scholarly journals Learner Understanding of Energy Degradation

2014 ◽  
Author(s):  
Abigail R. Daane ◽  
Stamatis Vokos ◽  
Rachel E. Scherr
Keyword(s):  
Energy Degradation

Associated Gas Utilization Using a Reheat Gas Turbine – Part 1: The Impact of Engine Degradation on the Optimized Power, Energy, and Revenue From Sold Electricity

2021 ◽  
Author(s):  
Mafel Obhuo ◽  
Duabari S. Aziaka ◽  
Dodeye I. Igbong ◽  
Ibirabo M. Obhuo
Keyword(s):  
Genetic Algorithm ◽  
Total Energy ◽  
Gas Turbine ◽  
Similar Sequence ◽  
Associated Gas ◽  
Gas Utilization ◽  
Energy Degradation ◽  
Fuel Resource ◽  
The Impact

Abstract This study presents a methodology for optimizing the power from a fleet of engines that use associated gas as fuel. The effects of engine degradation on optimized power, energy, and electricity revenue have been evaluated. The Cranfield University TURBOMATCH has been used to simulate a 296MW reheat gas turbine. Four scenarios were considered — clean, optimistic, medium, and pessimistic. Genetic algorithm was used in optimizing the power generated from the fleets. In the sequence of clean, optimistic, medium, and pessimistic fleets, the optimization results show that the total optimized power values are 7324.6, 7245.1, 7164.0, and 7074.4MW respectively. In the same sequence, the total energy generated is 64.2, 63.5, 62.8, and 61.9 billion kWh. In a similar sequence still, the electricity revenue is 8.487, 8.390, 8.298, and 8.192 billion US dollars respectively. In comparison with the clean, engine degradation resulted in a 1.09%, 2.19%, and 3.42% decrease in energy for the optimistic, medium, and pessimistic degraded fleets respectively. In the same sequence as the decrease in energy, degradation resulted in a 1.15%, 2.23%, and 3.48% decrease in electricity revenue. The methodology and results presented in this paper would serve as a guide for associated gas investors in the economic utilization of this fuel resource. This is innovative; it has not been done with the Alstom GT-26 engine.

Remarks on Concentration Quenching in Chlorophyll

1982 ◽  
Vol 37 (2) ◽  
pp. 150-153 ◽  
Author(s):  
C. Bojarski
Keyword(s):  
Energy Transfer ◽  
Fluorescence Quantum Yield ◽  
Energy Transfer Process ◽  
Excitation Energy Transfer ◽  
Lipid Vesicles ◽  
Concentration Quenching ◽  
Monomeric Form ◽  
Chlorophylls A And B ◽  
Energy Degradation ◽  
Concentration Changes

Abstract A quantitative analysis of fluorescence self-quenching of chlorophylls a and b in ether as well as chlorophyll a in lipid vesicles and liposomes has been carried out. It is demonstrated that concentration changes of the fluorescence quantum yield can be correctly described by a Förster-type excitation energy transfer process between chlorophyll molecules in the monomeric form if part of the transfers leads to energy degradation.

A constitutive framework based on elastic and internal energy degradation

2001 ◽  
Vol 152 (1-4) ◽  
pp. 19-34 ◽  
Author(s):  
G. Borino ◽  
S. Del Linz ◽  
G. Giambanco
Keyword(s):  
Internal Energy ◽  
Energy Degradation
Sign in / Sign up

Export Citation Format

Share Document