This paper presents a thermodynamic analysis of the Air Bottoming Cycle (ABC) as well as the results of a feasibility study for using the Air Bottoming Cycle for gas turbine waste heat recovery/power generation on oil/gas platforms in the North Sea. The basis for the feasibility study was to utilize the exhaust gas heat from an LM2500PE gas turbine. Installation of the ABC on both a new and an existing platform have been considered. A design reference case is presented, and the recommended ABC is a two-shaft engine with two compressor intercoolers. The compression pressure ratio was found optimal at 8:1. The combined gas turbine and ABC shaft efficiency was calculated to 46.6 percent. The LM2500PE gas turbine contributes with 36.1 percent while the ABC adds 10.5 percent points to the gas turbine efficiency. The ABC shaft power output is 6.6 MW when utilizing the waste heat of an LM2500PE gas turbine. A preliminary thermal and hydraulic design of the ABC main components (compressor, turbine, intercoolers, and recuperator) was carried out. The recuperator is the largest and heaviest component (45 tons). A weight and cost breakdown of the ABC is presented. The total weight of the ABC package was calculated to 154 metric tons, and the ABC package cost to 9.4 million US$. An economical examination for three different cases was carried out. The results show that the ABC alternative (LM2500PE + ABC) is economical, with a rather good margin, compared to the other alternatives. The conclusion is that the Air Bottoming Cycle is an economical alternative for power generation on both new platforms and on existing platforms with demand for more power.

1.
Beck, S., 1994, “Creare Baleen Regenerator,” Memorandum, Creare Inc.
2.
Bolland
O.
,
1991
, “
A Comparative Evaluation of Advanced Combined Cycle Alternatives
,”
ASME JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER
, Vol.
113
, pp.
190
197
.
3.
Farrell, W. M., 1988, “Air Cycle Thermodynamic Conversion System,” United States Patent No. 4,751,814.
4.
Farrell, W. M., 1992, “Air Cycle Thermodynamic Conversion System,” European Patent Specification 0 208 162 B1.
5.
Grieb, H., Schill, D. G., and Gumucio, R., 1975, “A Semi-empirical Method for the Determination of Multistage Axial Compressor Efficiency,” ASME Paper No. 75-GT-11.
6.
GTPRO v.6.5, 1994, commercially available gas turbine database and power cycle design program, Thermoflow Inc., Wellesley MA, USA.
7.
Ha˚nde, B. M., 1992, “Simulation of Steam Injected Gas Turbines,” Doctoral Thesis, University of Trondheim, ISBN 82-7119-401-1.
8.
Hawkins, W. J., Mathieson, D., Bruce, C. J., and Socoloski, P., 1994, “System Development Test Program for the WR-21 Intercooled Recuperated (ICR) Gas Turbine Engine System,” ASME Paper No. 94-GT-186.
9.
Hornnes, A., and Bolland, O., 1991, “Power Cycle Working Fluids,” SINTEF-report STF15 A91041, Trondheim, Norway.
10.
Kays, W. M., and London, A. L., 1984, Compact Heat Exchangers, 3rd ed., McGraw-Hill.
11.
Klapproth
J. F.
,
1959
, Discussion of paper by Lieblein listed elsewhere in this reference list,
ASME JOURNAL OF BASIC ENGINEERING
, Vol.
81
, p.
398
398
.
12.
Koch, C. C., and Smith, L. H., 1976, “Loss Sources and Magnitudes in Axial Flow Compressors,” ASME JOURNAL OF ENGINEERING FOR POWER, Vol. 98, No. 3.
13.
Koch, C. C., 1981, “Stalling Pressure Rise Capability of Axial Flow Compressor Stages,” ASME JOURNAL OF ENGINEERING FOR POWER, Vol. 103, No. 4.
14.
Lieblein, S., 1959, “Loss and Stall Analysis of Compressor Cascades,” ASME Journal of Basic Engineering, Vol. 81, No. 3.
15.
Olikara, C, and Borman, G. L., 1975, “A Computer Program for Calculating Properties of Equilibrium Combustion Products With Some Applications to I.C. Engines,” SAE Paper No. 750468, Feb.
16.
O̸verli, J. M., 1992, Stro̸mningsmaskiner (Turbomachinery), Vol. 3, 2nd ed., Tapir, Trondheim.
17.
Pettersen, J., 1987, “Bunnprosesser for gassturbin-kraftverk (Bottoming Cycles for Gas Turbine Power Plants),” Diploma Thesis, Division of Refrigeration, Norwegian Institute of Technology.
18.
Rasmussen, J. B., 1994, personal communication, Norsk Hydro T&U.
19.
Ricket, R., 1994, personal communication, Westinghouse Electric Corporation, ICR Design Engineering.
20.
Sayers, A. T., 1990, Hydraulic and Compressible Flow Turbomachines, McGraw-Hill, New York, p. 236.
21.
Shepard
S. B.
,
Bowen
T. L.
, and
Chiprich
J. M.
,
1995
, “
Design and Development of the WR-21 Intercooled Recuperated (ICR) Marine Gas Turbine
,”
ASME JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER
, Vol.
117
, pp.
557
562
.
22.
Solheim, K. S., 1994, personal communication, Norsk Hydro Aluminium Structures.
23.
Sovran, G., and Klomp, E. D., 1967, “Experimentally Determined Optimum Geometries for Rectilinear Diffusers With Rectangular, Conical or Annular Cross-Section,” Fluid Mech. of Internal Flow, Elsevier Publishing, Amsterdam.
24.
Sæther, S., 1993, “Combined Cycles With Compact Heat Recovery Steam Generators,” SINTEF Report STF15 A93111, Trondheim, Norway.
25.
Walker, G., Kremer, J., Fauvel, R., Reader, G., and Bingham, E. R., 1992, “Stirling Bottoming Cycle for the Gas Turbine Exhaust Streams of Pipeline Compressor Stations,” Proceedings of the 27th Intersociety Energy Conversion Engineering Conference, San Diego, CA, Aug.
26.
Wicks, F., Berven, G., and Marchionne, D., 1992, “A Combined Cycle With Gas Turbine Topping and Thermodynamically Ideal Gas Turbine Bottoming,” Proceedings of the 27th Intersociety Energy Conversion Engineering Conference, San Diego, CA, Aug.
27.
Wilson, R. A., and Kupratis, D. B., 1994, “Future Vehicular Recuperator Technology Projections,” ASME Paper 94-GT-395; accepted for publication in the ASME Journal of Turbomachinery.
28.
Weston, K. C., 1993, “Dual Gas Turbine Combined Cycles,” Proceedings of the 28th Intersociety Energy Conversion Engineering Conference, Atlanta, GA.
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