scholarly journals Preliminary performance estimates and value analyses for binary geothermal power plants using ammonia-water mixtures as working fluids

1983 ◽  
Author(s):  
C.J. Bliem
Keyword(s):  
Power Plants ◽  
Ammonia Water ◽  
Working Fluids ◽  
Geothermal Power ◽  
Performance Estimates

Organic Working Fluids for a Combined Power and Cooling Cycle

2005 ◽  
Vol 127 (2) ◽  
pp. 125-130 ◽  
Author(s):  
Sanjay Vijayaraghavan ◽  
D. Y. Goswami
Keyword(s):  
Power Plants ◽  
Thermodynamic Cycle ◽  
Working Fluid ◽  
Water Mixture ◽  
Heat Sources ◽  
Absorption Refrigeration ◽  
Ammonia Water ◽  
Working Fluids ◽  
Fluid Mixtures ◽  
Advantages And Disadvantages

A new thermodynamic cycle has been developed for the simultaneous production of power and cooling from low-temperature heat sources. The proposed cycle combines the Rankine and absorption refrigeration cycles, providing power and cooling as useful outputs. Initial studies were performed with an ammonia-water mixture as the working fluid in the cycle. This work extends the application of the cycle to working fluids consisting of organic fluid mixtures. Organic working fluids have been used successfully in geothermal power plants, as working fluids in Rankine cycles. An advantage of using organic working fluids is that the industry has experience with building turbines for these fluids. A commercially available optimization program has been used to maximize the thermodynamic performance of the cycle. The advantages and disadvantages of using organic fluid mixtures as opposed to an ammonia-water mixture are discussed. It is found that thermodynamic efficiencies achievable with organic fluid mixtures, under optimum conditions, are lower than those obtained with ammonia-water mixtures. Further, the refrigeration temperatures achievable using organic fluid mixtures are higher than those using ammonia-water mixtures.

scholarly journals Criteria for the Selection of Working Fluids for Geothermal Power Plants: A Case Study in Spain

Proceedings ◽  
2018 ◽  
Vol 2 (23) ◽  
pp. 1424
Author(s):  
Antonio Luis Marqués Sierra ◽  
Noe Anes Garcia
Keyword(s):  
Power Plant ◽  
Power Plants ◽  
Working Fluid ◽  
Design Decision ◽  
Working Fluids ◽  
Geothermal Power Plant ◽  
Binary Geothermal Power Plant ◽  
Geothermal Power ◽  
Selection Of

An important key in binary geothermal power plant is the selection of working fluid. This design decision has great implications for the operation of this power plant. While there are many options available for working fluids, there are also many restrictions on the selection that relate to the thermodynamic properties of fluids, as well as considerations of salt, safety and environmental impact.

Organic Working Fluids for a Combined Power and Cooling Cycle

2003 ◽  
Author(s):  
Sanjay Vijayaraghavan ◽  
D. Y. Goswami
Keyword(s):  
Power Plants ◽  
Thermodynamic Cycle ◽  
Working Fluid ◽  
Water Mixture ◽  
Heat Sources ◽  
Absorption Refrigeration ◽  
Ammonia Water ◽  
Working Fluids ◽  
Fluid Mixtures ◽  
Advantages And Disadvantages

A new thermodynamic cycle has been developed for the simultaneous production of power and cooling from low temperature heat sources. The proposed cycle combines the Rankine and absorption refrigeration cycles, providing power and cooling as useful outputs. Initial studies were performed with an ammonia-water mixture as the working fluid in the cycle. This work extends the application of the cycle to working fluids consisting of organic fluid mixtures. Organic working fluids have been used successfully in geothermal power plants, as working fluids in Rankine cycles. An advantage of using organic working fluids is that the industry has experience with building turbines for these fluids. A commercially available optimization program has been used to maximize the thermodynamic performance of the cycle. The advantages and disadvantages of using organic fluid mixtures as opposed to an ammonia-water mixture are discussed. It is found that thermodynamic efficiencies achievable with organic fluid mixtures, under optimum conditions, are lower than those obtained with ammonia-water mixtures. Further, the refrigeration temperatures achievable using organic fluid mixtures are higher than those using ammonia-water mixtures.

scholarly journals High-potential Working Fluids for Next Generation Binary Cycle Geothermal Power Plants

2013 ◽  
Author(s):  
Jalal Zia ◽  
Edip Sevincer ◽  
Huijuan Chen ◽  
Ajilli Hardy ◽  
Paul Wickersham ◽  
...  
Keyword(s):  
Power Plants ◽  
High Potential ◽  
Next Generation ◽  
Working Fluids ◽  
Binary Cycle ◽  
Geothermal Power

scholarly journals An investigation into the differing efficiencies of working fluids used in binary cycle power plants.

2017 ◽  
Vol 4 ◽  
pp. 155-162
Author(s):  
Alec Ian Perry-Cain
Keyword(s):  
Power Plant ◽  
Power Plants ◽  
Working Fluids ◽  
Geothermal Power Plant ◽  
Binary Cycle ◽  
Geothermal Power ◽  
R 134A ◽  
Working Parameters

In this paper the efficiency of three common working fluids in binary cycle geothermal power plants were compared by modeling the properties of the fluid within the working parameters of the Dora-II geothermal power plant. It was concluded that ammonia has the highest efficiency of the fluids and R-134a was the least efficient.

Mixtures of SF6–CO2 as working fluids for geothermal power plants

2013 ◽  
Vol 106 ◽  
pp. 243-253 ◽  
Author(s):  
Hebi Yin ◽  
Adrian S. Sabau ◽  
James C. Conklin ◽  
Joanna McFarlane ◽  
A. Lou Qualls
Keyword(s):  
Power Plants ◽  
Working Fluids ◽  
Geothermal Power
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