Zeotropic mixtures study in plate heat exchangers and ORC systems

Quentin, Blondel; Tauveron, Nicolas; Lhermet, Guillaume; Caney, Nadia

doi:10.1016/j.applthermaleng.2022.119418

Cited by 15 publications

(6 citation statements)

References 31 publications

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“…Such flexibility enables the optimization of the cycle for specific heat source temperatures. Recent research on organic fluids has addressed issues like their thermodynamic performance [4], actual greenhouse effect [5,6], the use of zeotropic mixtures as working fluids [7][8][9][10][11], and the effect of using super dry working fluids on system performance [12,13]. • A more compact design.…”

Section: Solar-thermal Energy Technologiesmentioning

confidence: 99%

Thermodynamic Modeling of a Solar-Driven Organic Rankine Cycle-Absorption Cooling System for Simultaneous Power and Cooling Production

Jiménez-García,

Moreno-Cruz,

Rivera

2024

Processes

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Humanity is facing the challenge of reducing its environmental impact. For this reason, many specialists worldwide have been studying the processes of production and efficient use of energy. In this way, developing cleaner and more efficient energy systems is fundamental for sustainable development. The present work analyzed the technical feasibility of a solar-driven power-cooling system operating in a particular location in Mexico. The theoretical system integrates organic Rankine and single-stage absorption cooling cycles. A parabolic trough collector and a storage system integrated the solar system. Its performance was modeled for a typical meteorological year using the SAM software by NREL. The analyzed working fluids for the organic cycle include benzene, cyclohexane, toluene, and R123, while the working fluid of the absorption system is the ammonia-water mixture. The cycle’s first and second-law performances are determined in a wide range of operating conditions. Parameters such as the energy utilization factor, turbine power, COP, and exergy efficiency are reported for diverse operating conditions. It was found that the highest energy utilization factor was 0.68 when the ORC utilized benzene as working fluid at ORC and ACS condensing temperatures of 80 °C and 20 °C, respectively, and at a cooling temperature of 0 °C. The best exergy efficiency was 0.524 at the same operating conditions but at a cooling temperature of −10 °C.

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Section: Solar-thermal Energy Technologiesmentioning

confidence: 99%

Thermodynamic Modeling of a Solar-Driven Organic Rankine Cycle-Absorption Cooling System for Simultaneous Power and Cooling Production

Jiménez-García,

Moreno-Cruz,

Rivera

2024

Processes

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“…By modifying the correlation available in the literature, the authors approximated their experimental data with a mean absolute error of 12.2%. Condensation of three pure fluids, Novec649, HFE7000 and HFE7100 and three of their zeotropic mixtures in small BPHE, was studied experimentally by Blondel et al [15]. The available literature correlations were examined, and a correction factor was introduced for one of those correlations, which allowed us to obtain a condensation heat transfer prediction with deviations up to ±50%.…”

Section: Recent Developments In Phe Condensers For Waste Heat Recover...mentioning

confidence: 99%

PHE (Plate Heat Exchanger) for Condensing Duties: Recent Advances and Future Prospects

et al. 2023

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Increasing energy usage efficiency requires enhanced heat energy recuperation between process streams in the industry and civic sector with waste heat utilization. The condensation of different vapours is the process encountered in many industrial applications. Increasing the heat recuperation in this process is possible with efficient heat transfer equipment, among which a Plate Heat Exchanger (PHE) is at the leading position. A number of research works have been conducted in recent years concerning construction development and heat transfer enhancement in conditions of limited pressure drop to increase PHE performance in condensation processes. The results of studies on heat transfer and pressure drop in the two-phase condensing flow inside channels of PHE with different geometries of corrugations are discussed. In many implementations, the total pressure drop allowable for gaseous streams in heat exchangers is relatively small. The structure of two-phase flow in PHE channels of complex geometry is very different than in tubes and flat wall channels. The relative differences in approaches to enhance PHE performance in condensation processes based on its modelling, optimisation and design are analyzed. The directions and prospects for future developments are formulated, and potential savings for the economy and the environmental footprint is presented.

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“…From the fertilizer process wastewater storage discharged from the high-conditioned water (120 ℃ -145 ℃ ) through the pipeline into the hot water pump, under the action of several pumps to form a certain pressure and temperature of the hot water, the water supply temperature of 145 ℃, the pressure of 1.1 MPa, into the evaporator so that the organic workpiece heat-absorbing evaporation, discharged back to the temperature of 120 ℃, the pressure of 1.0 MPa, and then out of the evaporator and then into the Cyclic fertilizer manufacturing process is used, and the cycle is repeated [21].…”

Section: Heat Source System Modelingmentioning

confidence: 99%

Research on Organic Rankine Cycle-Based Industrial Circulating Water Cogeneration System

Yang

2023

JERR

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A fertilizer plant wastewater recycling as a research object, the establishment of ORC (Organic Rankine Cycle, referred to as ORC) cogeneration system, using MATLAB software to simulate the operation of the system was found to change the evaporation temperature, condensing temperature, superheat and subcooling degree of the four factors will have an impact on the performance of the system, in which the evaporation temperature and degree of superheat to improve the performance of the system, the condensing temperature and degree of subcooling have a negative effect on the system efficiency. The evaporation temperature and superheat are favorable factors for improving the system performance, while the condensation temperature and subcooling degree adversely affect the system efficiency. Through the verification calculation of specific working conditions, under the conditions of evaporating temperature 110℃, condensing temperature 27℃, superheating degree 8℃ and subcooling degree 3℃, the thermal efficiency of the system can reach about 25%, and the energy efficiency reaches about 45%. The experimental results show that this designed ORC cogeneration system is able to recycle industrial waste heat to a greater extent, which is of great significance to improve the efficiency of energy utilization.

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Zeotropic mixtures study in plate heat exchangers and ORC systems

Cited by 15 publications

References 31 publications

Thermodynamic Modeling of a Solar-Driven Organic Rankine Cycle-Absorption Cooling System for Simultaneous Power and Cooling Production

Thermodynamic Modeling of a Solar-Driven Organic Rankine Cycle-Absorption Cooling System for Simultaneous Power and Cooling Production

PHE (Plate Heat Exchanger) for Condensing Duties: Recent Advances and Future Prospects

Research on Organic Rankine Cycle-Based Industrial Circulating Water Cogeneration System

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