Proposing a Novel Configuration for CGSs Aimed at Reducing Energy Consumption and Exergy Destruction

Document Type: Research Paper

Authors

1 Department of Mechanical Engineering, Minoodasht Branch, Islamic Azad University, Minoodasht, Minoodasht, IRAN

2 Department of Mechanical Engineering, Shahrood University of Technology, Shahrood, IRAN

3 Department of Mechanical Engineering, Federal University of Minas Gerais (UFMG), BH, Brazil

Abstract

A CGS is of the most important parts in natural gas transmission pipelines in which the high inlet natural gas (NG) pressure is reduced to much lower value by employing a throttling valve. This pressure drop causes hydrate forming, preventing stable NG flow through the pipeline. To prevent hydrate forming, NG is usually preheated by heaters which burns remarkable amount of NG. In this work, a novel configuration for CGSs is proposed in which solar heat is utilized to decrease fuel consumption and a turbo expander is employed to utilize the available exergy in the NG stream to produce power. Finally, an economic analysis is done on the proposed configuration based on NPV method in order to calculate optimum cost of capital and the configuration efficiency.

Keywords

Main Subjects


[1] Edalata, M., and Mansoori, G. A., "Buried Gas Transmission Pipelines: Temperature Profile Prediction through the Corresponding States Principle", Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, Vol. 10, Issue. 4, pp. 247-252, (1988).

 

[2] Fundamentals of Natural Gas Pressure Drop Stations Design, Iranian National Gas Company, (2005).

                

[3] Kalogirou, A.S., "Solar Thermal Collectors and Applications", Progress in Energy and Combustion Science, Vol. 30, 231–295, (2004).

 

[4]  Norton, B., "Solar Process Heat: Distillation, Drying, Agricultural and Industrial uses", Proceedings of ISES Solar World Congress, Jerusalem, Israel on CD-ROM, Jerusalem, Israel, (1999).

 

[5] Spate, F., Hafner, B., and Schwarzer, K., "A System for Solar Process Heat for Decentralised Applications in Developing Countries", Proceedings of ISES Solar World Congress on CD-ROM, Jerusalem, Israel, (1999).

 

[6] Benz, N., Gut, M., and Rub, W., "Solar Process Heat in Breweries and Dairies", Proceedings of EuroSun 98, Portoroz, Slovenia on CD-ROM, (1998).

 

[7] Benz, N., Gut, M., and Beikircher, T.," Solar Process Heat with Nonconcentrating Collectors for Food Industry",  Proceeding of ISES Solar World Congress on CD ROM, Jerusalem, Israel, (1999).

 

[8]  Li, H., and Yang, H., "Potential Application of Solar Thermal Systems for Hot Water Production in Hong Kong. Applied Energy, Vol. 86, pp. 175–180, (2009),

 

[9]  Baldini, A., Manfrida1, G., and Tempesti, D., "Model of a Solar Collector/Storage System for Industrial Thermal Applications", Int. J. of Thermodynamics Vol. 12, No. 2, pp. 83-88, (2009).

 

[10]  Bisio, G., "Thermodynamic Anaiysis of the use of Pressure Exergy of Natural-Gas", Energy, Vol. 20, No. 2, pp. 161-167, (1995).

 

[11] Dresser-Rand:  "FCC Power Recovery Expanders", Available at: http://www.dresserrand.com/turbo/eq/expand.asp

 

[12] Greeff, I. L.,  Visser, J. A.,  Ptasinski, K. J., and Janssen, F. J. J. G., "Using Turbine Expanders to Recover Exothermic Reaction Heat Flow Sheet Development for Typical Chemical Processes", Energy, Vol. 29, pp. 2045–2060, (2004).

 

[13] Hinderink, A. P.,  Kerkhof, F. P. J. M., Lie, A. B. K., de Swaan, J., Arons and van  der Kooi, H. J., " Exergy Analysis with a Flow Sheeting Simulator, Part 1: Theory; Calculating Exergies of Material Streams", Chem. Eng. Sci.,  Vol. 51,  No. 20, pp. 4693–4700.

 

[14] Pozivil, J., "Use of Expansion Turbine in Natural Gas Pressure Reduction Stations", J. Acta Montanistica Slovaca, Vol. 9, pp. 258-260, (2004).

