scholarly journals Simulation and Performance Analysis of Micro Gas Turbine Distributed Energy System

2015 ◽  
Vol 04 (01) ◽  
pp. 17-24
Author(s):  
云蛟 古
Keyword(s):  
Performance Analysis ◽  
Gas Turbine ◽  
Energy System ◽  
Distributed Energy ◽  
Micro Gas Turbine ◽  
Distributed Energy System ◽  
And Performance

Conceptual Design and Performance Analysis of SOFC/Micro Gas Turbine Hybrid Distributed Energy System

2015 ◽  
Vol 12 (3) ◽  
Author(s):  
Zheng Dang ◽  
Hua Zhao ◽  
Guang Xi
Keyword(s):  
Performance Analysis ◽  
Gas Turbine ◽  
Hybrid System ◽  
Pressure Ratio ◽  
Energy System ◽  
Inlet Temperature ◽  
Reaction Heat ◽  
Micro Gas Turbine ◽  
Distributed Energy System ◽  
And Performance

A numerical model has been developed for the performance analysis of solid oxide fuel cell (SOFC)/micro gas turbine (MGT) hybrid systems with prereforming of natural gas, in which a quasi two-dimensional model has been built up to simulate the cell electrochemical reaction, heat and mass transfer within tubular SOFC. The developed model can be used not only to predict the overall performance of the SOFC/MGT hybrid system but also to reveal the nonuniform temperature distribution within SOFC unit. The effects of turbine inlet temperature (TIT) and pressure ratio (PR) on the performance of the hybrid system have been investigated. The results show that selecting smaller TIT or PR value will lead to relative higher system efficiency and lower CO2 emission ratio; however, this will raise the risk to destroy SOFC beyond the limitation temperature of electrolyte.

Conceptual Design and Performance Analysis of SOFC/MGT Hybrid Distributed Energy System

2011 ◽  
Author(s):  
Zheng Dang ◽  
Hua Zhao ◽  
Guang Xi
Keyword(s):  
Performance Analysis ◽  
Hybrid System ◽  
Pressure Ratio ◽  
Energy System ◽  
Inlet Temperature ◽  
Distributed Energy ◽  
Reaction Heat ◽  
Distributed Energy System ◽  
Overall Performance ◽  
And Performance

A numerical model has been developed for the performance analysis of SOFC/MGT hybrid systems with pre-reforming of natural gas, in which a quasi-2 dimensional model has been built up to simulate the cell electrochemical reaction, heat and mass transfer within tubular SOFC. The developed model can be used not only to predict the overall performance of the SOFC/MGT hybrid system but also to reveal the nonuniform temperature distribution within SOFC unit. The effects of turbine inlet temperature (TIT) and pressure ratio (PR) to the performance of the hybrid system have been investigated. The results show that selecting smaller TIT or PR value will lead to relative higher system efficiency and lower CO2 emission ratio; however this will raise the risk to destroy SOFC beyond the limitation temperature of electrolyte.

Integration of Distributing Energy System I: Modeling and Simulation

2012 ◽  
Vol 512-515 ◽  
pp. 1156-1162
Author(s):  
Jin Yang Wang ◽  
Guo Min Cui ◽  
Fu Yu Peng
Keyword(s):  
Numerical Simulation ◽  
Gas Turbine ◽  
Performance Prediction ◽  
System Modeling ◽  
Energy System ◽  
Primary Energy ◽  
Simulation System ◽  
Generation System ◽  
Micro Gas Turbine ◽  
And Performance

The heating, power and cooling distributing energy system is studied by numerical simulation. System modeling and performance prediction are studied on the tri-generation system based on micro gas turbine as primary energy utilizing equipment in part Ⅰ. The results show: The numerical simulation can replace pilotscale experiment of objective project in the aspects of design and performance prediction of distributing energy system.

Second Law Analysis of a Refrigeration System for a Novel Semi-Closed Gas Turbine-Absorption Combined Cycle

2010 ◽  
Author(s):  
ChoonJae Ryu ◽  
William E. Lear ◽  
S. A. Sherif
Keyword(s):  
Gas Turbine ◽  
Power Efficiency ◽  
Energy System ◽  
Combined Cycle ◽  
Lapse Rate ◽  
Refrigeration System ◽  
Distributed Energy ◽  
Distributed Energy System ◽  
Load Leveling ◽  
Ice Production

The Power, Water Extraction, and Refrigeration (PoWER) engine has been investigated for several years as a distributed energy system, among other applications, for civilian or military use. Previous literature describing its modeling and experimental demonstration have indicated several benefits, especially when the underlying semi-closed cycle gas turbine is combined with a vapor absorption refrigeration system, the PoWER system described herein. The benefits include increased efficiency, high part-power efficiency, small lapse rate, compactness, less emission, air, and exhaust flows (which decrease filtration and duct size) and condensation of fresh water. The present paper describes the preliminary design and modeling of a modified version of this system as applied to distributed energy, especially useful in regions which are prone to major grid interruptions due to hurricanes, under - capacity, or terrorism. In such cases, the distributed energy system should support most or all services within an isolated service island, including ice production, so that the influence of the power outage is limited in scope. This paper describes the rather straightforward system modifications necessary for ice production. The primary focus of the paper is the use of this ice-making capacity to achieve significant load-leveling during the summer utility peak, hence reducing the electrical capacity requirements for the grid as well as load-leveling strategies.

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