What Is a Custom Walk-In Environmental Test Chamber?
A custom walk-in environmental test chamber is designed for applications where a standard chamber cannot provide the required working space, environmental conditions, loading configuration, test profile, safety protection, or integration with other equipment.
The key point is that customization is not simply about making a chamber larger. A properly designed walk-in chamber must consider the product being tested, the number and arrangement of samples, thermal load, temperature and humidity requirements, airflow, access, fixtures, utilities, safety systems, and the available installation space.
For large products and assemblies, a standard walk-in environmental chamber may already provide the required capacity. KOMEG standard walk-in environmental chambers are available in configurations from approximately 4 m³ to 55 m³, with different temperature and humidity capabilities. When the standard configuration does not match the actual application, the chamber can be designed around the customer’s requirements.
Why Do Companies Need a Custom Walk-In Test Chamber?
The need for customization usually comes from the product or test procedure, not from the chamber itself.
A vehicle component may require a large access door and heavy-duty floor. A battery pack may require explosion protection and gas detection. A solar panel manufacturer may need a chamber large enough for multiple modules and a special mounting system. A pharmaceutical application may require precise temperature and humidity control over a large working volume.
These applications can have completely different requirements even though they all fall under the general category of walk-in environmental testing.
A custom chamber therefore allows the environmental test system to be designed around the actual test rather than forcing the product to fit a predefined chamber configuration.
1. Chamber Size Should Be Designed Around the Product
Working volume is usually the first issue engineers consider when specifying a custom walk-in chamber, but simply calculating the product’s dimensions is not enough.
The design should also consider:
- Product dimensions and weight
- Number of samples
- Sample arrangement
- Fixtures and racks
- Operator access
- Door dimensions
- Internal airflow space
- Cable routing
- Maintenance access
- Future testing requirements
For example, a large automotive component may physically fit inside a chamber but leave insufficient space for airflow or loading equipment. Similarly, installing too many products inside a chamber can change the airflow pattern and affect temperature uniformity.
This is why the usable working space is more important than the nominal chamber volume alone.
For very large products or assemblies, KOMEG also provides walk-in environmental chamber solutions designed according to sample size and quantity.
2. Temperature and Humidity Requirements Must Be Defined Together
A custom walk-in chamber may need to reproduce high temperature, low temperature, humidity, or combined temperature-humidity conditions.
KOMEG standard walk-in environmental chambers provide different low-temperature configurations, high-temperature options, and humidity control, with typical humidity capability of 20% to 98% RH depending on configuration. Temperature and humidity fluctuation and uniformity are also controlled as part of the chamber design.
For customized systems, the important question is not simply:
“What is the maximum temperature and minimum temperature?”
Engineers should also define how the chamber needs to move between conditions, how long it must maintain each condition, how much thermal load is introduced by the DUT, and how quickly the chamber needs to recover after loading or door opening.
These factors can significantly affect the refrigeration, heating, humidification, dehumidification, insulation, and airflow systems.
3. Airflow Becomes More Important as the Chamber Gets Larger
Airflow is one of the most easily overlooked aspects of large environmental chamber design.
In a small chamber, maintaining relatively uniform temperature and humidity throughout the working space is comparatively straightforward. As chamber dimensions increase, the airflow path becomes longer, and the potential for temperature gradients also increases.
The design therefore needs to consider:
- Air supply and return locations
- Fan capacity
- Air velocity
- Product position
- Fixture obstruction
- Heat generated by the DUT
- Chamber loading density
- Temperature and humidity sensor locations
A good custom design should not simply install a larger fan. The airflow system needs to work together with the refrigeration, heating, humidification, and chamber structure.
For large and complex chambers, KOMEG states that its environmental chamber design uses engineering analysis, including computational fluid dynamics, to support product design and airflow optimization.
4. Loading and Access Can Require Major Customization
Walk-in chambers are often used for products that cannot be conveniently loaded through a conventional cabinet door.
Depending on the application, a customized chamber may require:
- Extra-wide access doors
- Double-door configurations
- Sliding doors
- Ramps
- Heavy-duty floors
- Sample trolleys
- Internal rails
- Custom racks
- Large cable ports
- Special lifting or loading equipment
- External production-line interfaces
For example, KOMEG KWH10.6L walk-in temperature and humidity chamber uses a double-door configuration and can be supplied with a customized sample trolley.
This illustrates an important point: access design is part of environmental chamber engineering, not merely a mechanical detail.
If operators cannot efficiently load the DUT, position fixtures, connect instrumentation, and remove the product after testing, even a technically capable chamber can become inefficient in daily operation.
5. Safety Requirements Should Be Designed From the Beginning
Safety becomes especially important when the DUT can generate heat, smoke, gas, flame, or pressure during testing.
