A Financial Approach to Evaluate an Optimized Combined Cooling, Heat and Power System

Shahab Bahrami, Farahbakhsh Safe

Electrical Engineering Department, Sharif University of Technology, Tehran, Iran.

DOI: 10.4236/epe.2013.55036                

Abstract

Iran’s removing subsidy from energy carrier in four years ago leads to spike electricity price dramatically. This abrupt change increases the interest on distributed generation (DG) because of its several benefits such as lower electricity generation price. In Iran among all type of DGs, because of wide natural gas network infrastructure and several incentives that government legislated to support combined cooling, heat and power (CCHP) investors, this type of technology is more prevalent in comparison with other technologies. Between existing CCHP technologies, certain economic choices are to be taken into account. For different buildings with different load curves, suitable size and operation of CCHP should be calculated to make the project more feasible. If CCHP does not well suited for a position, then the whole energy efficiency would be plunged significantly. In this paper, a model to find the optimal size and operation of CCHP and auxiliary boiler for any users is proposed by considering an integrated view of electricity and natural gas network using GAMS software. Then this method is applying for a hospital in Tehran as a real case study. Finally, by applying COMFAR III software, useful financial parameters and sensitivity analysis are calculated.

Keywords

Combined Cooling Heat and Power (CCHP); Energy Hub; Optimal Size; Financial Analysis

