Analysis of power and cooling cogeneration using ammonia-water mixture

Padilla, Ricardo Vásquez; Demirkaya, Gökmen; Goswami, D. Yogi; Stefanakos, Elias; Rahman, Muhammad M.

doi:10.1016/j.energy.2010.09.042

Cited by 121 publications

(37 citation statements)

References 32 publications

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“…It is seen from Figure 8a that for the boiler temperature of 175°C and strong solution concentration of 0.1 kg NH 3 /kg solution, the work output increases significantly for the two stage case compared to single stage case. 1 125 1 1 1 1 1 1 1 1 150 2 1 1 1 1 1 1 1 175 2 2 1 1 1 1 1 1 200 2 2 2 2 1 1 1 1 225 2 2 2 2 2 2 2 250 2 2 2 2 2 2 275 2 2 2 2 3 300 3 3 3 3 325 3 3 3 Padilla et al [25] carried out a power and co-generation analysis of the Goswami cycle with an internal rectification cooling source. In this study, for a boiler temperature between 150-160°C, the effective first law efficiency is between 14-15% for a turbine efficiency of 75%, and between 19-20% for a turbine efficiency of 100%.…”

Section: Net Work Outputmentioning

confidence: 99%

“…The experimental and theoretical analysis conducted by Martin and Goswami [24] about the performance of the cycle led to a new measure of the effectiveness of cooling production. New configurations of the Goswami cycle have also been proposed and analyzed from the first and second law point of view [25,26]. A comprehensive exergy analysis of two alternative configurations of the cycle was presented by Fontalvo et al [27].…”

Section: Introductionmentioning

confidence: 99%

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Thermal and Exergetic Analysis of the Goswami Cycle Integrated with Mid-Grade Heat Sources

Demirkaya¹,

Padilla

Fontalvo

et al. 2017

Entropy

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This paper presents a theoretical investigation of a combined Power and Cooling Cycle that employs an Ammonia-Water mixture. The cycle combines a Rankine and an absorption refrigeration cycle. The Goswami cycle can be used in a wide range of applications including recovering waste heat as a bottoming cycle or generating power from non-conventional sources like solar radiation or geothermal energy. A thermodynamic study of power and cooling co-generation is presented for heat source temperatures between 100 to 350°C. A comprehensive analysis of the effect of several operation and configuration parameters, including the number of turbine stages and different superheating configurations, on the power output and the thermal and exergy efficiencies was conducted. Results showed the Goswami cycle can operate at an effective exergy efficiency of 60-80% with thermal efficiencies between 25 to 31%. The investigation also showed that multiple stage turbines had a better performance than single stage turbines when heat source temperatures remain above 200°C in terms of power, thermal and exergy efficiencies. However, the effect of turbine stages is almost the same when heat source temperatures were below 175°C. For multiple turbine stages, the use of partial superheating with Single or Double Reheat stream showed a better performance in terms of efficiency. It also showed an increase in exergy destruction when heat source temperature was increased.

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Section: Net Work Outputmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Thermal and Exergetic Analysis of the Goswami Cycle Integrated with Mid-Grade Heat Sources

Demirkaya¹,

Padilla

Fontalvo

et al. 2017

Entropy

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“…Goswami et al, in their article, have present a novel combined power and cooling cycle. The Goswami cycle has the first and the second law efficiencies of about 23% and 69%, respectively [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Exergy Analysis of a Combined Power and Cooling Cycle

Karaali

2016

Acta Phys. Pol. A

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Ammonia-water power cycles are important for efficient utilization of low temperature heat sources such as geothermal, solar, waste heat sources, etc. For some special conditions ammonia-water power cycle is an important and economical option. This paper presents an exergetic analysis of a combined power and cooling cycle that uses ammonia-water mixture as working fluid. Such cycles, use solar or geothermal energy or waste heat energy from a conventional power cycle. Ammonia-water power cycle can be used as independent cycles to provide power output and cooling. For a range (25-55 Bar) of boiler pressure the performance of the combined power and cooling cycle is investigated. The exergy of the boiler is very low compared to its energy. There is a boiling process and a heat transfer process at low temperature, both of which destruct the energy given to the boiler, so that the energy efficiency is low; however the exergy efficiency is higher than the energy efficiency. Increasing the turbine inlet pressure decreases the energy and exergy efficiencies.

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“…Some of these new cycles are designed to operate with medium or low temperature heat sources, and theoretical investigations have demonstrated their potentials [2]. One of their characteristics is the use of a binary mixture as the working fluid, so as to increase thermal efficiency [3].…”

Section: Introductionmentioning

confidence: 99%

Energy and Exergy Analyses of a New Combined Cycle for Producing Electricity and Desalinated Water Using Geothermal Energy

et al. 2014

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Abstract:A new combined cogeneration system for producing electrical power and pure water is proposed and analyzed from the viewpoints of thermodynamics and economics. The system uses geothermal energy as a heat source and consists of a Kalina cycle, a LiBr/H 2 O heat transformer and a water purification system. A parametric study is carried out in order to investigate the effects on system performance of the turbine inlet pressure and the evaporator exit temperature. For the proposed system, the first and second law efficiencies are found to be in the ranges of 16%-18.2% and 61.9%-69.1%, respectively. For a geothermal water stream with a mass flow rate of 89 kg/s and a temperature of 124 °C, the maximum production rate for pure water is found to be 0.367 kg/s.

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Analysis of power and cooling cogeneration using ammonia-water mixture

Cited by 121 publications

References 32 publications

Thermal and Exergetic Analysis of the Goswami Cycle Integrated with Mid-Grade Heat Sources

Thermal and Exergetic Analysis of the Goswami Cycle Integrated with Mid-Grade Heat Sources

Exergy Analysis of a Combined Power and Cooling Cycle

Energy and Exergy Analyses of a New Combined Cycle for Producing Electricity and Desalinated Water Using Geothermal Energy

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