Status of the International Space Station Regenerative ECLSS Water Recovery and Oxygen Generation Systems

Bagdigian, Robert M.; Cloud, Dale

doi:10.4271/2005-01-2779

Cited by 20 publications

(3 citation statements)

References 7 publications

(1 reference statement)

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“…Of course, the delivery of oxygen to an interstellar spaceship is not realistic, but nothing prevents the crew to store pressurized tanks in case of a disaster. To provide a continuous flow of oxygen, generators such as the Russian-made Elektron-VM [42,43] and the United States Environmental Control and Life Support System (ECLSS, [44,45]) are used. The oxygen generators option relies on water electrolysis that splits H 2 0 molecules into hydrogen gas and oxygen gas such as:…”

Section: How To Recycle and Produce Breathable Gases?mentioning

confidence: 99%

Water and air consumption aboard interstellar arks

Marin,

Beluffi

2020

Preprint

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The architecture of a large interstellar spaceship, which is capable of serving as a living environment for a population over many generations, is mainly dictated by the needs of said population in terms of food, water and breathable gases. These resources cannot be stored for the entire duration of a journey that goes on for several centuries, so they must be produced in situ. In order to determine the quantities necessary for the survival of the population, it is imperative to precisely estimate their needs. In this article, we focus on accurate simulations of the water and air (oxygen) requirements for any type of population in order to be able to provide precise constraints on the overall architecture of an interstellar ark (the requirements in terms of food having already been studied in a previous publication). We upgrade our agent-based, numerical, Monte Carlo code HERITAGE to include human physiological needs. Our simulations show that, for a crew of about 1 100 crew members (each characterized with individual anthropometric and biological data), 1.8 × 10 8 litres of oxygen are annually required, together with 1.1 × 10 6 litres of water. Those results do not account for oxygen and water used in growing plants, but they give us an insight of how much resources are needed in the spaceship. We also review the best methods for generating water from waste gases (namely carbon dioxide and dihydrogen) and how such system could complement the oxygen-supplying biospheres inside multi-generational spaceship to form a closed and controlled environment.

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Section: How To Recycle and Produce Breathable Gases?mentioning

confidence: 99%

Water and air consumption aboard interstellar arks

Marin,

Beluffi

2020

Preprint

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“…5,6,7,8,9,10,11,12,13,14,15,16,17 In order to best understand these technologies as a whole, a technology impact matrix (TIM) was created, which was used to quantify the relationships between individual technologies and each of the stocks being analyzed. Table 1 presents a look at these relationships per unit power; that is, the effect that an input of 1 unit of power (1 W) will have on the different stocks.…”

Section: Iiie Technology Assessmentmentioning

confidence: 99%

Utilization of System Dynamics to Model a Self-Sustained Mars Surface Colony

Charront

Moss

Edwards

et al. 2015

AIAA SPACE 2015 Conference and Exposition

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The National Institute of Aerospace hosted the 2015 Revolutionary Aerospace Systems Concepts -Academic Linkage competition, whose objective included establishing a fully functional self-sustaining Mars surface colony by the year 2054. 1 Altogether, this task has been broken down into several different components, one involving the development and deployment of colony infrastructure over a 40-year period, and the other involving the utilization of system dynamics for studying the steady-state behavior of all surface colony operations. These surface colony operations prove to be multi-faceted, and are comprised of a wide range of important factors. Some of these factors include colony structure, agriculture and food production, power systems, and communications, all of which can be satisfied by a variety of unique processes. This paper details the work done to optimize the system dynamics of all surface colony operations in an effort to find the optimal combination of different technologies that is both self-sustaining and satisfies all competition requirements, an effort carried out through the utilization of both Matlab and Simulink.

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“…Microbial Check Valve (MCV) (see Figure 2). 15,16 The WPA has a recirculation setup; the water that does not pass the quality monitoring is redirected to the system's first stage. The IXB supplies iodine ions to the treated water after absorbing undesired cations and anions from previous water-treatment steps.…”

Section: Introductionmentioning

confidence: 99%

Dialysis-based Passive Biocide Delivery System: An Exploratory Analysis on the Development of a Silver Dosing Alternative for Spacecraft Potable Water Systems

Garcia Fernandez

2024

Preprint

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This paper describes the use of a dialysis-based passive dosing system for silver ion delivery as a biocide for potable water systems in spacecraft and extraterrestrial bases. A silver dosing device has been developed for continuous water treatment, based on the International Space Station Water Processor Assembly framework. The Passive Biocide Delivery System is designed to supply a stream of product water with silver ions at a concentration range of 200-400 ppb, using a membrane to control dosing. Potable water with these silver concentrations can be safely consumed by humans. The dialysis approach is attractive since it does not require additional energy nor high pressure to function. Computational Transport Phenomena has been implemented to study the performance of the membrane setup at particular operational conditions and guide the choice of membrane properties. The results suggest that the dosing device can release silver ions at the target levels for at least eight hours without excessive silver salt consumption. This paper contains technical background and preliminary results from the Passive Biocide Delivery System development and presents the benefits and challenges of its implementations in spacecraft and Lunar/Martian bases.

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Status of the International Space Station Regenerative ECLSS Water Recovery and Oxygen Generation Systems

Cited by 20 publications

References 7 publications

Water and air consumption aboard interstellar arks

Water and air consumption aboard interstellar arks

Utilization of System Dynamics to Model a Self-Sustained Mars Surface Colony

Dialysis-based Passive Biocide Delivery System: An Exploratory Analysis on the Development of a Silver Dosing Alternative for Spacecraft Potable Water Systems

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