Hybrid-Nuclear Energy: An Unexpected Assist to Compressed Air Storage

2010 ◽  
Author(s):  
Michael F. Keller
Keyword(s):  
Power Plant ◽  
Nuclear Energy ◽  
Power Production ◽  
Combined Cycle ◽  
Compressed Air ◽  
Energy Industry ◽  
Limited Success ◽  
Helium Gas ◽  
Wide Scale ◽  
Electrical Demand

A long sought but elusive goal of the energy industry has been the use of stored compressed air to support utility power production during periods of high electrical demand. While only limited success has been achieved, an emerging hybrid technology may offer an unexpected assist. Hybrid-nuclear energy marries the helium gas reactor with a combined-cycle power plant. This unique and highly flexible combination readily supports a distinctive adaptation of the basic compressed air technology, with the union poised to overcome the shortfalls that have long hampered the wide-scale deployment of the energy storage facilities.

A GCC Power Plant With Methanol Storage for Intermediate-Load Duty

1991 ◽  
Vol 113 (1) ◽  
pp. 151-157 ◽  
Author(s):  
J. A. Paffenbarger
Keyword(s):  
Power Plant ◽  
Coal Gasification ◽  
Combined Cycle ◽  
Production Costs ◽  
Plant Performance ◽  
Electricity Production ◽  
Fuel Prices ◽  
Electrical Demand ◽  
Integrated Facility ◽  
Plant Configuration

This paper describes the design and performance of a coal gasification combined-cycle power plant with an integrated facility for producing and storing methanol (GCC/methanol power plant). The methanol is produced at a steady rate and is burned in the combined cycle to generate additional power during periods of peak electrical demand. The GCC/methanol plant provides electricity generation and energy storage in one coal-based facility. It is of potential interest to electric utilities seeking to meet intermediate-load electrical demand on their systems. The plant configuration is determined by means of an innovative economic screening methodology considering capital and fuel costs over a range of cycling duties (capacity factors). Estimated levelized electricity production costs indicate that a GCC/methanol plant could be of economic interest as premium fuel prices increase relative to coal. The plant could potentially be of interest for meeting daily peak demands for periods of eight hours or less. The conceptual plant configuration employs a Texaco gasifier and a Lurgi methanol synthesis plant. Plant performance is estimated at peak and baseload output levels. No unusual design or operational problems were identified.

Analysis of Integrated Coal Gasification System/Compressed-Air Energy Storage Power Plant Concepts

1991 ◽  
Author(s):  
M. Nakhamkin ◽  
M. Patel ◽  
L. Andersson ◽  
P. Abitante ◽  
A. Cohn
Keyword(s):  
Energy Storage ◽  
Power Plant ◽  
Coal Gasification ◽  
Cost Effective ◽  
Combined Cycle ◽  
Compressed Air ◽  
Cost Comparison ◽  
Compressed Air Energy Storage ◽  
Integrated Gasification Combined Cycle ◽  
Integrated Gasification

This paper presents the results of a project targeted at developing cost effective power plant concept with integrated Coal Gasification System (CGS) and with Compressed Air Energy Storage (CAES) plant. The developed concepts, denoted as CGS/CAES, provide for continuous operation of CGS and the reheat turboexpander train which are high temperature components, thus improving their operation and extending life resource. A parametric thermodynamic analysis is performed for several CGS/CAES concepts differentiated by their turbomachinery parameters, CGS arrangements, operating cycles, and hours of daily generation. A qualitative cost estimate is made using a variety of sources including published EPRI reports and extensive in-house cost data. A technical and cost comparison is made to the Integrated Gasification Combined Cycle (IGCC) plant.

