Modeling and analysis of a printed circuit heat exchanger for supercritical CO2 power cycle applications

A.R.Meshram,; Jaiswal, Abhishek; Khivsara, Sagar D.; Ortega, Jesus; Ho, Clifford K.; Bapat, Rucha Arun; Dutta, Pradip

doi:10.1016/j.applthermaleng.2016.05.033

Cited by 190 publications

(48 citation statements)

References 13 publications

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“…, while for the hot fluid, they are = 630 and = 9 . In order to validate the numerical model used, this study tried to emulate the results of the investigation carried out by Meshram et al [30] on CFD simulation of CO2 supercritical in a PCHE. The reference study cited analyzes the behavior of pure supercritical carbon dioxide for different configurations of the printed circuit exchanger and different temperature ranges.…”

Section: System Description Pchementioning

confidence: 99%

Supercritical CO2 Binary Mixtures for Recompression Brayton s-CO2 Power Cycles Coupled to Solar Thermal Energy Plants

Tafur-Escanta¹,

Valencia-Chapi²,

López‐Paniagua³

et al. 2021

Preprint

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In this work, an evaluation and quantification of the impact of using mixtures based on Supercritical Carbon Dioxide "s-CO2" (s-CO2/COS, s-CO2/H2S, s-CO2/NH3, s-CO2/SO2) are made as a working fluid in simple and complex recompression Brayton s-CO2 power cycles configurations that have pressure drops in their components. These cycles are coupled to a solar thermal plant with parabolic-trough collector (PTC) technology. The methodology used in the calculation performance is to establish values of the heat recuperator total conductance (UAtotal) between 5 and 25 MW/K. The main conclusion of this work is that the cycle's efficiency has improved due to s-CO2 mixtures as working fluid; this is significant compared to that obtained using the standard fluid (pure s-CO2). Furthermore, a techno-economic analysis is carried out that compares each configuration's costs using pure s-CO2 and a mixture of s-CO2/COS with a molar fraction (70/30) respectively as working fluid where relevant results are obtained. These results show that the best configuration in terms of thermal efficiency and cost is the RCC-RH for pure sCO2 with values of 41.25% and 2811 $/kWe, while for the mixture sCO2/COS, the RCC-2RH configuration with values of 45, 05% and 2621 $/kWe is optimal. Using the mixture costs 6.75% less than if it is used the standard fluid (s-CO2).

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Section: System Description Pchementioning

confidence: 99%

Supercritical CO2 Binary Mixtures for Recompression Brayton s-CO2 Power Cycles Coupled to Solar Thermal Energy Plants

Tafur-Escanta¹,

Valencia-Chapi²,

López‐Paniagua³

et al. 2021

Preprint

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“…Number The mass and areas of heat exchangers in Table 3 are determined based on the heat exchanger design according to the mathematical models of different heat exchanger types. Compared to the conventional shell-and-tube heat exchanger, the Print Circuit Heat Exchanger (PCHE) shows higher heat transfer performances with a larger operation range (up to 980 • C and 96.5 MPa), which has been widely suggested and evaluated in previous studies [35][36][37]. Thus, PCHE is chosen as the heat exchangers (HTR, LTR, DHE, and cooler) in the SCO 2 topping cycle.…”

Section: Component Economic Parametersmentioning

confidence: 99%

Thermodynamic and Exergoeconomic Analysis of a Supercritical CO2 Cycle Integrated with a LiBr-H2O Absorption Heat Pump for Combined Heat and Power Generation

Yang

Wang

et al. 2020

Applied Sciences

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In this paper, a novel combined heat and power (CHP) system is proposed in which the waste heat from a supercritical CO2 recompression Brayton cycle (sCO2) is recovered by a LiBr-H2O absorption heat pump (AHP). Thermodynamic and exergoeconomic models are established on the basis of the mass, energy, and cost balance equations. The proposed sCO2/LiBr-H2O AHP system is examined and compared with a stand-alone sCO2 system, a sCO2/DH system (sCO2/direct heating system), and a sCO2/ammonia-water AHP system from the viewpoints of energy, exergy, and exergoeconomics. Parametric studies are performed to reveal the influences of decision variables on the performances of these systems, and the particle swarm optimization (PSO) algorithm is utilized to optimize the system performances. Results show that the sCO2/LiBr-H2O AHP system can obtain an improvement of 13.39% in exergy efficiency and a reduction of 8.66% in total product unit cost compared with the stand-alone sCO2 system. In addition, the sCO2/LiBr-H2O AHP system performs better than sCO2/DH system and sCO2/ammonia-water AHP system do, indicating that the LiBr-H2O AHP is a preferable bottoming cycle for heat production. The detailed parametric analysis, optimization, and comparison results may provide some references in the design and operation of sCO2/AHP system to save energy consumption and provide considerable economic benefits.

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“…Kim et al made empirical correlations of heat transfer and pressure drop for zigzag PCHE with wide Reynolds numbers and compared them with previous correlations numerically. Meshram et al evaluated the thermal‐hydraulic characteristics of straight and zigzag PCHE at high pressures and temperatures; they presented both the empirical correlations and the performance parameters for different temperatures and channel sizes. Aneesh et al investigated the effects of the developed numerical model, channel geometries, operating conditions, and nonuniform thermo‐physical property on the thermal‐hydraulic characteristics of PHCE.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical study on thermal‐hydraulic performance of printed circuit heat exchanger for liquefied gas vaporization

Zhao

Chen

Zhang

et al. 2019

Energy Science & Engineering

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The thermal-hydraulic performance of printed circuit heat exchanger (PCHE) through an experimental vaporization process of supercritical nitrogen was investigated. The inlet temperature of supercritical nitrogen was controlled between 113 K and 129 K, while its pressure was controlled between 4.5 MPa and 6 MPa. The mass of supercritical nitrogen corresponds to the turbulent state on the cold side of PCHE, which was maintained at 299.94 kg/h. A numerical processing of the same supercritical nitrogen flow through a single channel of PCHE cold side was presented. The numerical results were validated by comparison with the experimental data. Both experimental and numerical results showed that the increased inlet supercritical nitrogen pressure improved the heat transfer performance and pressure drop decreased with increasing the pressure at the PCHE cold side. Furthermore, the Fanning friction coefficient (f) and the Nusselt number (Nu) of supercritical nitrogen flow obtained by numerical simulation and empirical correlation were compared. K E Y W O R D Snitrogen gasification, printed circuit heat exchanger, supercritical fluid, thermal-hydraulic performance How to cite this article: Zhao Z, Chen X, Zhang X, Ma X, Yang S. Experimental and numerical study on thermal-hydraulic performance of printed circuit heat exchanger for liquefied gas vaporization. Energy Sci Eng. 2020;8:426-440. https ://doi.

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Modeling and analysis of a printed circuit heat exchanger for supercritical CO2 power cycle applications

Cited by 190 publications

References 13 publications

Supercritical CO2 Binary Mixtures for Recompression Brayton s-CO2 Power Cycles Coupled to Solar Thermal Energy Plants

Supercritical CO2 Binary Mixtures for Recompression Brayton s-CO2 Power Cycles Coupled to Solar Thermal Energy Plants

Thermodynamic and Exergoeconomic Analysis of a Supercritical CO2 Cycle Integrated with a LiBr-H2O Absorption Heat Pump for Combined Heat and Power Generation

Experimental and numerical study on thermal‐hydraulic performance of printed circuit heat exchanger for liquefied gas vaporization

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