Advanced exergoeconomic analysis of the multistage mixed refrigerant systems

Mehrpooya, Mehdi; Ansarinasab, Hojat

doi:10.1016/j.enconman.2015.07.026

Cited by 62 publications

(15 citation statements)

References 35 publications

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“…Different cryogenic natural gas plants were studied by exergetic and exergoeconomic techniques. [36][37][38] The results indicated that the refrigerant type has an influential role in process efficiency. An exergy analysis was performed for an LNG-based integrated plant, 39 implying that the columns and expansion valves yielded the highest exergy losses.…”

Section: Introductionmentioning

confidence: 95%

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A novel integrated hydrogen and natural gas liquefaction process using two multistage mixed refrigerant refrigeration systems

2019

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Summary The development and analysis of combined hydrogen and natural gas liquefaction process are reported. Two refrigeration cycles using mixed refrigerants (MRs) are employed. The developed process is capable of generating 290 tons hydrogen and 296 tons liquid natural gas on daily basis. The first refrigeration cycle of the introduced process liquefies 3.5 kg·s−1 normal gaseous hydrogen and 3.5 kg·s−1 normal natural gas at room temperature and 21 bar to −195°C with the consumed power of 0.643 kWh/kgLH2,kgLNG. The second refrigeration cycle cools down the hydrogen and natural gas to −253°C with the consumed power of 1.662 kWh/kgLH2,kgLNG, leading to a lower total consumed power than that of the identical liquefaction processes. The use of novel and appropriately mixed refrigerants based on the configuration, and the thermal design of expanders and heat exchangers fora wide range of temperatures are the innovations of the process. Additionally, the refrigerant compositions of refrigeration cycles are novel. The energy analysis indicated that the coefficient of performance (COP) for the developed process is 0.2442, which is notably high compared with the COP of other identical processes (typically less than 0.1797). The exergy analysis revealed that the overall exergy efficiency of the liquefaction process is 62.54%. Highlight edited A novel integrated hydrogen and natural gas liquefaction process is introduced. The process can generate 290 tons hydrogen and 296 tons liquid natural gas per day. Total power consumptions of the process are 4.165 kWh/kgLH2,kgLNG. Coefficient of performance (COP) for the developed process is 0.2442, which is notably high compared with the COP of other identical processes. Overall exergy efficiency of the liquefaction process is 62.54%.

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Section: Introductionmentioning

confidence: 95%

“…Exergy analysis is employed for different processes such as liquefaction plants and power generation plants. Different cryogenic natural gas plants were studied by exergetic and exergoeconomic techniques . The results indicated that the refrigerant type has an influential role in process efficiency.…”

Section: Introductionmentioning

confidence: 99%

A novel integrated hydrogen and natural gas liquefaction process using two multistage mixed refrigerant refrigeration systems

2019

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“…(7) [5], while the exergy destruction and thermal exergy rate of the condenser can be given as Eqs. (8) and (9) [6]:…”

Section: Energy and Exergy Analysis Of Vapor-compression Rsmentioning

confidence: 99%

“…The evaporator of the first refrigeration cycle is connected to the condenser of the next refrigeration system forming an interchange heat exchanger between the 2 cycles, as shown in Figure 5. Cascade refrigeration systems are mainly used for liquefaction of natural gas, hydrogen, and other gases [7][8][9]. The major benefit of this system is decreasing the compressor power and increasing the refrigeration load compared with a VCRS with large temperature and pressure difference, as shown in the T-s diagram of cascade system in Figure 5.…”

Section: Cascade Refrigeration Systemsmentioning

confidence: 99%

Energy and Exergy Analysis of Refrigeration Systems

Seyam¹

2020

Low-Temperature Technologies

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Refrigeration systems have the priority in design for residential and industrial applications. The chapter includes five major refrigeration systems: vaporcompression refrigeration; ammonia-water absorption refrigeration; gas refrigeration where standard air is the most popular refrigerant; multi-pressure refrigeration including multistage, cascade, and multipurpose refrigeration system; and heat pump systems. Energy and exergy analysis has been presented for most of the systems. The energetic and the exergetic COP for each system are presented. Renewable energy sources are also discussed including geothermal, solar, and wind energy, a with combination with refrigeration systems in different industrial and residential applications. The overall efficiency of the renewable systems is achieved to be more than 50% providing promising solutions for energy use and having a low environmental impact.

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“…Some research has been allocated to advanced exergetic analysis of gas turbine system [21][22][23], cogeneration system that combines vaporizing lique ed natural gas with the generation of electricity [24,25], combined cycle power plant [26][27][28], coal-red power plant [29,30], trigeneration system with a diesel-gas engine operating in a refrigerator plant building [31], ejector refrigeration system [32], multi-e ect evaporationabsorption heat pump desalination [33], geothermal power plant [34], and a ground-source heat pump dryer [35]. Also, some researchers have applied the advanced exergoeconomic analyses to assess the cogeneration system [36,37], externally red combined cycle power plant [38], geothermal power plant [39], combined cycle power plant [40], geothermal district heating system [41], electricity-generating facility with natural gas [42], multi-e ect evaporation-absorption heat pump desalination [33], refrigerant natural gas liquefaction processes [43,44], building heating system [45], and Gas Engine Heat Pump (GEHP) for food drying processes [46].…”

Section: Introductionmentioning

confidence: 99%

Advanced exergy and exergoeconomic analyses of Kalina cycle integrated with parabolic-trough solar collectors

Boyaghchi

Sabaghian

2016

Scientia Iranica

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This research deals with the performance and cost assessment of a Kalina cycle integrated with Parabolic-Trough Solar Collectors (PTSC) using advanced exergy and exergoeconomic based methods to identify the improvement potential and the interaction among system components. The exergy destruction rate and the total operating cost within the components are divided into endogenous/exogenous and unavoidable/avoidable parts. Results indicate that the avoidable exergy destruction cost rate (_ C AV D) of the entire system is only 29%, of which 32% is related to the components and 68% is due to the interaction between them. Also, the endogenous part of the exergy destruction cost for the entire system is notably high (87%) and the contribution of _ C AV D in the entire system is 32%, of which 68% is related to the endogenous part. Furthermore, 84% of the investment cost rate is associated with endogenous cost rate (_ Z EN) and 84% of the avoidable investment cost rate (_ Z AV D) is endogenous. It is revealed that the auxiliary heater and PTSC have the highest modi ed improvement potential with values of 66.9% and 59.5%, respectively.

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Advanced exergoeconomic analysis of the multistage mixed refrigerant systems

Cited by 62 publications

References 35 publications

A novel integrated hydrogen and natural gas liquefaction process using two multistage mixed refrigerant refrigeration systems

A novel integrated hydrogen and natural gas liquefaction process using two multistage mixed refrigerant refrigeration systems

Energy and Exergy Analysis of Refrigeration Systems

Advanced exergy and exergoeconomic analyses of Kalina cycle integrated with parabolic-trough solar collectors

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