This is particularly relevant to:
- Lithium-ion batteries
- Battery modules and packs
- Energy storage systems
- Chemical products
- Automotive components
- Power electronics
- Other potentially hazardous products
A customized battery walk-in chamber may incorporate explosion-proof windows, pressure-relief ports, explosion-proof chains, gas detectors, smoke detectors, fire detection, exhaust systems, fire extinguishing systems, alarm lights, and emergency shutdown functions depending on the application.
KOMEG battery walk-in test chambers are an example of this approach. The company lists configurable safety systems including explosion-proof windows, pressure-relief ports, gas detection, smoke detection, fire detection, exhaust, fire extinguishing, and related protection devices.
The important engineering principle is that safety should be considered before the chamber is built, based on the expected failure modes of the product and the test procedure.
6. Temperature Ramp Rate May Also Need to Be Customized
Not every walk-in chamber is designed for rapid temperature cycling.
A conventional walk-in environmental chamber may be primarily intended for long-duration temperature and humidity exposure, while another application may require rapid transitions between temperature extremes.
2,765 L volume and a heating/cooling rate of ≥10°C/min, together with temperature and humidity control.
However, a higher ramp rate is not automatically better.
The actual thermal response of the DUT depends on its mass, materials, fixture, airflow, internal heat generation, and measurement location. Therefore, when requesting a custom rapid-rate walk-in chamber, the complete test profile should be specified rather than focusing only on the chamber’s headline ramp rate.
7. Special Testing Applications May Require a Completely Different Chamber Design
One advantage of customization is that the same basic walk-in chamber platform can be adapted to very different industries.
Automotive Testing
Automotive applications may involve components, batteries, motors, electronics, HVAC systems, or complete vehicle-related assemblies. The chamber may require large access doors, heavy-duty floors, custom fixtures, cable connections, and temperature or humidity profiles designed around the test program.
Battery and Energy Storage Testing
Battery testing usually places greater emphasis on safety. In addition to environmental control, the chamber may require pressure relief, gas detection, fire detection, exhaust, and emergency protection.
KOMEG also offers walk-in ESS chambers for environmental stress screening and thermal cycling. Its ESS-3000 configuration is listed at 3 m³ with a temperature range of -60°C to +150°C, while customized configurations are available for different testing requirements.
Solar Panel Testing
Solar modules can require substantial working space and specialized mounting arrangements. A custom chamber can be designed around the number of panels, mounting angle, electrical connections, and required environmental conditions.
Electronics and Electrical Equipment
Large electronic assemblies may require temperature cycling, constant temperature/humidity exposure, or environmental stress screening. Cable ports, power feedthroughs, monitoring interfaces, racks, and fixture systems can therefore become important parts of the chamber design.
Pharmaceutical and Medical Products
Pharmaceutical and medical applications may place greater emphasis on stable temperature and humidity, long-duration operation, monitoring, data recording, access configuration, and product loading.
Custom Walk-In Chamber vs. Standard Walk-In Chamber
A standard walk-in chamber is usually the better choice when the required temperature range, humidity range, working volume, access, loading system, and safety configuration already match the application.
A custom walk-in chamber becomes more appropriate when the project involves unusual product dimensions, special loading requirements, non-standard environmental conditions, rapid temperature changes, automated testing, hazardous DUTs, special safety systems, or strict installation constraints.
The goal should not be to customize as many features as possible. The goal is to customize only the parts that have a real effect on the test.
That approach can reduce unnecessary cost and complexity while producing a chamber that is easier to operate and maintain.
What Can Be Customized in a Walk-In Environmental Chamber?
Depending on the project, customization can involve almost every major subsystem of the chamber.
Chamber Structure
The overall dimensions, internal layout, doors, windows, floor structure, insulation, ceiling, maintenance access, and external appearance can be designed around the installation and testing requirements.
Environmental Performance
Temperature range, humidity range, temperature fluctuation, uniformity, ramp rate, recovery time, airflow, and cooling/heating capacity can be selected according to the test profile.
Sample Handling
Shelves, racks, trolleys, rails, fixtures, loading platforms, and other sample-handling equipment can be integrated into the chamber.
Electrical and Communication Systems
Cable ports, power supply connections, external monitoring, RS485, Ethernet, USB data recording, and application-specific interfaces can be incorporated into the system.
Safety Systems
For hazardous products, additional protection can include pressure relief, gas detection, smoke detection, fire detection, exhaust, extinguishing, alarms, interlocks, and emergency shutdown.
How Is a Custom Walk-In Test Chamber Designed?
A reliable custom chamber should be designed in stages rather than starting directly with manufacturing.
Step 1: Define the DUT
Provide the product dimensions, weight, quantity, materials, operating condition, heat generation, and fixture information.