A GCC Power Plant With Methanol Storage for Intermediate-Load Duty

1990 ◽  
Author(s):  
John A. Paffenbarger
Keyword(s):  
Power Plant ◽  
Coal Gasification ◽  
Combined Cycle ◽  
Production Costs ◽  
Plant Performance ◽  
Electricity Production ◽  
Fuel Prices ◽  
Electrical Demand ◽  
Integrated Facility ◽  
Plant Configuration

This paper describes the design and performance of a coal gasification combined-cycle power plant with an integrated facility for producing and storing methanol (GCC/methanol power plant). The methanol is produced at a steady rate and is burned in the combined-cycle to generate additional power during periods of peak electrical demand. The GCC/methanol plant provides electricity generation and energy storage in one coal-based facility. It is of potential interest to electric utilities seeking to meet intermediate-load electrical demand on their systems. The plant configuration is determined by means of an economic screening study considering capital and fuel costs over a range of cycling duties (load factors). Estimated levelized electricity production costs indicate that a GCC/methanol plant could be of economic interest as premium fuel prices increase relative to coal. The plant could potentially be of interest for meeting daily peak demands for periods of eight hours or less. The conceptual plant configuration employs a Texaco gasifier and a Lurgi methanol synthesis plant. Plant performance is estimated at peak and baseload output levels. No unusual design or operational problems were identified.

Electricity Generation From Fuel Cell Waste Heat Using an Organic Rankine Cycle

2014 ◽  
Author(s):  
Lucien Bronicki ◽  
Carl N. Nett ◽  
Josh Nordquist
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Power Plant ◽  
Waste Heat ◽  
Local Heating ◽  
Organic Rankine Cycle ◽  
Power Production ◽  
Combined Cycle ◽  
Commercial Application ◽  
Fuel Cell Stack

Fuel cells produce exhaust waste heat that can be harnessed to either meet local heating needs or produce additional electricity via an appropriately chosen bottoming cycle. Power production can often be more economically attractive than heating due to the much higher value of electricity than heat on an equivalent energy basis, especially given fuel cell incentives and subsidies that are based on the net electrical output of the (combined cycle) fuel cell power plant. In this paper we review the application of the Organic Rankin Cycle (ORC) for power production from fuel cell waste heat, with emphasis on the resulting improvements in overall power plant power output, efficiency, economics (e.g., cents/kWh maintenance costs), and emissions levels (e.g., lb/MWh emissions). We also highlight a much less obvious advantage of ORC bottoming of fuel cells; namely, its ability to partially compensate for fuel cell stack degradation over time, and corresponding potential to extend the time required between fuel cell stack overhauls. We will also review the relative difficulty of several well established commercial applications of the ORC for power production from waste heat — such as power production from gas turbine exhaust, etc. — in comparison to fuel cell applications. We conclude that not only is the ORC ideal for fuel cell bottoming, but also that fuel cells are a nearly ideal commercial application area for the ORC. In closing, we summarize a recently completed project believed to be the world’s first commercial application of ORC technology to a fuel cell power plant. This project was completed in less than a year after its initiation, and utilizes a single ORC in conjunction with five fuel cells, all located within a fuel cell park that produces nearly 15 MW of electricity.

Thermal Analysis of Combined Cycle Power Plant with Desalination Unit

2013 ◽  
Vol 658 ◽  
pp. 430-436 ◽  
Author(s):  
Mohamed A. Elhaj ◽  
Moustfa M. Mahgub ◽  
Kassim K. Matrawy
Keyword(s):  
Power Plant ◽  
Steam Turbine ◽  
Gas Turbine ◽  
Excess Energy ◽  
Combined Cycle ◽  
Loading Conditions ◽  
Combined Cycle Power Plant ◽  
Main Components ◽  
Electrical Demand ◽  
Base Load

The aim of the present study is to utilize the excess energy of combined cycle power plant (CCPP) in desalination unit in cases of low electrical demand loading conditions. The main components of proposed (CCPP) included the gas turbine and steam turbine units. Gas turbine produces the major part of the developed power, while the steam turbine produces the remaining one in case of peak loading conditions. For the case of base load, the excess energy of steam turbine is used in desalination unit.

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