas no date.
[14] Kamal, S. N. O., Salim, D. A., Fouzi, M. S. M., Khai, D.T.
H., and Yusof, M. K. Y.,"Feasibility study of turbine inlet air
cooling using mechanical chillers in malaysia climate",
International Conference on Alternative Energy in Developing
Countries and Emerging Economies AEDCEE, Bangkok,
Thailand, 25-26 May, 2017.
[15] A.E.M. Nasser, M.A. EI-Kalay, "A heat-recovery cooling
system to conserve energy in gas-turbine power stations in the
Arabian Gulf", Appl. Energy 38 (1991) 133–142.
[16] Johansson, T.B. "Renewable Energy, Sources for Fuels and
Electricity"; Island Press: Washington, DC, USA, 1993;Chapter
5, pp. 234–235.
[ 17] Zhu, G., Neises, T., Turchi, C., Bedilion, R.
"Thermodynamic evaluation of solar integration into a natural
gas combined cycle power plant". Renew. Energy 2015, 74,
815–824.
[18 ] Lewis, N. "Toward cost-effective solar energy use". Science
2007, 315, 798–801.
[19] Behar, O.; Kellaf, A.; Mohamedi, K.; Belhamel, M.
"Instantaneous performance of the first Integrated Solar
Combined Cycle System in Algeria". Energy Procedia 2011, 6,
185–193.
[20]Rovira, A.; Montes, M.J.; Varela, F.; Gil, M. "Comparison of
Heat Transfer Fluid and Direct Steam Generation technologies
for Integrated Solar Combined Cycles". Appl. Therm. Eng.
2013, 52, 264–274.
[21] Montes, M.J.; Rovira, A.; Muñoz, M.; Martínez-Val, J.M.
"Performance analysis of an Integrated Solar Combined Cycle
using Direct Steam Generation in parabolic trough collectors".
Appl. Energy 2011, 88, 3228–3238.
[22] Baghernejad, A.; Yaghoubi, M. "Exergoeconomic analysis
and optimization of Integrated Solar Combined Cycle System
(ISCCS) using genetic algorithm". Energy Convers. Manag.
2011, 52, 2193–2203.
[23] Baghernejad, A.; Yaghoubi, M. "Exergy analysis of an
integrated solar combined cycle system". Renew. Energy2010,
35, 2157–2164.
[24] Bakos, G.C.; Parsa, D. "Technoeconomic assessment of an
integrated solar combined cycle power plant in Greece using
line-focus parabolic trough collectors". Renew. Energy 2013,
60, 598–603.
[25] Li, Y.; Yang, Y. "Thermodynamic analysis of a novel
integrated solar combined cycle". Appl. Energy 2014, 122,133–
142.
[26] Li, Y.; Yang, Y. "Impacts of solar multiples on the
performance of integrated solar combined cycle systems with
two direct steam generation fields". Appl. Energy 2015, 160,
673–680.
[27] Popov, D. "An option for solar thermal repowering of fossil
fuel fired power plants". Sol. Energy 2011, 85,344–349.
[28] Popov, D." Innovative solar augmentation of gas turbine
combined cycle plants". Appl. Therm. Eng. 2014, 64,40–50.
[29] Liqiang Duan and Zhen Wang" Performance Study of a
Novel Integrated Solar Combined Cycle System"Energies
2018, 11, 3400; doi:10.3390/en11123400 .
[30] Ahmed Ali Abdel Rahman "Boosting Gas Turbine
Combined Cycles in Hot Regions Using Inlet Air Cooling
including Solar Energy",9th International Conference on
Applied Energy, ICAE2017, 21-24 August 2017, Cardiff, UK.
[31] S. Popli, P. Rodgers, V. Eveloy, "Gas turbine efficiency
enhancement using waste heat powered absorption chillers in
the oil and gas industry", Appl. Therm. Eng. 50 (2013) 918–
931.
[32] Erkinjon Matjanov "Gas turbine efficiency enhancement
using absorption chiller. Casestudy for Tashkent CHP" Energy.
192 (2020) 116625. Elsevier Ltd.
[33] V.C. Okafor " Thermodynamic Analysis Of Compressor
Inlet Air Precooling Techniques Of A Gas Turbine Plant
Operational In Nigeria Energy Utility Sector"
International Journal of Engineering Science Technologies Vol.
4(2): March, 2020.
[34] A. Ettajuri et.al " Unsteady Thermal performance of Solar
Parabolic Trough Collector Integrated With HRSG Exhaust
Gases Under Different Loading Conditions of Benghazi
North Power Plant " Master of Science University of Benghazi
Thesis April 2021.
[35] Aziza Salem Abdelatif" Theoretical Investigation of the Gas
Turbine Performance Enhancement by Intake Air Cooling
Using An Absorption Chiller", The Libyan Academy Benghazi
- Libya .2018.
[36] Erkinjon Matjanov "Gas turbine efficiency enhancement
using absorption chiller. Casestudy for Tashkent CHP" Energy.
192 (2020) 116625. Elsevier Ltd.
[37]Ameri, M. and S.H. Hejazi, "The study of capacity
enhancement of the Chabahar gas turbine installationusing an
absorption chiller". Applied Thermal Engineering, 2004. 24(1):
p. 59-68.
[38] Giuma M. Fellah., Effect of Ambient Temperature on The
Thermodynamic Performance of A combined Cycle", Journal
of Engineering Research (Al-Fateh University) Issue (13)
March 2010.
[39]Nasser, A.E.M. and M.A. Elkalay, "A heat-Recovery Cooling
System to Conserve Energy in Gas-Turbine Power-Stations in
The Arabian Gulf".Applied Energy, 1991. 38(2): p. 133-142.).
[40] Santos AP, Andrade CR. "Analysis of gas turbine
performance with inlet air cooling techniques applied to
Brazilian sites". Journal of Aerospace Technology and
Management. 2012 Sep;4(3):341-353.
124
[41] Q.M. Jaber et al, "Assessment of power augmentation from
gas turbine power plants using different inlet air cooling
systems" ,Jordan J. Mech. Ind. Eng. 1 (1) (2007) 7–15.
[42] Abdel Moneim, S.A., ״ No-Load Unsteady- State Thermal
Performance of Parabolic Trough Solar Collectors 5 , ״th
International Conference on Energy and Enviroument, Cairo,
Egypt, 1996.
[43] Soteris kalogirou "Solar energy engineering" 1st. ED.,
Elsevier Inc. 2009.