Performance study of a partial gasification pressurized combustion topping gas cycle and split rankine combined cycle: Part II?Exergy analysis

2003 ◽  
Vol 27 (6) ◽  
pp. 561-574 ◽  
Author(s):  
S. De ◽  
D. Roy ◽  
A. Sarkar
Keyword(s):  
Exergy Analysis ◽  
Combined Cycle ◽  
Performance Study ◽  
Pressurized Combustion ◽  
Partial Gasification

Thermal performance study for the coal-fired combined cycle with partial gasification and fluidized bed combustion

2001 ◽  
Vol 215 (4) ◽  
pp. 421-427 ◽  
Author(s):  
N Cai ◽  
T Yu ◽  
J Xiao ◽  
G Welford
Keyword(s):  
Fluidized Bed ◽  
Thermal Performance ◽  
Combined Cycle ◽  
Fluidized Bed Combustion ◽  
Performance Study ◽  
Integration System ◽  
Partial Gasification ◽  
Exergetic Analysis ◽  
Parametric Analyses ◽  
Pressurized Fluidized Bed Combustion

The coal-fired combined cycle with partial gasification and fluidized bed combustion (PGFBC-CC), also referred to as a hybrid cycle, has advantages of staged energy conversion and utilization, which can attain high thermal efficiency with low emissions. Four kinds of PGFBC-CC are studied in this paper, two based on pressurized fluidized bed combustion (PFBC) and two on atmospheric fluidized bed combustion (AFBC). Thermal performance calculations and parametric analyses were performed. On the basis of the results from the above analyses, the best integration system for China is suggested. In addition, a preliminary exergetic analysis is carried out for three of the PGFBC-CC variants.

scholarly journals Thermodynamic and Economic Analysis of Oxy-Fuel-Integrated Coal Partial Gasification Combined Cycle

ACS Omega ◽  
2021 ◽  
Vol 6 (6) ◽  
pp. 4262-4272
Author(s):  
Chao Ye ◽  
Zefu Ye ◽  
Zhujun Zhu ◽  
Qinhui Wang
Keyword(s):  
Economic Analysis ◽  
Combined Cycle ◽  
Partial Gasification

A Comparative Evaluation of Advanced Combined Cycle Alternatives

1991 ◽  
Vol 113 (2) ◽  
pp. 190-197 ◽  
Author(s):  
O. Bolland
Keyword(s):  
Heat Transfer ◽  
Steam Turbine ◽  
Comparative Evaluation ◽  
Exergy Analysis ◽  
Combined Cycle ◽  
Heat Transfer Area ◽  
Turbine Condenser ◽  
Pressure Cycle ◽  
Steam Turbine Condenser ◽  
Exergy Balance

This paper presents a comparison of measures to improve the efficiency of combined gas and steam turbine cycles. A typical modern dual pressure combined cycle has been chosen as a reference. Several alternative arrangements to improve the efficiency are considered. These comprise the dual pressure reheat cycle, the triple pressure cycle, the triple pressure reheat cycle, the dual pressure supercritical reheat cycle, and the triple pressure supercritical reheat cycle. The effect of supplementary firing is also considered for some cases. The different alternatives are compared with respect to efficiency, required heat transfer area, and stack temperature. A full exergy analysis is given to explain the performance differences for the cycle alternatives. The exergy balance shows a detailed breakdown of all system losses for the HRSG, steam turbine, condenser, and piping.

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