Analysis and optimization on a modified ammonia-water power cycle for more efficient power generation

A novel ammonia-water power cycle is proposed, which uses low-temperature heat sources such as oceanic-thermal, biomass as well as industrial waste heats. An ejector is introduced between the turbine and the absorber. The main emphasis is placed on the energy and exergy analysis to guide the thermodynamic improvement for the cycle; parametric analysis is conducted to investigate the effects of thermodynamic parameters on the cycle performances. The result shows that the thermal efficiency can reach to 5.31% and the exergitic efficiency varies between 13.3% and 24.4% under the given condition. In addition, the generator pressure, the deflation ratio variation and the turbine outlet depressurization made by ejector have significant effects on the performance of the power cycle.

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Evaluation of the integration of an ammonia-water power cycle in an absorption refrigeration system of an industrial plant

Energy Conversion and Management ◽

10.1016/j.enconman.2018.10.041 ◽

2018 ◽

Vol 178 ◽

pp. 265-276 ◽

Cited By ~ 11

Author(s):

Márcio Higa ◽

Eduardo Y. Yamamoto ◽

Júlio César D. de Oliveira ◽

Wagner André S. Conceição

Keyword(s):

Industrial Plant ◽

Absorption Refrigeration ◽

Refrigeration System ◽

Ammonia Water ◽

Power Cycle ◽

Water Power ◽

Absorption Refrigeration System

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Thermodynamic Performance of Ammonia Water Power Cycle (AWPC)

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.246-247.1061 ◽

2012 ◽

Vol 246-247 ◽

pp. 1061-1065

Author(s):

Y.L. Gong ◽

C. Luo ◽

W.B. Ma

Keyword(s):

Ammonia Concentration ◽

Hot Water ◽

Performance Criteria ◽

Cycle Performance ◽

Ammonia Water ◽

Power Cycle ◽

Water Power ◽

Heat Efficiency ◽

Circulation Ratio ◽

Net Power Output

This paper introduces the ammonia water power cycle and presents the cycle performance criteria such as net power output, net power energy per ton of geothermal water, heat efficiency and heat exchanger area of per net power. The cycle influencing factors such as ammonia concentration, solution circulation ratio and hot water temperature are analyzed. Results show that there is an optimum range of ammonia concentration and solution circulation ratio. The power system exploits a new way for utilizing the mid-low temperature heat resource efficiently.

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Modernization of CHP Cycle in Sugar Complex

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.281.578 ◽

2013 ◽

Vol 281 ◽

pp. 578-581

Author(s):

Sanjay S. Bhagwat ◽

S.D. Pohekar ◽

A.M. Wankhade

Keyword(s):

Power Generation ◽

High Pressure ◽

Electric Power ◽

Sugar Cane ◽

Combined Heat And Power ◽

Power Ratio ◽

Heat Power ◽

Sugar Factory ◽

Power Cycle ◽

Surplus Power

Keywords: CHP, Bagasse, Heat Power Ratio, TCD Abstract: A huge potential for power generation from waste fuels exists within the sugar cane industry. Newly developed advanced high pressure boiler technology and utilizing modified combined heat and power cycle opens the way to fully exploit this potential, yielding more kWh’s of electric power per tonne of cane. This paper deals feasibility of bagasse based modified CHP cycle for 2500TCD sugar factory for surplus power generation.

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