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	A.Sheikhi, A. M. Ranjbar, M. Mahmoody and F. Safe, “CHP Optimize Selection Methodology for an Energy Hub System,” 10th International Conference on Environment and Electrical Engineering, Rome, 8-11 May 2011, pp. 1-5.
[2]	US EPA, “Inventory of US Greenhouse Gas Emissions and Sinks: 1990-2001,” EPA 430-R-03-004, US Environ mental Protection Agency, Washington DC, 2003.
[3]	J. McDonald, “Adaptive Intelligent Power Systems: Active Distribution Networks,” Energy Policy, Vol. 36, No. 12, 2008, pp. 4346-4351. doi:10.1016/j.enpol.2008.09.038
[4]	V. H. Mendez, J. Rivier, J. I. De La Fuente, T. Gomez, J. Arceluz and J. Marin, “Impact of Distributed Generation on Distribution Investment Deferral,” International Journal of Electrical Power & Energy Systems, Vol. 28, No. 4, 2006, pp. 244-252. doi:10.1016/j.ijepes.2005.11.016
[5]	R. Billinton and R. N. Allen, “Reliability Evaluation of Engineering Systems, Conceptand Techniques,” 2nd Edition, Plenum Press, New York, 1992. doi:10.1007/978-1-4899-0685-4
[6]	R. Graham and W. Chow, “Technical and Economic Assessment of Combined Heat and Power Technologies for Commercial Customer Applications,” EPRI Project Manager, 2003.
[7]	H. Cho, R. Luck, S. D. Eksioglu and L. M. Chamra, “Cost Optimized Real Time Operationof CHP System,” Energy and Buildings, Vol. 41, No. 4, 2009, pp. 445-451. doi:10.1016/j.enbuild.2008.11.011
[8]	A. Sheikhi, B. Mozafari and A. M. Ranjbar, “CHP Optimize Selection Methodology for a Multicarrier Energy System,” Power Tech Conference, Trondheim, 19-23 June 2011, pp. 1-7.
[9]	J. Teng, Y. Liu, C. Chen and C.-F. Chen, “Value-Based Distributed Generator Placements for Service Quality Improvements,” International Journal of Electrical Power and Energy Systems, Vol. 29, No. 3, 2007, pp. 268-274. doi:10.1016/j.ijepes.2006.07.008
[10]	A. M. Sheikhi and R. H. Oraee, “Financial Analysis and Optimal Size and Operation for a Multicarrier Energy System,” Energy and Buildings, Vol. 48, 2012, pp. 71-78. doi:10.1016/j.enbuild.2012.01.011
[11]	A. Sheikhi and A. M. Ranjbar, “Optimal Dispatch of a Multiple Energy Carrier System Equipped with a CCHP,” ICREPQ Conference, Las Palmas de Gran Canaria, 2011.
[12]	P. J. Mago and L. M. Chamra, “Analysis and Optimization of CCHP Systems Based on Energy, Economical, and Environmental Considerations,” Energy and Building, Vol. 41, No. 10, 2009, pp. 1099-1106. doi:10.1016/j.enbuild.2009.05.014
[13]	R. Hashemi, “A Developed Offline Model to Optimal Operation of Combined Cooling, Heating and Power Systems,” IEEE Transaction on Energy Conversion, Vol. 24 No. 1, 2009, pp. 222-229. doi:10.1109/TEC.2008.2002330
[14]	P. M. Costa and M. A. Matos, “Economic Analysis of Microgrids including Reliability Aspect,” 9th International Conference on Probabilistic Methods Applied to Power System, Stockholm, 11-15 June 1, 2006, pp. 1-15. doi:10.1109/PMAPS.2006.360236
[15]	H. Asano and S. Bando, “Operational Planning Method and Economic Analysis of Microgrid with Intermittent Renewable Energy and Battery Storage,” 29th IAEE International Conference, Potsdam, 7-10 June 2006.
[16]	A. R. Abdelaziz and W. M. Ali, “Dispersed Generation Planning Using a New Evolutionary Approach,” IEEE Bologna Power Tech Conference Proceedings, Bologna, 23-26 June 2003, 5 Pages. doi:10.1109/PTC.2003.1304336
[17]	R. Dugan, T. E. McDermott and G. J. Ball, “Planning for Distributed Generation,” IEEE Industry Applications Magazine, Vol. 7, No. 2, 2001, pp. 80-88. doi:10.1109/2943.911193
[18]	H. M. Groscurth, T. Bruckner and R. Kümmel, “Modeling of Energy Service Supply System,” Energy, Vol. 20, No. 9, 1995, pp. 941-958. doi:10.1016/0360-5442(95)00067-Q
[19]	I. Bouwmans and K. Hemmes, “Optimising Energy Systems—Hydrogen and Distributed Generation,” 2nd International Symposium on Power System Market Aspects, Stockholm, 2-4 October 2002.
[20]	R. H. Lasseter and P. Piagi, “Microgrid: A Conceptual solution,” Proceedings of IEEE 35th Annual Power Electronics Specialists Conference (PESC), Aachen, 20-25 June 2004, pp. 1-6.
[21]	R. Frik and P. Favre-Perrod, “Proposal for a Multifunctional Energy Bus and Its Interlink with Generation and Consumption, Diploma Thesis,” Power Systems and High Voltage Laboratories, Zurich, 2004.
[22]	G. Andersson, “A Modeling Framework for Future Energy Systems,” Project Home Page, 2006, http://www.eeh.ee.ethz.ch/psl/research/vofen.html
[23]	P. Favre-Perrod, M. Geidl, G. Koeppel and B. Klockl, “A Vision of Future Energy Network,” IEEE Inaugural Conference and Exposition in Africa, Durban, 11-15 July 2005, pp. 13-17.
