Key Advantages：
Capacity：0.5 m³ to 2.65 m³(Customizable)
High Vacuum Level (mbar)：1.0×10⁻⁷
No-load Vacuum Level (mbar)：5×10⁻⁷ mbar(Room temperature)
Vacuum Cube Leak Rate：1×10−9std/cc/sec
Temperature Range： -190°C(LN2 cooling) to 200°C
Temperature Uniformity：±2℃
Patent Number: CN202510795397.6
Stable pressure control across multiple vacuum ranges
Designed for space simulation and aerospace qualification
Supports thermal cycling under vacuum conditions
Key Specifications of Thermal Vacuum Test Chamber：
| Serial number | Capacity ( m3 ) | 0.402 | 0.785 | 2.65 |
| 1 | Model | EZKT 1000-5 | EZKT 1200-5 | EZKT 1700-5 |
| 2 | Thermal Shroud Internal Dimensions (mm) (straight cylindrical section) | ø 800×800 | ø 1000×1000 | ø 1500×1500 |
| 3 | Vacuum Chamber Internal Dimensions (mm) (straight cylindrical section) | ø 1000×1000 | ø 1200×1200 | ø 1700×1700 |
| 4 | Thermal Plate Dimensions (mm) | 600×500 | 800×700 | 1300×1200 |
| 5 | High Vacuum Level | 1.0×10−7 Torr（1.33×10−7 mbar） | ||
| 6 | No-load Vacuum Level (mbar) | 5.0×10−7(Room temperature) | ||
| 7 | Pressure Regulation in Multiple Ranges (mbar/Torr) | Stable pressure operation under the following levels 1.0×10-2 , 1.0×10-3 , 1.0×10-4 , 1.0×10-5 , 1.0×10−6 (Room temperature) | ||
| 8 | Vacuum Cube Leak Rate | ≤ 1×10-9 std/cc/sec | ||
| 9 | Refrigeration Mode | A：Thermal sink + Cold plate B：Thermal sink +Heating cage C: Liquid nitrogen thermal sink+ Heating cage | ||
| 10 | Temperature Range | Gaseous Nitrogen Control: -180°C to 200°C Mechanical Refrigeration: -80°C to 150°C Flooded Liquid Nitrogen : -190°C | ||
| 11 | Temperature Uniformity | ±2℃ (Measured at any point on the heat sink and cold plate under stable conditions in a vacuum environment) | ||
| 12 | Temperature Rising / Falling Speed Rate | -70℃ to 100℃ ≥ 3℃/min 100℃ to -50℃ ≥ 3℃/min (By Mechaincal cooling) | ||
| 13 | Temperature Rising / Falling Speed Rate -Optional | -150℃ to 125℃ ≥ 3℃/min 125℃ to -150℃ ≥ 3℃/min (By pressurized GN2 reciculation) | ||
| 14 | Vacuum Acquisition System | Mechanical Pump / Roots Pump / Molecular Pump / Cryopump | ||
| 15 | Power | AC380V 3phase 5lines 50/60Hz | ||
| 16 | We possess the technical expertise to address integrated temperature-humidity control challenges in low-pressure environments. Contact our sales team for scenario-specific solutions. | |||
Opening：
The Thermal Vacuum Test Chamber (TVAC) is a specialized space environment simulation system designed to validate spacecraft, satellites, and aerospace components under extreme vacuum and temperature conditions.
By reproducing the thermal conditions encountered in orbit, TVAC testing allows engineers to evaluate product reliability, identify potential failure mechanisms, and verify performance before launch. It is widely applied in aerospace, defense, satellite manufacturing, and high-reliability electronic industries.
What Is a Thermal Vacuum Test Chamber (TVAC)?
A Thermal Vacuum Test Chamber combines an ultra-high vacuum system with a controlled thermal environment to recreate the conditions experienced by spacecraft during orbital operation.
Inside the chamber, atmospheric pressure is reduced to minimize convection, while thermal shrouds and temperature control systems simulate the extreme hot and cold conditions found in space. Under these conditions, engineers can evaluate thermal balance, temperature cycling behavior, material outgassing, structural stability, and electronic performance.
Working Principle：
The chamber combines:
Vacuum pumping system (to achieve ultra-low pressure)
Thermal shroud or cold plate (for temperature control)
Heating system (for high-temperature simulation)
Under vacuum conditions, heat transfer occurs mainly through radiation instead of convection, accurately replicating space environments where air is absent.
