Optimization of cogeneration for power and desalination to satisfy the demand of water and power at high ambient temperatures

Izadpanah, Farhad; Mokhtari, Hamid; Izadpanah, S.; Sadeghi, MS.

doi:10.1016/j.applthermaleng.2022.119014

Cited by 5 publications

(2 citation statements)

References 53 publications

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“…Also, cooling the air entering the turbine increases the thermal efficiency from 35.5% to 36.1%. 12 HRSG boilers have been investigated by Ganapathy from the scientific point of view based on the temperature difference of the pinch points in different points of the boiler. Concerning the great importance of the pinch and approach points in the design of HRSG boilers, engineering problems, and also their remarkable role in correct calculations of system parameters are discussed here; one of the mentioned points here is paying attention to the design of the boiler in a nonnominal load of the power plant.…”

Section: Introductionmentioning

confidence: 99%

“…They showed that genetic algorithm leads to increasing net freshwater production and net power. Also, cooling the air entering the turbine increases the thermal efficiency from 35.5% to 36.1% 12 . HRSG boilers have been investigated by Ganapathy from the scientific point of view based on the temperature difference of the pinch points in different points of the boiler.…”

Section: Introductionmentioning

confidence: 99%

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Multiobjective optimization of heat recovery steam generator in a combined cycle power using genetic algorithm

Mehrpanahi,

Akbari Vakilabadi,

Nikbakht Naserabad

et al. 2023

Energy Science & Engineering

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Due to the increasing demand for electrical energy, efforts to increase the thermal efficiency of the steam and gas power plants have led to extensive reform in these cycles. One of these common reforms is employing a conventional combined gas‐steam cycle. In combined cycle power plants that are built to produce power, a significant portion of the input energy is lost. In this research to achieve the thermodynamic properties of a combined cycle power plant after modeling the cycle and determining the cycle potential independent variables, multiobjective optimization by imposing restrictions on cost functions and changing them concerning exergy efficiency has been analyzed. The results show that increasing the parameters of superheated temperature, pinch point temperature difference, pump exhaust pressure, and condenser inlet flow rate improves the system performance and increases exergy efficiency. It is shown by two‐objective optimization that when costs are increased up to 40%, exergy efficiency is increased, and when an increase is more than 40% repeated results would be obtained. Applying costs lower than 5% is not considered according to software limitations. Also, the results show that it is possible to increase exergy efficiency up to 79.7% with a 40% investment cost.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Multiobjective optimization of heat recovery steam generator in a combined cycle power using genetic algorithm

Mehrpanahi,

Akbari Vakilabadi,

Nikbakht Naserabad

et al. 2023

Energy Science & Engineering

View full text Add to dashboard Cite

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The effect of ambient temperature on dynamic energy–exergy analysis of a d-type boiler during cold start-up

Hashemi Beni,

Emami,

Meghdadi Isfahani

et al. 2024

J Therm Anal Calorim

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4E investigation of solar-driven RO and RRO osmotic desalination systems from water, energy, and environment relevance perspective: a comparative approach

Naminezhad

Mehregan

2022

Appl Water Sci

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In this paper, two osmotic desalination systems, namely, plug reverse osmosis (RO) and recirculation reverse osmosis (RRO) systems integrated with solar and organic Rankine cycle (ORC), have been presented. These systems are modeled and optimized from energy, exergy, economic, and environmental perspectives. The objective functions are the concentration disposal index (CDI) and unit cost of the product (fresh water) (UPC). The results show that the RO cycle has an optimal configuration grounded on max (CDI) and min (UPC). At identical UPC, the environmental effects of the RO system were less than those of the RRO. This is attributed to higher recovery with increasing temperature of discharged water into the sea in a smaller area and at a higher rate. For the RO system, the values for CDI, exergy efficiency, and fresh water production are 0.193, 45.6%, and 13.1 m3/h for R245ca fluid. Also, the share of RO and RRO in the total TAC costs is 19.44% and 17.33%, respectively. The R245ca working fluid is selected for both cycles, which is more productive than the other fluids. The results show that more than 50% recovery is achieved for the SW30HR-320 membrane at the optimum for the RO system.

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Optimization of cogeneration for power and desalination to satisfy the demand of water and power at high ambient temperatures

Cited by 5 publications

References 53 publications

Multiobjective optimization of heat recovery steam generator in a combined cycle power using genetic algorithm

Multiobjective optimization of heat recovery steam generator in a combined cycle power using genetic algorithm

The effect of ambient temperature on dynamic energy–exergy analysis of a d-type boiler during cold start-up

4E investigation of solar-driven RO and RRO osmotic desalination systems from water, energy, and environment relevance perspective: a comparative approach

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