Material considerations for HRSGs in gas turbine combined cycle plants. Final report
The primary objectives of this project are to investigate and identify the limitations of current heat recovery steam generator (HRSG) materials, identify potential materials that could be used in future high temperature HRSGs, and develop a research and development plan to address the deficiencies and the future requirements. The project team developed a comprehensive survey which was forwarded to many HRSG manufacturers worldwide. The manufacturers were questioned about cycle experience, failure experience, design practices, materials, research and development, and future designs. The team assembled the responses and other in-house data to identify the key problem areas, probably future operating parameters, and possible material issues. The draft report was circulated to the manufacturers surveyed for comments before the final report was issued. The predominant current problem area for HRSGs relates to insulation; however, it is anticipated that in future designs, tube failures and welds will become most important. Poor water chemistry has already resulted in numerous failure mechanisms. By 2005, HSRGs are expected to operated with the following average conditions: unfired gas temperatures of 1125 F, steam temperatures of 950 F, steam pressures of 1500 psi, and exhaust temperatures of 170 F.
- Research Organization:
- Electric Power Research Inst. (EPRI), Palo Alto, CA (United States); Fern Engineering, Inc., Pocasset, MA (United States)
- Sponsoring Organization:
- Electric Power Research Inst., Palo Alto, CA (United States)
- OSTI ID:
- 395641
- Report Number(s):
- EPRI-TR-105013; TRN: 96:006286
- Resource Relation:
- Other Information: PBD: Aug 1996
- Country of Publication:
- United States
- Language:
- English
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