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Improving Performance in Indirect, Natural Gas Line Heaters
Technical Paper
2011-01-1016
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
As a regulated public utility, Consumers Energy constantly struggles to lower operating costs, so that customers can enjoy competitive rates for the natural gas they consume across the state of Michigan. Elimination of line heaters altogether would be one very desirable method of reducing operating cost, unfortunately, Joule Thomson cooling, and the trouble it causes is a fact of life for the natural gas transmission and distribution utilities. Considering this, the operation of line heaters must be optimized so that operating cost can be minimized. Line heaters must be sized appropriately, and controlled so that they are large enough to heat efficiently, but not oversized. Once a heater is installed, the temperature band that it operates within must be set appropriately.
This work presents theory that, over time will improve the efficiency of the operation of line heaters within Consumers Energy. Two objectives of this work will be presented. The first objective presented is a model that can be utilized so that line heaters may be sized as efficiently as possible, and then operated at the optimum temperature. A test facility consisting of a heater, associated control and data acquisition equipment was constructed in Flint, Michigan at an existing gas regulator station. At the test facility, studies using the calculated vs. measured bath temperatures in various scenarios have been conducted in order to validate the models reliability. Based on the results, recommendations have been offered, and future work has been proposed that will improve the model as currently programmed. The second objective is to provide a recommendation to where the control point that will control the heater as efficiently as possible, by only calling for heat when required. In addition to the data collected at the test facility, data was collected from, a cross section of heaters from the 2008-2009 heating season. Significant savings can be achieved by the relocation certain installations' control point.
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Citation
Jawad, B., Adams, K., and Marshall, G., "Improving Performance in Indirect, Natural Gas Line Heaters," SAE Technical Paper 2011-01-1016, 2011, https://doi.org/10.4271/2011-01-1016.Also In
References
- Vrabec, J Kedia, GK Hasse, H Prediction of Joule-Thomson inversion curves for pure fluids and one mixture by molecular simulation Instititute für Technische Thermodynamik und Thermische Verfahrenstechnik, Universität Stuttgart D-70550 Stuttgart, Germany
- Vrabec, J Kedia, GK Hasse, H Joule-Thomson inversion curves of mixtures by molecular simulation in comparison to advanced equations of state: Natural gas as an example Fluid Phase Equilibria 258 34 40 2007
- Kortekaas, WG Peters, CJ de Swaan Arons, J Joule-Thomson expansion of high-pressure-high-temperature gas condensates Fluid Phase Equilibria 139 205 218 1997
- Campbell, J Gas Control and Processing 1 7 th Campbell Petroleum Series Norman Oklahoma 1992
- Natural Gas Council Plus. Liquid Hydrocarbon Drop Out Task Group White Paper on Liquid Hydrocarbon Drop Out in Natural Gas Infrastructure Federal Energy Regulatory Commission E-Library http://elibrary.ferc.gov 2005
- Natco Group, Inc. Natco Group Turbulator 2
- Skovera, JA Design Considerations and Innovative Concepts In Pressure Regulator Station Design Wisconsin Natural Gas Company
- Osiadacj, AJ Chaczykowski, M Comparison of isothermal and non-isothermal pipeline gas flow models Chemical Engineering Journal 81 41 51 2001
- Oosthuizen, PA Naylor, D Introduction to Heat Transfer Analysis McGraw-Hill New York 1999
- Maag, WL Mattson, WL Forced-Convection Heat-Transfer Correlations for Gasses Flowing Through Wire Matrices at Surface Temperatures to 5500 degrees Rankin NASA Technical Note NASA TN D-3956 Lewis Research Center Cleveland, OH 1967
- Lemmon, E.W. McLinden, M.O. Friend, D.G. “Thermophysical Properties of Fluid Systems” NIST Chemistry WebBook, NIST Standard Reference Database Number 69 Linstrom, P.J. Mallard, W.G. June 2005 National Institute of Standards and Technology Gaithersburg MD, 20899
- Munson, BR Young, DF Okiishi, TH Fundamentals of Fluid Mechanics John Wiley & Sons 2002
- De Chant Lawrence, J. An analytical skin friction and heat transfermodel for compressible, turbulent, internal flows Chemical International Journal of Heat And Fluid Flow 19 623 628 1998
- Chakir, A Souli, M Aquelet, N Study of a turbulent natural convection in cylindrical annuli of gas-insulated transmission lines 400 kv Applied Thermal Engineering 23 1197 1208 2003