[24]	K. Hemmes, J. L. Zachariah-Wolf and G. Andersson, “Towards Multi-Source Multi-Product Energy Systems,” Hydrogen Energy, Vol. 32, No. 10-11, 2007, pp. 1332 1338.
[25]	M. Geidl, “Integrated Modeling and Optimization of Multi Carrier Energy Systems,” PhD Thesis, Eidgenossische Technische Hochschule Zürich, Zürich, 2007.
[26]	G. Koppl and G. Andersson, “Reliability Modeling of Multicarrier Energy Systems,” Energy, Vol. 34, No. 3, 2009, pp. 235-244. doi:10.1016/j.energy.2008.04.012
[27]	M. D. Galus and G. Andersson, “Power System Considerations of Plug-In Hybrid Electric Vehicles Based on a Multi Energy Carrier Model,” IEEE Power & Energy Society General Meeting, Calgary, 26-30 July 2009, pp. 1-8.
[28]	F. Kienzle, P. Ahcin and G. Andersson, “Valuing Investments in Multi-Energy Conversion, Storage, and Demand-Side Management Systems under Uncertainty,” IEEE Transaction on Sustainable Energy, Vol. 2, No. 2, 2011, pp. 194-202.
[29]	M. Arnol and G. Andersson, “Investigating Renewable Infeed in Residential Area Applying Model Predictive Control,” IEEE Power & Energy Society General Meeting, Minneapolis, 25-29 July 2010, pp. 1-8.
[30]	T. Krause, F. Kienzle, Y. Liu and G. Anderssson, “Inter Connected National Energy Systems Using an Energy Hub Approach,” IEEE PowerTech, Trondheim, 19-23 June 2011, pp. 1-7.
[31]	M. Schuzle, L. Friedrich and M. Gautschi, “Modeling and Optimization of Renewables: Applying the Energy Hub Approach,” IEEE Conference on Sustainable Energy Tech nologies, Singapore City, 24-27 November 2008, pp. 83-88.
[32]	A. Parisio, C. D. Vecchio and A. Vaccaro, “A Robust Optimization Approach to Energy Hub Management,” Electrical Power and Energy Systems, Vol. 42, No. 1, 2012, pp. 98-104.
[33]	L. Carradore and R. Turri, “Modeling and Simulation of Multi-Vector Energy Systems,” IEEE Conference on Power Tech, Bucharest, 28 June-2 July 2009, pp. 1-7.
[34]	E. M Robertson, et al., “Outline for an Integrated Multiple Energy Carrier Model of the UK Energy Infrastructure,” 44th International Universities Power Engineering Conference (UPEC), Glasgow, 1-4 September 2009, pp. 1-5.
[35]	L. Forbes, S. T. Galloway and G. W. Ault, “An Approach for Modeling a Decentralized Energy System,” 45th International Universities Power Engineering Conference (UPEC), Cardiff, 31 August-3 September 2010, pp. 1-5.
[36]	L, M, Ramirez-Elizondo and G. C. Paap, “Unit Commitment in Multiple Energy Carrier Systems,” IEEE Conference, Starkville, 4-6 October 2009, pp. 1-6.
[37]	V. Velez, L. Ramirez-Elizendo and G. C. Paap, “Control Strategy for an Autonomous Energy System with Electricity and Heat Flows,” IEEE Conference, Hersonissos, 25-28 September 2011, pp. 1-6.
[38]	F. Syed, “Analysis of a Clean Energy Hub Interfaced with a Fleet of Plug-In Fuel Cell Vehicles,” Master Thesis, University of Waterloo, Waterloo, 2011.
[39]	M. Setayeshnazar and M. R. Haghifam, “Multi Objective Electric Distribution System Expansion Planning Using Hybrid Energy Hub Concept,” Electric Power Systems Research, Vol. 79, No. 6, 2009, pp. 899-911. doi:10.1016/j.epsr.2008.12.002
[40]	M. Geidl, “A Green Field Approaches for Future Power Systems,” Cigre Session 41, Paris, 2006.
[41]	A. Sheikhi, A. M. Ranjbar, H. Oraee and A. R. Moshari, “Optimal Operation and Size for an Energy Hub with CCHP,” Energy and Power Engineering Journal, Vol. 3, No. 5, 2011, pp. 641-649.
[42]	A. K. Basu and S. Chowdhury,” Impact of Strategic Deployment of CHP-Based DERs on Microgrid Reliability,” IEEE Transactions on Power Delivery, Vol. 25, No. 3, 2010, pp. 1697-1705.
[43]	D. G. Newnan, T. G. Eschenbach and J. P. Lavelle, “Engineering Economic Analysis,” 9th Edition, Oxford University Press, Oxford, 2004.
[44]	M. Y. Khan, “Theory & Problems in Financial Management,” McGraw Hill Higher Education, New York, 1993.
[45]	M. A. Main, “Project Economics and Decision Analysis, Volume I: Deterministic Models,” 2nd Edition, PennWell Publishing, Tulsa, 2002.
[46]	American Society of Heating Refrigerating and Air-Conditioning Engineers, “Ashrae Handbook—Hvac Systems and Equipment,” 2009.
[47]	A. Sheikhi, et al., “CHP Optimized Selection Methodology for a Multi-Carrierenergy System,” International of Review Electrical Engineering (I.R.E.E), Vol. 6, No. 4, 2011, pp. 1-7.
[48]	H. Cho, “Evaluation of CCHP Systems Performance Based on Operational Cost Primary Energy Consumption, and Carbon Dioxide Emission by Utilizing an Optimal Operation Scheme,” Applied Energy, Vol. 86, No. 12, 2009, pp. 2540-2549. doi:10.1016/j.apenergy.2009.04.012
[49]	B. Rolfsman, “CO2 Emission Consequences of Energy Measures in Buildings,” Building and Environment, Vol. 37, No. 12, 2002, pp. 1421-1430.