Implementation of an embedded model predictive controller for a novel medical oxygen concentrator

Urich, Matthew D.; Vemula, Rama Rao; Kothare, Mayuresh V.

doi:10.1016/j.compchemeng.2022.107706

Cited by 5 publications

(2 citation statements)

References 8 publications

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“…Oxygen is the basic requirement for both a healthy and a diseased individual. There are certain medical diseases, especially cardiovascular respiratory disorders, where there is a requirement for pure or concentrated oxygen by the patient ( 1 , 2 ). This pure or concentrated oxygen is indeed known as medical oxygen, and in the absence of it, a patient may experience hypoxemia [low levels of oxygenated blood ( 3 )].…”

Section: Introductionmentioning

confidence: 99%

Recent trends in the nanozeolites-based oxygen concentrators and their application in respiratory disorders

et al. 2023

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Medical-grade oxygen is the basic need for all medical complications, especially in respiratory-based discomforts. There was a drastic increase in the demand for medical-grade oxygen during the current pandemic. The non-availability of medical-grade oxygen led to several complications, including death. The oxygen concentrator was only the last hope for the patient during COVID-19 pandemic around the globe. The demands also are everlasting during other microbial respiratory infections. The yield of oxygen using conventional molecular zeolites in the traditional oxygen concentrator process is less than the yield noticed when its nano-form is used. Nanotechnology has enlightened hope for the efficient production of oxygen by such oxygen concentrators. Here in the current review work, the authors have highlighted the basic structural features of oxygen concentrators along with the current working principle. Besides, it has been tried to bridge the gap between conventional oxygen concentrators and advanced ones by using nanotechnology. Nanoparticles being usually within 100 nm in size have a high surface area to volume ratio, which makes them suitable adsorbents for oxygen. Here authors have suggested the use of nano zeolite in place of molecular zeolites in the oxygen concentrator for efficient delivery of oxygen by the oxygen concentrators.

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Section: Introductionmentioning

confidence: 99%

Recent trends in the nanozeolites-based oxygen concentrators and their application in respiratory disorders

et al. 2023

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“…The design procedure of these controllers uses reduced models from the input and output data of the PSA process. The results are outstanding since they keep the process stable and attenuate disturbances at the process's input, reducing the effect of faults in the feed valve [19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Pressure Swing Adsorption Plant for the Recovery and Production of Biohydrogen: Optimization and Control

Brizuela-Mendoza,

Sorcia-Vázquez,

Rumbo-Morales

et al. 2023

Processes

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New biofuels are in demand and necessary to address the climate problems caused by the gases generated by fossil fuels. Biohydrogen, which is a clean biofuel with great potential in terms of energy capacity, is currently impacting our world. However, to produce biohydrogen, it is necessary to implement novel processes, such as Pressure Swing Adsorption (PSA), which raise the purity of biohydrogen to 99.99% and obtain a recovery above 50% using lower energy efficiency. This paper presents a PSA plant to produce biohydrogen and obtain a biofuel meeting international criteria. It focuses on implementing controllers on the PSA plant to maintain the desired purity stable and attenuate disturbances that affect the productivity, recovery, and energy efficiency generated by the biohydrogen-producing PSA plant. Several rigorous tests were carried out to observe the purity behavior in the face of changes in trajectories and combined perturbations by considering a discrete observer-based LQR controller compared with a discrete PID control system. The PSA process controller is designed from a simplified model, evaluating its performance on the real nonlinear plant considering perturbations using specialized software. The results are compared with a conventional PID controller, giving rise to a significant contribution related to a biohydrogen purity stable (above 0.99 in molar fraction) in the presence of disturbances and achieving a recovery of 55% to 60% using an energy efficiency of 0.99% to 7.25%.

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High purity oxygen production by pressure vacuum swing adsorption using natural zeolite

Al-Shawabkeh

Al-Najdawi

Olimat

2023

Results in Engineering

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Implementation of an embedded model predictive controller for a novel medical oxygen concentrator

Cited by 5 publications

References 8 publications

Recent trends in the nanozeolites-based oxygen concentrators and their application in respiratory disorders

Recent trends in the nanozeolites-based oxygen concentrators and their application in respiratory disorders

Pressure Swing Adsorption Plant for the Recovery and Production of Biohydrogen: Optimization and Control

High purity oxygen production by pressure vacuum swing adsorption using natural zeolite

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