Thermal Vacuum Testing Process:
1. Chamber Pump Down
The vacuum system removes air molecules and reaches the required pressure level.
2. Thermal Stabilization
The thermal shroud controls hot and cold conditions.
3. Thermal Cycling
The test article experiences repeated temperature transitions.
4. Performance Verification
Engineers monitor electrical, mechanical and thermal behavior.
Designed for Space Simulation Testing：
Thermal vacuum testing enables engineers to evaluate:
Thermal deformation of structures
Material outgassing behavior
Electronic performance under vacuum
Thermal balance and heat dissipation
This process is essential for pre-launch qualification of aerospace systems and ensures mission reliability.
Thermal Vacuum Chamber vs Thermal Cycling Chamber:
| Feature | Thermal Vacuum | Thermal Cycling |
|---|---|---|
| Environment | Vacuum + temperature | Air environment |
| Heat Transfer | Radiation | Convection |
| Application | Space & aerospace | Electronics |
| Standard | ECSS / MIL-STD-1540 | JESD22/IEC60068 |
Common Failure Modes Identified During Thermal Vacuum Testing
Thermal Vacuum Testing (TVAC) is designed to identify potential reliability issues that may occur when products operate in space-like environments. By combining high vacuum conditions with extreme thermal cycling, engineers can evaluate thermal performance, material stability and system reliability before deployment.
Common failure modes detected during TVAC testing include:
1. Vacuum Outgassing and Contamination
Failure Cause
Materials such as adhesives, coatings, plastics and insulation components may release volatile substances under vacuum conditions.
Potential Impact:
Optical contamination
Reduced thermal control performance
Surface deposits on sensitive components
Degraded spacecraft reliability
TVAC Detection Method
Engineers monitor pressure stability, residual gas behavior and contamination indicators during vacuum exposure.
2. Thermal Expansion and Mechanical Stress
Failure Cause
Different materials have different coefficients of thermal expansion (CTE). Repeated hot and cold cycles can create mechanical stress between connected components.
Potential Impact:
Cracks in solder joints
Connector failures
Seal deformation
Structural damage
TVAC Detection Method
Thermal cycling between hot and cold conditions is used to evaluate mechanical durability and thermal design margins.
3. Electronic Performance Failure
Failure Cause:
Electronic components may experience abnormal behavior when exposed to extreme temperatures and vacuum environments.
Potential Impact:
Sensor malfunction
Power instability
Communication errors
Component shutdown
TVAC Detection Method
Functional monitoring is performed during thermal plateaus and temperature transitions.
4. Thermal Control System Failure
Failure Cause
Poor thermal design may prevent components from maintaining required operating temperatures in vacuum conditions where convection is unavailable.
Potential Impact:
Overheating
Excessive cooling
Thermal imbalance
Reduced mission lifetime
TVAC Detection Method
Temperature sensors and thermal monitoring systems verify heat transfer performance during testing.
5. Vacuum Leakage
Failure Cause
Leaks from chamber seals, test fixtures or hardware interfaces can prevent achieving the required vacuum level.
Potential Impact:
Unstable test conditions
Incorrect thermal simulation
Invalid test results
TVAC Detection Method
Vacuum pressure monitoring and leak detection are used to verify chamber integrity.
How Thermal Vacuum Testing Helps Prevent Failures
A properly designed TVAC test system allows engineers to identify hidden reliability risks before products enter real operating environments.
Typical applications include:
Satellites
Space electronics
Aerospace components
Optical instruments
Avionics systems
Battery systems
By reproducing vacuum and extreme temperature conditions, Thermal Vacuum Chambers help
Why Engineering Teams Work With TestEQ
Custom vacuum levels up to 10⁻⁷ mbar ultra-high vacuum
Extreme temperature range: -190°C to +200°C
Precise thermal balance control (multi-zone optional)
Fast ramp & stabilization for accelerated testing cycles
Compliance with NASA / ECSS / MIL-STD / IEC 60068
Full system integration (DAQ, remote monitoring, automation)
Optional Configurations
Liquid nitrogen cooling (LN₂ boost to -190°C)
Solar radiation simulation system
Multi-zone thermal control
Remote monitoring & data acquisition system
How to choose a thermal vacuum chamber?