Step 2: Define the Environmental Profile
Specify the temperature range, humidity range, ramp rate, exposure time, number of cycles, recovery requirements, and any applicable test methods.
Step 3: Define Loading and Access
Determine how the DUT enters the chamber, how it is positioned, how operators access it, and how cables, power, sensors, and instrumentation are connected.
Step 4: Define Safety Requirements
Identify potential hazards such as heat generation, gas release, fire, explosion, pressure, or chemical exposure. Safety systems should be designed according to the actual DUT and test risk.
Step 5: Evaluate the Installation Site
The manufacturer should consider available floor space, ceiling height, transportation routes, doors, power supply, water supply, drainage, ventilation, and ambient conditions.
Step 6: Design and Validate the System
The final design should balance chamber structure, refrigeration, heating, humidity control, airflow, insulation, control, safety, and maintenance requirements.
This is where the difference between a custom environmental chamber manufacturer and a company that simply modifies cabinet dimensions becomes apparent.
What Information Should You Send to a Walk-In Chamber Manufacturer?
A detailed initial specification can significantly shorten the quotation and engineering process.
At minimum, provide:
Product: dimensions, weight, quantity, material, operating condition and heat generation.
Test profile: temperature range, humidity range, ramp rate, exposure time, cycle profile and recovery requirements.
Loading: fixtures, racks, trolley requirements, product arrangement and access method.
Electrical: voltage, current, power consumption, cable quantity, connector requirements and external monitoring.
Safety: battery type or product chemistry, possible gas release, heat generation, fire risk, pressure risk and required protection.
Installation: available space, transportation route, door dimensions, power supply, water supply, drainage, ventilation and ambient conditions.
The more complete these requirements are, the easier it is to determine whether a standard walk-in chamber can be adapted or whether a new configuration should be developed.
KOMEG Custom Walk-In Environmental Chamber Solutions
KOMEG provides both standard and customized walk-in environmental chambers. Its current walk-in environmental chamber range covers applications including full-vehicle testing, automotive components, solar panels, electronic components, pharmaceutical stability, biological research, and industrial testing.
For projects with special requirements, KOMEG custom climatic test chamber solutions can start from an existing standard platform or develop a dedicated solution from the beginning. The company’s customization approach covers chamber size, accessories, special test conditions, and application-specific configurations.
This is particularly useful when a project falls somewhere between a conventional reach-in chamber and a large walk-in system. Instead of selecting equipment based only on a catalog specification, the chamber can be designed around the actual product, test profile, installation environment, and safety requirements.
KOMEG also has specialized walk-in solutions for battery testing, thermal cycling, ESS, temperature and humidity testing, and other application-specific requirements. This allows the basic chamber architecture to be adapted without treating every project as a completely unrelated system.
Frequently Asked Questions
What is a custom walk-in environmental test chamber?
It is a large environmental testing system designed or modified according to specific requirements for product size, temperature, humidity, loading, airflow, safety, access, or test procedures.
How large can a custom walk-in chamber be?
There is no single universal maximum size. The practical size depends on the DUT, required environmental performance, installation area, refrigeration capacity, structural design, power supply, and access requirements. KOMEG currently lists standard walk-in environmental chambers from 4 m³ to 55 m³, while larger or application-specific configurations can be customized.
Can a walk-in chamber be customized for battery testing?
Yes. Battery applications may require additional safety systems such as pressure relief, gas detection, smoke detection, fire detection, exhaust, and fire suppression. The appropriate configuration depends on the battery, test conditions, and risk assessment.
Can a walk-in chamber provide both temperature and humidity control?
Yes. Walk-in temperature and humidity chambers can be designed for combined environmental testing. KOMEG standard walk-in configurations include humidity control, while specialized requirements can be customized according to the test profile.
Is a custom walk-in chamber more expensive than a standard chamber?
Usually, customization increases engineering and manufacturing costs, but the comparison should be based on the complete testing requirement. If a standard chamber cannot accommodate the DUT or requires extensive modifications after installation, a properly designed custom system may be more economical over its operating life.
A custom walk-in environmental test chamber should be designed around the test rather than around a predefined chamber size.
The most important considerations are not simply temperature range or chamber volume. Product dimensions, thermal load, airflow, humidity control, loading method, ramp rate, safety, electrical integration, installation conditions, and long-term operation all influence the final design.
For straightforward applications, a standard walk-in chamber may be sufficient. For large products, complex test profiles, battery and energy storage systems, automotive components, solar panels, electronics, pharmaceuticals, or other specialized applications, customization can provide a much closer match between the chamber and the actual testing requirement.
The right custom chamber is not the one with the most features. It is the one designed around the conditions your product actually needs to withstand.