Compact Heat Exchangers Application in NGNP

Zohuri, Bahman

doi:10.1007/978-3-319-29835-1_7

Cited by 10 publications

(10 citation statements)

References 8 publications

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“…Convergency is reached on the freeflow area to guarantee the design with desired % pressure drop in the LP side. [66] Figure 7. Segmentation procedure adopted for the PCHE design.…”

Section: Pche Recuperator Design Methodologymentioning

confidence: 99%

On the Design of Recuperator for Transcritical Cycle Adopting CO₂‐Based Mixture as Working Fluid: A Focus on Transport Properties Prediction

Doninelli,

Di Marcoberardino

2023

Energy Tech

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Transcritical cycles working with CO2‐based mixtures gain considerable attention due to thermodynamic efficiency gain compared to pure sCO2 in hot environments. Previous literature works prove that the adoption of CO2 mixtures provides a reduction of the levelized cost of electricity in concentrated solar power applications and medium–high temperature heat recovery. However, for techno‐economic analysis and heat exchanger design, proper evaluation of transport properties of the CO2‐based mixtures in power cycle conditions is necessary. Herein, it deals with the analysis of the proper transport properties models for CO2 mixtures to assess their actual thermal behavior. A literature review on transport properties models, and their validation with available experimental data, proves that the friction theory is suitable for CO2 blended with dopants having high molecular complexity. The impact of the different model selection on the recuperator sizing, considering optimized power cycle conditions, is assessed on the CO2 mixtures with hexafluorobenzene and decane: The TRAPP and Chung–Lee–Starling models are imported from Aspen Plus, while the friction theory model is implemented and calibrated in an in‐house MATLAB code. The optimal design of the recuperator for the CO2 + C6F6 mixture in a 100 MWel power block coupled with a solar power plant located in Sevilla is carried out.

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“…Convergency is reached on the freeflow area to guarantee the design with desired % pressure drop in the LP side. [66] Figure 7. Segmentation procedure adopted for the PCHE design.…”

Section: Pche Recuperator Design Methodologymentioning

confidence: 99%

On the Design of Recuperator for Transcritical Cycle Adopting CO₂‐Based Mixture as Working Fluid: A Focus on Transport Properties Prediction

Doninelli,

Di Marcoberardino

2023

Energy Tech

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“…Whereas, exploring in energy resources effective used obtainable energy can be add more effective cost to meet the energy demand [1][2][3]. Different types of heat exchangers are extensively employed in frequent industries applications for instance power plants, oil, food industry, refrigeration and various process [4]. Heat exchangers are expenditure apparatus in the industry [5][6], plays significant part in electric and chemical industrial region [7].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Internal Thermo-Hydraulic Flow and Heat Transfer Improvement in a Three-Dimensional Circular Corrugated Tube Surfaces Based on Numerical Simulation and Design of Experiment

Al-Obaidi

2024

Preprint

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The effect of different tubes geometrical parameters on its flow field analysis and thermal heat transfer performance are investigated in current research work. The hydraulic thermal fluid coupling with computational simulations are applied. The numerical results are solving used flow transport and heat transfer equations then these results are validated with available experimental data. Behaviour of hydraulic and thermal flow in the corrugated tube are discussed with different geometrical parameters position and shape. Turbulent flow in tube is calculated in 3D numerical simulations with optimisation of multi-objective algorithm are analysed. The influences of various design parameters for instance, number of corrugated rings around tube, distance between each corrugated ring, diameter of ring and pitch of ring are investigated firstly in flow field and then optimised by using design of experiment (DOE). The influence of flow structural modifications such as static pressure, dynamic pressure, and pressure drop are taken into consideration as analysed performance parameters. DOE Method is investigated based on implements and variances the L16 orthogonal arrays is chosen as the experimental strategy. Furthermore, the optimisation results found that the maximum value of pressure difference was for corrugated diameter. The numerical method using DOE has enhanced heat transfer rate as compared to the smooth pipe. The outcomes illustrate that the performance evaluation factor (PEF) ratio of the corrugated pipe with different geometrical configuration is changed and increased as the corrugated pipe geometrical changed and the value of PEF is more than 1.3.