Engineers should consider:
1. Ultimate vacuum level
2. Chamber volume and payload size
3. Temperature range
4. Thermal cycling capability
5. Test standards required
6. Data acquisition system
Standards Supported
1.Military:
•MIL-STD-810H (Method 501.7, 502.6), MIL-STD-1540E (Space Vehicle Requirements).
2.European Space:
•ECSS-E-ST-10-03C (Thermal Vacuum Testing), ECSS-Q-ST-70-02C (Contamination Control).
3.Commercial:
•NASA-HDBK-6022 (Materials Compatibility), ISO 14644-1 (Cleanroom Class 100–100,000).
4.Industry-Specific:
•GSFC-STD-7000 (Goddard Space Flight Center), JAXA-STD-003 (Japan Aerospace).
FAQ:
1.What is a thermal vacuum test chamber?
A thermal vacuum chamber simulates space conditions by combining high vacuum and extreme temperature environments for reliability testing.
2.What is thermal vacuum testing used for?
It is mainly used for satellite, aerospace, and space electronics testing before launch.
3.What vacuum level is required for space simulation?
Typical thermal vacuum testing requires vacuum levels around 10⁻⁶ to 10⁻⁷ mbar depending on application.
4.What is the difference between thermal vacuum and thermal shock?
Thermal vacuum combines vacuum + temperature, while thermal shock focuses on rapid temperature change only.
5. What standards are commonly used for thermal vacuum testing?
Thermal vacuum testing is commonly performed according to aerospace and defense standards such as ECSS, MIL-STD-1540, NASA GEVS, and related spacecraft environmental qualification requirements. These standards define test conditions, vacuum levels, thermal cycling profiles, and verification procedures.
6. How does a thermal vacuum chamber control temperature in a vacuum environment?
A thermal vacuum chamber typically uses thermal shrouds, radiation-based heating and cooling systems, and precise temperature control technologies to simulate the extreme hot and cold conditions experienced in space where convection is unavailable.
7. What products can be tested in a thermal vacuum chamber?
Thermal vacuum chambers are used for testing satellites, spacecraft components, solar panels, avionics systems, sensors, batteries, electronic assemblies, and other aerospace components that must operate reliably in vacuum and extreme temperature environments.
8. How do I choose the right thermal vacuum test chamber?
Selecting a thermal vacuum chamber requires evaluating vacuum performance, temperature range, chamber size, payload requirements, thermal cycling capability, measurement systems, and compliance with applicable aerospace testing standards.
Internal Linking Module
Recommended Equipment
Applicable for spacecraft, satellite subsystems, aerospace electronics and long-duration qualification testing. Supports ultra-high vacuum and thermal cycling simulation under space conditions.
Ideal for evaluating thermal fatigue, solder joint reliability, electronic component durability and accelerated life testing under fast temperature transitions.
Related Standards
European Space Agency thermal vacuum testing standard used for spacecraft environmental qualification, thermal balance verification and mission reliability validation.
Learn how MIL-STD-810 environmental testing evaluates product durability through temperature, vibration, shock, humidity, and altitude testing to improve reliability in military, aerospace, and industrial applications.
Technical Resources
Learn how thermal vacuum testing simulates space environments, evaluates thermal balance, verifies material outgassing and validates aerospace hardware before launch.
Learn how TVAC and thermal vacuum chambers simulate space environments for satellites, spacecraft and aerospace electronics. Discover testing principles, industry applications, key specifications and practical selection criteria for mission-critical reliability validation.
Applications:
This thermal vacuum chamber is widely used in:
Satellite and spacecraft testing
Aerospace component validation
Space electronics and payload testing
Material outgassing and vacuum compatibility testing
Optical systems and sensor calibration
Thermal vacuum testing is critical for verifying spacecraft performance before launch and ensuring reliability in space environments
Call To Action:
Ready to Validate Your Product for Space Environments?
From satellite components and avionics to aerospace electronics, TestEQ delivers custom thermal vacuum chambers engineered for demanding qualification and reliability testing requirements.
Custom Chamber Design
High Vacuum Performance
Thermal Cycling & Thermal Balance Testing
Aerospace & Satellite Applications
Global Technical Support
"Request a customized thermal vacuum testing solution today"
Our engineers will help you design a chamber tailored to your aerospace or laboratory requirements.
We will contact you within 1 working day, please pay attention to the email with
the suffix "@test-eq.com".
We will contact you within 1 working day, please pay attention to the email with the suffix "@test-eq.com".
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