Multi-Objective Optimization for Solid Amine CO2 Removal Assembly in Manned Spacecraft
Carbon Dioxide Removal Assembly (CDRA) is one of the most important systems in the Environmental Control and Life Support System (ECLSS) for a manned spacecraft. With the development of adsorbent and CDRA technology, solid amine is increasingly paid attention due to its obvious advantages. However,...
Main Authors: | , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2017-07-01
|
Series: | Entropy |
Subjects: | |
Online Access: | https://www.mdpi.com/1099-4300/19/7/348 |
id |
doaj-0905f56d13094774acc40432ddb0ec1c |
---|---|
record_format |
Article |
spelling |
doaj-0905f56d13094774acc40432ddb0ec1c2020-11-24T21:09:59ZengMDPI AGEntropy1099-43002017-07-0119734810.3390/e19070348e19070348Multi-Objective Optimization for Solid Amine CO2 Removal Assembly in Manned SpacecraftRong A0Liping Pang1Meng Liu2Dongsheng Yang3School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, ChinaSchool of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, ChinaSchool of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, ChinaBeijing Spacecrafts, Beijing 100094, ChinaCarbon Dioxide Removal Assembly (CDRA) is one of the most important systems in the Environmental Control and Life Support System (ECLSS) for a manned spacecraft. With the development of adsorbent and CDRA technology, solid amine is increasingly paid attention due to its obvious advantages. However, a manned spacecraft is launched far from the Earth, and its resources and energy are restricted seriously. These limitations increase the design difficulty of solid amine CDRA. The purpose of this paper is to seek optimal design parameters for the solid amine CDRA. Based on a preliminary structure of solid amine CDRA, its heat and mass transfer models are built to reflect some features of the special solid amine adsorbent, Polyethylenepolyamine adsorbent. A multi-objective optimization for the design of solid amine CDRA is discussed further in this paper. In this study, the cabin CO2 concentration, system power consumption and entropy production are chosen as the optimization objectives. The optimization variables consist of adsorption cycle time, solid amine loading mass, adsorption bed length, power consumption and system entropy production. The Improved Non-dominated Sorting Genetic Algorithm (NSGA-II) is used to solve this multi-objective optimization and to obtain optimal solution set. A design example of solid amine CDRA in a manned space station is used to show the optimal procedure. The optimal combinations of design parameters can be located on the Pareto Optimal Front (POF). Finally, Design 971 is selected as the best combination of design parameters. The optimal results indicate that the multi-objective optimization plays a significant role in the design of solid amine CDRA. The final optimal design parameters for the solid amine CDRA can guarantee the cabin CO2 concentration within the specified range, and also satisfy the requirements of lightweight and minimum energy consumption.https://www.mdpi.com/1099-4300/19/7/348solid amine CDRAmanned spacecraftsystem designmulti-objective optimization |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Rong A Liping Pang Meng Liu Dongsheng Yang |
spellingShingle |
Rong A Liping Pang Meng Liu Dongsheng Yang Multi-Objective Optimization for Solid Amine CO2 Removal Assembly in Manned Spacecraft Entropy solid amine CDRA manned spacecraft system design multi-objective optimization |
author_facet |
Rong A Liping Pang Meng Liu Dongsheng Yang |
author_sort |
Rong A |
title |
Multi-Objective Optimization for Solid Amine CO2 Removal Assembly in Manned Spacecraft |
title_short |
Multi-Objective Optimization for Solid Amine CO2 Removal Assembly in Manned Spacecraft |
title_full |
Multi-Objective Optimization for Solid Amine CO2 Removal Assembly in Manned Spacecraft |
title_fullStr |
Multi-Objective Optimization for Solid Amine CO2 Removal Assembly in Manned Spacecraft |
title_full_unstemmed |
Multi-Objective Optimization for Solid Amine CO2 Removal Assembly in Manned Spacecraft |
title_sort |
multi-objective optimization for solid amine co2 removal assembly in manned spacecraft |
publisher |
MDPI AG |
series |
Entropy |
issn |
1099-4300 |
publishDate |
2017-07-01 |
description |
Carbon Dioxide Removal Assembly (CDRA) is one of the most important systems in the Environmental Control and Life Support System (ECLSS) for a manned spacecraft. With the development of adsorbent and CDRA technology, solid amine is increasingly paid attention due to its obvious advantages. However, a manned spacecraft is launched far from the Earth, and its resources and energy are restricted seriously. These limitations increase the design difficulty of solid amine CDRA. The purpose of this paper is to seek optimal design parameters for the solid amine CDRA. Based on a preliminary structure of solid amine CDRA, its heat and mass transfer models are built to reflect some features of the special solid amine adsorbent, Polyethylenepolyamine adsorbent. A multi-objective optimization for the design of solid amine CDRA is discussed further in this paper. In this study, the cabin CO2 concentration, system power consumption and entropy production are chosen as the optimization objectives. The optimization variables consist of adsorption cycle time, solid amine loading mass, adsorption bed length, power consumption and system entropy production. The Improved Non-dominated Sorting Genetic Algorithm (NSGA-II) is used to solve this multi-objective optimization and to obtain optimal solution set. A design example of solid amine CDRA in a manned space station is used to show the optimal procedure. The optimal combinations of design parameters can be located on the Pareto Optimal Front (POF). Finally, Design 971 is selected as the best combination of design parameters. The optimal results indicate that the multi-objective optimization plays a significant role in the design of solid amine CDRA. The final optimal design parameters for the solid amine CDRA can guarantee the cabin CO2 concentration within the specified range, and also satisfy the requirements of lightweight and minimum energy consumption. |
topic |
solid amine CDRA manned spacecraft system design multi-objective optimization |
url |
https://www.mdpi.com/1099-4300/19/7/348 |
work_keys_str_mv |
AT ronga multiobjectiveoptimizationforsolidamineco2removalassemblyinmannedspacecraft AT lipingpang multiobjectiveoptimizationforsolidamineco2removalassemblyinmannedspacecraft AT mengliu multiobjectiveoptimizationforsolidamineco2removalassemblyinmannedspacecraft AT dongshengyang multiobjectiveoptimizationforsolidamineco2removalassemblyinmannedspacecraft |
_version_ |
1716756747850350592 |