View
235
Download
0
Category
Preview:
Citation preview
8/2/2019 Simulation ARES
1/28
Simulat ion Model
8/2/2019 Simulation ARES
2/28
Present at ion Slide
Landscape Format
Minimum of information on each slide
Use Photos & Drawings
Contrasting Colors
8/2/2019 Simulation ARES
3/28
What is ARES?
ARES is a air revitalization system for the ISS
ARES stands for Air Regeneration System
To generate oxygen from water
To collect and to control cabin CO2To convert CO and H in water and methane
To recover the produced water
8/2/2019 Simulation ARES
4/28
Content s-I ndex
Introduction
Description of ARES
Results
Conclusions
8/2/2019 Simulation ARES
5/28
What is ARES?
ARES is a air revitalization system that is being
ARES stands for Air Regeneration System To generate oxygen from water
To collect and to control cabin CO
To convert CO2 and H2 in water and methaneTo recover the produced water
The main bene its o ARES are the ollowing:ARES allows to save upload weight and volume
It makes long space missions possible
8/2/2019 Simulation ARES
6/28
Ob ect ives of t he ARES model
Solve design problems of equipment andsystem operat on mo e
functional requirements
es gn e pre m nary con ro sys em Perform sensitivit studies trade studies
8/2/2019 Simulation ARES
7/28
Benefit s of ARES
ARES allows to save upload weight andvo ume
It makes long space missions possible
8/2/2019 Simulation ARES
8/28
ARES Descri t ion
ARES consists of three assemblies interconnected:
the Carbon Dioxide Reduction Assembly (CRA)
the Oxygen Generation Assembly (OGA)
Air
H2O
O2O2
H2/H2OH2O
H2O
OGACRACO2/H2O
SteamGenerator
CCA
AdsorberReactor
CHX
ElectrolyserStack
CO2
Mngt
CHX
CH4/CO2/H2/H2O
Air/H2OH2O
H2O VACUUM WRMH2O
CH4/CO2/H2/H2O
8/2/2019 Simulation ARES
9/28
Simulat ion Model Re uirements The model should be able to represent all the main operation
modes of the s stem.
The model should be transient and be able to calculate
averaged consumptions and productions for one cycle. The layout of the model should resemble the layout of the
actual system.
should be similar to the decomposition of the actual ARESsystem into the different assemblies. The model shouldconsist of the following submodels:CCA submodel
OGA submodel
8/2/2019 Simulation ARES
10/28
Simulat ion Model Re uirements
Each assembly submodel should be able to be tested and.
The model should have a control system for each assembly
level.
The simulation model should have all essential functions of
ARES. The level of detail of the model should allowquantitative analyses of fluid parameters (mass flow,pressure, compos on , erma parame ers, anenvironmental parameters.
8/2/2019 Simulation ARES
11/28
Main Simulat ion Model Re uirements
Representar los principales modos de operacin del sistema
energticos y msicos totales y por ciclo
diagrama del flujo del sistema real
(CCA, CRA y OGA) y del sistema global
8/2/2019 Simulation ARES
12/28
ARES Model Descri t ion The ARES model has been developed in EcosimPro
.multidisciplinary problem that can be formulated with DAEs
and discrete events EcosimPro has a set of non-causal reusable libraries and
allows the definition of new components for the existing
The ARES model is made up of the following sub-models: CCA Model
CRA Model
OGA Model
Cabin Model and THC Model
8/2/2019 Simulation ARES
13/28
ARES Model Descri t ion
The ARES model is made up of the next sub-models:
CRA Model