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“…However, increasing the size of the heat exchanger will increase both its volume and its cost. If you want to evenly heat your material throughout, you need to use a heat exchanger procedure [1,2]. Nanofluids have become used in many practical applications in all areas of heat transfer, and these applications include air conditioning, ventilation, refrigeration, heating, automobile cooling system, devices of electronic, renewable energy systems, nuclear systems, biomedical applications, automobile cooling and This work is licensed under a Creative Commons Attribution 4.0 International License.…”

Section: Introductionmentioning

confidence: 99%

“…ZnO nanofluid is used as the cold fluid and water serving as the base fluid, nanoparticles of 30 nm diameter are utilized, with mass concentrations of 0.5 percent to 1 percent. The volume flow rate range is from 2 liters per minute to 6 liters per minute and hot water enters the shell on the outer pipe at a temperature of 65°C, Table (1). Al2O3/ water 0.6% Higher the heat transfer at 26% 5 [9] Al2O3/water (20nm) 0.1-0.2)%) double-pipe heat exchanger…”

Section: Introductionmentioning

confidence: 99%

“…The test system illustrated in Figure(1) consists of double-tube heat exchangers (two concentric tubes) and two 6-liter thick plastic basins, one of them is to heat the water to 70 degrees Celsius using an electrical coil of 3000 watts before pumping it into the primary heat exchanger. Thesecond basin was used to collect the Nano scale water from the secondary exchanger and continue mixing it with an electric mixer immersed in it to ensure the homogeneous suspension and distribution of the nanoparticles in the water, as well as to maintain the temperature of the nanoparticles at 20°C by cooling it in an airtight plastic container container with ice inside the tank.…”

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confidence: 99%

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Improve Performance of Double Pipe Heat Exchanger by Using Zno/Water Nanofluid

Hussein

Issa²

2023

Journal of Petroleum Research and Studies

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The heat transfer of double tube heat exchanger under counter flow is experimentally investigated. Nanofluid and the pure water are used as cold and hot fluids respectively. ZnO nanoparticles of 30 nm diameter are dispersed in water to prepare nanofluid with mass concentrations of 0.5 and 1%. Cold nanofluid is flowing through the inner tube heat exchanger with 20°C temperature under 2, 4 and 6 lpm volume flow rate. The hot water enters the annular space of the heat exchanger at a temperature of 65°C and 4 lpm volume flow rate. To improve the performance of the heat exchanger, the experimental findings achieved using this sort of nanofluid will be compared to those obtained using pure water. The outcomes showed that employing nanofluid as the working fluid improved performance. When employing nanofluid, the highest heat exchanger effectiveness is 40 % for nanoparticles concentration of 0.5 % per mass and 54 % (with a mass concentration of 1 %) with a volume flow rate of 2 lpm.

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Compact Heat Exchangers Application in NGNP

Cited by 10 publications

References 8 publications

On the Design of Recuperator for Transcritical Cycle Adopting CO₂‐Based Mixture as Working Fluid: A Focus on Transport Properties Prediction

On the Design of Recuperator for Transcritical Cycle Adopting CO₂‐Based Mixture as Working Fluid: A Focus on Transport Properties Prediction

Characterization of Internal Thermo-Hydraulic Flow and Heat Transfer Improvement in a Three-Dimensional Circular Corrugated Tube Surfaces Based on Numerical Simulation and Design of Experiment

Improve Performance of Double Pipe Heat Exchanger by Using Zno/Water Nanofluid

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Compact Heat Exchangers Application in NGNP

Cited by 10 publications

References 8 publications

On the Design of Recuperator for Transcritical Cycle Adopting CO2‐Based Mixture as Working Fluid: A Focus on Transport Properties Prediction

On the Design of Recuperator for Transcritical Cycle Adopting CO2‐Based Mixture as Working Fluid: A Focus on Transport Properties Prediction

Characterization of Internal Thermo-Hydraulic Flow and Heat Transfer Improvement in a Three-Dimensional Circular Corrugated Tube Surfaces Based on Numerical Simulation and Design of Experiment

Improve Performance of Double Pipe Heat Exchanger by Using Zno/Water Nanofluid

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On the Design of Recuperator for Transcritical Cycle Adopting CO₂‐Based Mixture as Working Fluid: A Focus on Transport Properties Prediction

On the Design of Recuperator for Transcritical Cycle Adopting CO₂‐Based Mixture as Working Fluid: A Focus on Transport Properties Prediction