19 Superheater tube rows and deep number

2021 ◽  
pp. 60-61
Keyword(s):  
Superheater Tube

SANDVIK 310/T22

Alloy Digest ◽  
1994 ◽  
Vol 43 (6) ◽  
Keyword(s):  
Stainless Steel ◽  
Corrosion Resistance ◽  
Composite Tube ◽  
Design Load ◽  
Inside Diameter ◽  
Superheater Tube ◽  
310 Stainless Steel ◽  
Outside Diameter ◽  
Load Carrier

Abstract SANDVIK 310/T22 is a composite tube consisting of Type 310 stainless steel for corrosion resistance on the outside diameter and having T22 (21/4 Cr-1Mo) to A213 on the inside diameter to act as the superheater tube and design load carrier. This datasheet provides information on composition. It also includes information on forming and joining. Filing Code: SA-477. Producer or source: Sandvik.

Scaling Behavior of Superheater Tube Alloys in ASME High Temperature Steam Research Tests at 1100–1500 F

1962 ◽  
Vol 84 (3) ◽  
pp. 223-257 ◽  
Author(s):  
F. Eberle ◽  
C. H. Anderson
Keyword(s):  
High Temperature ◽  
Chemical Composition ◽  
Thermal Shock ◽  
Thermal Shock Resistance ◽  
Scaling Behavior ◽  
Effect Of Temperature ◽  
Relative Resistance ◽  
Superheater Tube ◽  
Shock Resistance ◽  
High Temperature Steam

The scales formed on seven ferritic and ten austenitic types of commercial tubing presently in use and of potential future use for superheater service were examined after 6, 12, and 18 months’ exposure to air and to flowing steam of 2000 psi at temperatures of 1100, 1200, 1350, and 1500 F. The effect of temperature and time of exposure on the adherence, thermal-shock resistance, thickness, structure, and chemical composition of the scales was investigated and the relative resistance to scaling of the various alloys evaluated.

scholarly journals Analisa Kerusakan Superheater Tube Boiler Tipe ASTM A213 Grade T11 pada Pembangkit Listrik Tenaga Uap

2016 ◽  
Vol 5 (2) ◽  
Author(s):  
Jeremy Adrian ◽  
Nizhamul Latif ◽  
Lukman Noerochim ◽  
Budi Agung Kurniawan
Keyword(s):  
Superheater Tube

scholarly journals Mechanical Properties of Ni-Cr-Mo Alloy Applied to Superheater Tube for High-Efficiency Waste Power Generation Boiler

2002 ◽  
Vol 66 (6) ◽  
pp. 544-548
Author(s):  
Takanori Matsui ◽  
Koumei Kato ◽  
Yasuo Dotani ◽  
Yuuzou Kawahara ◽  
Yoshiyasu Shirota
Keyword(s):  
Mechanical Properties ◽  
Power Generation ◽  
High Efficiency ◽  
Superheater Tube

Evaluation of bend curvature of superheater tube using CFD analysis

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Sushovan Chatterjee ◽  
Subhasish Das ◽  
Neelam Kumar Sarma
Keyword(s):  
Heat Transfer ◽  
Computational Study ◽  
Flow Behavior ◽  
Radius Of Curvature ◽  
Pass System ◽  
Maximum Heat ◽  
Curvature Ratio ◽  
Content Type ◽  
Superheater Tube ◽  
The Impact

Purpose The heat transfer within a heat exchanger is highly influenced by geometry of the components especially those with hollow structures like tubes. This paper aims to intend toward the study of efficient and optimized heat transfer in the bends of superheater tubes, with different curvature ratio at constant Reynolds Number. Design/methodology/approach The effect of changing curvature ratio on enthalpy of the fluid passing through the superheater tubes for multi-pass system has been studied with the aid of computational fluid dynamics (CFD) using ANSYS 14.0. Initially a superheater tube with two pass system has been examined with different curvature ratios of 1.425, 1.56, 1.71, 1.85 and 1.99. An industry specified curvature ratio of 1.71 with two pass is investigated, and a comparative assessment has been carried out. This is intended toward obtaining an optimized radius of curvature of the bend for enhancement of heat transfer. Findings The results obtained from software simulation revealed that the curvature ratio of 1.85 provides maximum heat transfer to the fluid flowing through the tube with two pass. This result has been found to be consistent with higher number of passes as well. The effect of secondary flow in bends of curvature has also been illustrated in the present work. Research limitations/implications The study of heat transfer in thermodynamic systems is a never-ending process and has to be continued for the upliftment of power plant performances. This study has been conducted on steady flow behavior of the fluid which may be upgraded by carrying out the same in transient mode. The impact of different curvature ratios on some important parameters such as heat transfer coefficients will certainly upgrade the value of research. Originality/value This computational study provided comprehensive information on fluid flow behavior and its effect on heat transfer in bends of curvature of superheater tubes inside the boiler. It also provides information on optimized bend of curvature for efficient heat transfer process.

Failure analysis of hanger for superheater tube

2020 ◽  
Author(s):  
Husaini Ardy ◽  
Deri Andika Bangun ◽  
Arie Wibowo
Keyword(s):  
Failure Analysis ◽  
Superheater Tube

Analysis on Failure of Oxide Layer of T91 High Temperature Superheater Tube

2014 ◽  
Vol 1070-1072 ◽  
pp. 505-511
Author(s):  
Shan Shan Zhang ◽  
Guang Chen ◽  
Chang Ming Li ◽  
Da Hu
Keyword(s):  
High Temperature ◽  
Dissolved Oxygen ◽  
Oxide Layer ◽  
Outer Layer ◽  
Oxidation Mechanism ◽  
Middle Layer ◽  
Compact Structure ◽  
Protective Properties ◽  
Superheater Tube ◽  
Temperature Operating

The reason why the failure protective properties of the oxide layer of T91 high temperature superheater tube were analyzed in this study. The microstructure of the oxide layer of T91 high temperature superheater tube was observed by scanning electron microscope (SEM) and the morphological features of it was also analyzed. The concentrations of alloy elements in the section of internal tube were quantitatively analyzed using Energy Dispersive System (EDS). The results showed that the oxide layer of T91 tube can be divided into three layers: inner layer, middle layer and outer layer. The inner layer was formed by chromium rich oxide with compact structure. The middle layer was made up by porous oxide with loose structure. The outer layer was identified as Fe2O3. When the content of dissolved oxygen in steam was excessive, the apparent peeling marks will be appeared in the oxide layer of T91 high temperature superheater tube and the distribution of alloy elements in the oxide layer will present obvious proliferation, migration and enrichment phenomenon. Two different mechanisms (steam oxidation mechanism and oxygen oxidation mechanism) will exercise different influences on the structure and protective properties of the oxide layer: when steam contained dissolved oxygen, the oxide layer will be peroxidated by steam and the structure of oxide layer will be broken; When the tube was over-temperature operating, the oxide layer will be oxidated by oxygen.

scholarly journals Cracking of superheater tube in a captive power plant

2018 ◽  
Vol 53 (sup1) ◽  
pp. 98-104 ◽  
Author(s):  
Geogy J. Abraham ◽  
Vivekanand Kain ◽  
Niraj Kumar
Keyword(s):  
Power Plant ◽  
Superheater Tube
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