SATPC0040447 Tab 04 4 SOW-Rev.pdf
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- Temperature & Humidity Equipment Conditioning Unit for ECLSS SBAR System Federal contract opportunity
- Solicitation number
- 80NSSC26925969Q
About this file
This is a NASA Statement of Work for the acquisition of a temperature and humidity conditioning system to support testing and development of the Sorbent-Based Atmospheric Revitalization (SBAR) system at Marshall Space Flight Center's Engineering Directorate, Space Systems Department. The SBAR system removes humidity and carbon dioxide to enable habitation in low-pressure environments. The contractor must provide a highly capable, reliable temperature and humidity conditioning system capable of simulating a full range of cabin inlet air conditions and post-crew dry-out scenarios at various flow rates.
The system must meet specific technical requirements including exterior dimensions not exceeding 54" wide x 50" deep x 76" high, operate on 460-volt, 3-phase, 60-hertz electrical service, and deliver conditioned air at 6–35 standard cubic feet per minute (scfm). Control accuracy must be ±1°C (±2°F) for dry bulb temperature and ±5% relative humidity for conditions above +45°F dewpoint (±10% RH below +45°F dewpoint). Required features include a touch screen control interface mounted no higher than 48 inches, solid-state humidity sensor, inline thermal mass flowmeter, evaporator pressure regulator, main power disconnect switch, emergency stop button, data logging and export capability, user-definable graphical trending, and auto-switchover between missile-grade and fresh air supply sources. The system must contain non-explosive, non-ozone-depleting refrigerants compliant with EPA SNAP regulations and include warranty with customer support, manuals, schematics, and drawings on flash drive. Delivery to Marshall Space Flight Center in Huntsville, Alabama must occur no later than 7 months after contract award.
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Text version
NASA Statement of Work
Advanced Exploration Systems Life Support Systems
Acquisition of Temperature and Humidity Equipment
System 10 March 2026
Sorbent-Based Atmospheric Revitalization (SBAR)
George C. Marshall Space Flight Center Engineering Directorate, Space Systems Department
Objective/Requirements
The Environmental Control and Life Support Systems (ECLSS) team at Marshall Space Flight Center was provided funding through for the advanced testing and development of the
Sorbent Based Atmospheric Revitalization (SBAR) system. The SBAR system removes humidity and carbon dioxide (CO2) to enable habitation in low pressure environments.
To evaluate predicted SBAR performance in cabin scenarios, the ground test system must utilize a temperature and humidity system to simulate inlet air conditions in the full range of cabin environments, as well as post-crew dry out scenarios. As part of this effort, a highly capable, reliable temperature and humidity conditioning system must be procured that can meet the wide envelopes of temperatures and humidity at various flow rates.
Characteristics, Scope, and Specs
The contractor shall provide a temperature and humidity conditioning system that meets the following specs:
Exterior dimensions no larger than 54" wide x 50" deep x 76" high
Warranty with customer support. Manuals, schematics, and drawings on flash drive.
Safety features to prevent over temperature and hi/low pressure events
Fuses, circuit breakers and thermal overloads to protect circuits and components
System monitoring and preventative maintenance settings
Contains non-explosive, non-ozone depleting refrigerants in compliance with EPA SNAP regulations
Electrical Service: 460 volt, 3 phase, 60 hertz power supply needed
Control Accuracy: ±1°C (±2°F) dry bulb air temperature control tolerance
Humidity Stability: ±5% RH controlled at the outlet of the conditioner for all conditions above +45°F dewpoint, and +/- 10% RH for all conditions below a +45°F dewpoint.
Main power disconnect switch and E-stop (control panel mounted)
Touch screen control mounted no higher than 48 inches
User Definable Graphical Trending of Program & Process Data Real Time
Data logging and data export capability
Solid state humidity sensor
Inline Thermal Mass Flowmeter
Evaporator pressure regulator
Auto-switchover of supply air source based on setpoints (Missile grade or fresh air)
Product temperature control used to control to a remote temperature sensor located at the point of use, while controlling & limiting the unit temperature to prevent overshoot and/or oscillation during varying flow rates or during flow interruptions
Capable of providing conditioned air at 6 – 35 scfm
Capable of providing conditioned air at the following specifications:
Performance Requirements and Deliverables:
Marshall Space Flight Center, Huntsville, AL
Period of Performance:
The unit must be delivered to Marshall Space Flight Center, Huntsville, AL no later than 7 months after award.
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