Portable Oxygen Device-Presentation

Portable Oxygen Device-Presentation - Portable Oxygen...

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Portable Oxygen Generating Device Design Membrane and Pressure Swing Adsorption Technology Alternatives and Market Analysis
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Oxygen Design Group ± Adam Bortka ± TJ Chancellor ± Jon Demster ± Ashlee Ford ± Eli Kliewer ± Kara Shelden
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Introduction and Motivation
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Oxygen Therapy ± Hypoxemia: Lungs provide insufficient oxygen to bloodstream ± Oxygen treatment prescribed by a physician ± Elderly and disabled persons are most frequent users of portable oxygen devices ± Oxygen flow rates range from 0.5-8 L/min
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Existing Technologies ± Compressed Oxygen Tanks ± Liquid Oxygen ± Oxygen Concentrators
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Compressed Oxygen ± Compressed oxygen is delivered to patient in pressurized tanks ± No electricity, lightweight, high flow rates (>5 L/min) ± High purity ± Limited life of tanks ± Frequent tank replacement ± High-pressure tanks are hazardous
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Liquid Oxygen ± Large, stationary tank at home ± User can fill smaller, lightweight (5-13 lbs) portable tank ± No electricity, high flow rates, quiet ± High purity ± Stationary tank must be refilled frequently by technician ± Liquid oxygen will evaporate over time
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Oxygen Concentrators ± Electric oxygen system ± Provides oxygen by extracting it from the air ± Generally use pressure swing adsorption with zeolites ± Unlimited oxygen supply while connected to power source ± No refilling needed
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Oxygen Concentrators ± Most are not portable ² Size of a large suitcase ² Weight is greater than 50 lbs. ± Requires 250-400 W of power ± Motor increases electricity costs ± Motor is loud (>50 decibels) ± Requires backup power
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Oxygen Concentrators ± Oxygen purity ranges from 90-95% ± Flow rates range from 1-5 L/min ± Unable to achieve high oxygen flow rates (>5 L/min) ± Cost from $3,000-$5,000
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Oxygen Concentrators ± Lifestyle portable oxygen concentrator is currently on the market ± Uses molecular sieve technology combined with an oxygen conserving technology ± Dimensions are 5.5 in x7.5 in x16.5 in ± Weighs 9.5 lbs ± AC, DC (automobile), and battery powered
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Oxygen Concentrators ± Flow rates range from 1-5 L/min ± Only 90% ± 3% oxygen purity ± Produces 55 decibels ± Battery life only 50 minutes ± Takes 2-2.5 hours to charge battery ± Costs approximately $5,000 ± Recalled, but still on market
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Product Goals ± Current portable oxygen devices must be improved to increase performance and reliability ± Solid-oxide membrane and pressure-swing adsorption technologies will be investigated ± Develop a new portable oxygen device measuring 12”x7”x7” capable of achieving a 5 liter/minute flow rate and 94-99% oxygen purity
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Product Goals ± 6 hour battery life ± 40,000 hour service life ± Less than 10 lb. in weight ± Low noise output ± Less than $2,000 unit production cost
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Pressure Swing Adsorption Design
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Pressure Swing Adsorption ± System of two packed columns with component-selective zeolite ± Two stages in alternation: 1.
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This note was uploaded on 08/31/2011 for the course CHE 4273 taught by Professor Staff during the Spring '10 term at Oklahoma State.

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Portable Oxygen Device-Presentation - Portable Oxygen...

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