OGA Model ARES Control System
Cabin Model and THC Model
Each sub-model has its own control s stem
8/2/2019 Simulation ARES
14/28
ARES Model Descri t ion
The model has been developed using the following EcosimPro
CONTROL2: Library for the simulation of control system
THERMAL2: Library for the simulation of thermal networks ECLSS: Library for the simulation of environmental control and life support
systems
THERMAL2
8/2/2019 Simulation ARES
15/28
ECLSS librar
This library provides a set of components to simulate the
like cabins, crews, heat exchangers, pipes, pumps, reactors
etc ECLSS library includes thermodynamic functions to calculate
the properties of the following types of fluid mixtures:
Refrigerants of pure substances -> FORTRAN functions used byESATAN/FHTS
Perfect mixtures of ases with or without water -> Functions written in EL(EcosimPro Language)
Pure gases or water whose properties are calculated by interpolation in
data file enerated b means of the ro ert ro ram NIST StandardReference Database 12
8/2/2019 Simulation ARES
16/28
8/2/2019 Simulation ARES
17/28
8/2/2019 Simulation ARES
18/28
ARES MODEL ARCHI TECTURE - CRA
CR_FC_P_01
CR_FC_P_02 CR_RA_P_01 CR_WR_P_01
CRA_01CRA_03CRA_04 CRA_12CRA_13
RackAir
CR_FC_02
CR_WR_04
Insul_Sab1
GL_Sab2GL_Sab1
Insul_Sab2
WATER
REC
_ _01
CR WR 01
CR_WR_03
c2
GL_Insul_Sab1 GL_Insul_Sab2
VERY
Sabatier1 Sabatier2
_ _
CR_R_05
CR R P 02
c1
GL_CR_PC_03FLOW CONTROLLER
CH4
CR_RA_P_02
_ _ _
CR_PC_03
CR_PC_04
SABATIER REACTORS
MANAGEMENT
CR_R_07CR_R_P_03
CR_R_P_01
CR_PC_P_01
CRA_02CRA_05 CRA_06 CRA_07CRA_09
8/2/2019 Simulation ARES
19/28
8/2/2019 Simulation ARES
20/28
8/2/2019 Simulation ARES
21/28
8/2/2019 Simulation ARES
22/28
ARES MODEL ARCHI TECTURE - ARES
CC _AM_03
ARES_H2_Cntrl
ARES_01 ARES_02ARES_03 ARES_05CCA_13 ARES_12 ARES_13CRA_12CRA_13 OGA_11
c_CO2H2O_to_OGA
Heater_ARES_H2_Cntrl
_
OGACCA CRA
08
control
AR ES_04AR ES_06ARES_07 ARES_08 ARES_10 ARES_15CRA_05
8/2/2019 Simulation ARES
23/28
ARES MODEL ARCHI TECTURE - ARESARES_03 WaterInlet ARES_05
CCA_RackAirInlet CoolantAirInlet
CRA_RackAirInlet
ARES_12
OGA_RackAirInlet
crew
T
Tcabin
ARES_04
_
T RH O2 CO2
cabin
HumiditControl
RHC
ARES
cabin_mixer
ARES_08 CoolantAirOutletRackAirOutlet
8/2/2019 Simulation ARES
24/28
Results
Six day/night cycles have been simulated (53 min..
The sample time for the report generation has been3 secon s
The performance of the model has been about 19%
(ratio between the CPU time and the simulated time)for the test of overall ARES model
The average consumptions or productions for each
c cle of the most interestin variables have beencalculated (energy consumption of each assembly)
8/2/2019 Simulation ARES
25/28
Results
Molar Concent rat ion of CO2 in t he Cabin
0.0035
0.004
0.0025
0.003
[-]
0.0015
0.002
(CO2)
0.0005
0.001
0 100 200 300 400 500 600
Time [ m ]
8/2/2019 Simulation ARES
26/28
Results
Mass Flow of O2 pr oduced in OGA
0.00012
0.00014
]
0.00008
0.0001
[kg/s
0.00004
0.00006
sFlo
0
0.00002Ma
0 100 200 300 400 500 600
Time [ m ]
8/2/2019 Simulation ARES
27/28
Results
Molar Concent rat ion of O2 in t he Cabin
0.22
0.218
-]
0.214
.
y(O2
)
0.212
.
0 100 200 300 400 500 600
8/2/2019 Simulation ARES
28/28
Conclusions
A complete EcosimPro model of the ARES system has
The model keeps a good relationship between model
consumed)
and system operation
assemblies have been developed
refinement in the second phase of the model
Recommended