 

[15]  Farzaneh-Gord, M., and Magrebi J.," Exergy of Natural Gas Flow in Iran’s Natural Gas Fields", International Journal of Exerg, Vol. 6, No. 1,  pp. 131-142, (2009).

 

[16] Farzaneh-Gord,  M., Manzari, M., Maghrebi, M., Hashemi, S., Eftekhari, H., and Farokhi A.,. "Using Pressure Exergy of Natural Gas in Bandar-Abbas Refinery Gas Pressure Drop Station, the 2nd ICMSAO, pp. 24-27, (2007), March. Abu Dhabi, UAE.

 

[17]  Farzaneh-Gord, M., Hashemi, S., and Sadi, M., "Energy Destruction in Iran’s Natural Gas Pipe Line Network Energy Exploration and Exploitation", Vol. 25, pp. 393-406, (2007).

 

[18] Najafi-mod, M.H., Alizadeh, A., Mohamadian, A.,  and Mousavi  J., "Investigation of Relationship between Air and Soil Temperature at Different Depths and Estimation of the Freezing Depth (Case study: Khorasan Razavi), Journal of Water and  Soil of Ferdowsi University of Mashhad, Vol. 22, No. 2, (2008).

 

[19] Incropera, F.P., and DeWitt, D.P., "Fundamentals of Heat and Mass Transfer", 5th Ed. New York, John Wiley, (2002).

 

[20] Arabkoohsar, A., Farzaneh-Gord, M., Deymi-Dashtebayaz, M., Machado, L., and Koury, R. N.N., "Energy and Exergy Analysis of Natural Gas Pressure Reduction Points Equipped with Solar Heat and Controllable Heaters", Renewable Energy, Vol. 72, pp. 258-270, (2014). December

 

[21] Zekai S., "Solar Energy Fundamentals and Modelling Techniques", 3rd Ed., London, Springer 180, (2008).

 

[22] Duffie, J.A., and Beckman, W.A., "Solar Engineering of Thermal Processes", Second Ed, New York, Willy, (1991).

 

[23] Yik, F.W.H., Chung, T.M., and Chan, K.T.,  "A Method to Estimate Direct and Diffuse Radiation in Hong Kong and Its Accuracy", Transactions of the Hong Kong Institution of Engineers, Vol. 2, pp. 23–29, (1995).

 

[24] Farzaneh-Gord, M., Arabkoohsar, A., Rezaei, M., Deymi-Dashtebayaz, M., and Rahbari, H. R., "Feasibility of Employing Solar Energy in Natural Gas Pressure Drop Stations", Journal of the Energy Institute, Vol. 84, No. 3, pp.165, (2011)

 

[25] Farzaneh-Gord, M., Arabkoohsar A., and Deymi-Dashtebayaz, M., "Feasibility of Accompanying Uncontrolled Linear Heater with Solar System in Natural Gas Pressure Drop Stations", Energy, Vol. 41, pp. 1-9, (2012).

 

[26] http://solar.polar.ir/.

 

[27] Farzaneh-Gord, M., and Sadi, M., "Enhancing Energy Output in Iran’s Natural Gas Pressure Drop Stations by Cogeneration", Journal of the Energy Institute, Vol. 81, No. 4, pp. 191-196, (2011).

 

[28] Moran, M. J., and Shapiro, H. N., "Fundamentals of Engineering Thermodynamics".

 

[29] Bejan, A., “Advanced Engineering Thermodynamic”, Second Edition, Wiley & Sons, pp. 133-137 & 462-465, (1988).

 

[30] Farzaneh-Gord, M., and Rahbari, H. R., "Developing Novel Correlations for Calculating Natural Gas Thermodynamic Properties", Chemical and Process Engineering, Vol. 32 No. 4, pp. 435-452, (2011). DOI: 10.2478/v10176-011-0035-1

 

[31]  Farzaneh-Gord, M., Arabkoohsar, A., Deymi Dashtebayaz, M., and Khoshnevis, A. B., "New Method of Solar Energy Application in Greenhouses in Order to Decrease Fuel Consumption", International Journal of Agricultural and Biological Engineering, Vol. 6, No. 4, pp. 1-11, (2013).