Views: 0 Author: Cytech Publish Time: 2026-09-03 Origin: Site
An E-House (Electrical House) is a prefabricated building or modular enclosure used to house electrical and power equipment such as switchgear, transformers, power conversion systems, battery energy storage systems, control equipment, and monitoring systems.
Because these systems generate significant amounts of heat during continuous operation, maintaining a stable internal temperature is critical. At the same time, E-Houses are often installed in challenging environments such as coastal areas, deserts, industrial sites, power plants, and energy storage facilities.
This creates two major requirements for the HVAC system:
High-capacity and reliable cooling
Strong resistance to corrosion and harsh outdoor conditions
For high-heat-load E-House applications, a wall-mounted or wall-pack industrial air conditioner can provide an effective solution. CYTECH's energy storage air conditioner platform includes 21kW, 26kW, and 30kW cooling models, designed for outdoor energy storage cabinets, BTS, and other applications requiring reliable heat dissipation.
The three models provide different cooling capacities while sharing features such as outdoor protection, rotary compressor technology, heating and dehumidification functions, RS485 communication, and dry-contact alarm output.
Electrical equipment inside an E-House continuously generates heat.
For example, power converters, batteries, UPS systems, switchgear, transformers, rectifiers, and other electronic equipment can produce substantial thermal loads. If this heat cannot be removed efficiently, the internal temperature can rise rapidly.
High temperatures can result in:
Reduced equipment efficiency
Accelerated aging of electronic components
Reduced battery performance and lifetime
Increased risk of thermal alarms
Unplanned equipment shutdown
Higher maintenance requirements
A wall-pack air conditioner is particularly suitable because it can be mounted directly through the E-House wall, keeping the cooling system integrated with the enclosure while maintaining separation between the indoor and outdoor air circuits.
A wall pack air conditioner is an industrial HVAC system designed to be mounted on the wall of an electrical enclosure, E-House, container, or energy storage building.
Unlike a conventional comfort air conditioner, an industrial wall-pack unit is designed around the requirements of electrical and power equipment.
The CYTECH design uses an active refrigeration cooling cycle. Hot air from inside the enclosure transfers its heat to the evaporator, while the refrigerant absorbs the heat and is compressed before releasing the heat through the condenser. The refrigeration cycle then repeats continuously.
This configuration allows the E-House cooling system to remove heat continuously without simply introducing hot or humid outdoor air into the electrical room.
Different E-House projects have different heat loads. Selecting the correct cooling capacity is therefore one of the most important steps in HVAC design.
CYTECH provides three high-capacity models for energy storage and industrial applications.
Model |
Cooling Capacity |
Power Consumption |
Internal Airflow |
Refrigerant |
Ip Rating |
Weight |
CY-A210NA |
9kw |
7,000 m³/h |
R410A |
IP55 |
220KG |
|
CY-A260NA |
26kw |
12.5kw |
7,500 m³/h |
R410A |
IP55 |
280KG |
CY-A300NA |
30kw |
18kw |
12,000 m³/h |
R410A |
IP55 |
300KG |
The 21kW model is rated at 21kW cooling capacity, while the 26kW and 30kW models provide 26kW and 30kW respectively under the specified L27/L32 test condition.
The 21kW model provides:
21kW cooling capacity
7,000m³/h internal circulation airflow
9kW power consumption
R410A refrigerant
Optional 9kW PTC heater
-30°C to +45°C operating temperature
IP55 protection
220kg net weight
It is suitable for E-Houses and industrial enclosures where the calculated thermal load is around the 21kW range.
For applications requiring higher heat removal, the CY-A260NA provides:
26kW cooling capacity
7,500m³/h internal circulation airflow
12.5kW power consumption
Optional 9kW PTC heater
-30°C to +45°C operating temperature
IP55 protection
280kg net weight
This model offers an intermediate capacity between the 21kW and 30kW configurations.
For higher thermal loads, the CY-A300NA provides:
30kW cooling capacity
12,000m³/h internal circulation airflow
18kW power consumption
R410A refrigerant
Optional 10kW PTC heater
-30°C to +45°C operating temperature
IP55 protection
300kg net weight
The high internal airflow makes this configuration suitable for applications where a large volume of internal air needs to be continuously circulated and cooled.
Cooling capacity is only one part of the reliability equation.
For E-Houses installed in coastal, marine, desert, chemical, or industrial environments, corrosion can become a major concern.
Salt spray, high humidity, dust, chemical contaminants, and temperature cycling can gradually attack exposed metal components.
Potential corrosion locations include:
Outdoor cabinet panels
Condenser coils
Evaporator coils
Fan components
Fasteners
Electrical terminals
Refrigeration piping
Compressor-related components
Mounting brackets
Heat exchanger surfaces
If corrosion protection is neglected, the HVAC system may experience reduced heat-transfer performance, deterioration of mechanical components, electrical connection problems, and increased maintenance requirements.
Therefore, for an E-House located in a harsh environment, corrosion protection should be considered during HVAC design rather than treated as an afterthought.
A corrosion-resistant E-House air conditioner requires more than simply applying paint to the external enclosure.
A complete anti-corrosion strategy should consider the materials, coatings, heat exchangers, fasteners, electrical components, and refrigeration system.
The external housing is the first line of defense against the environment.
Depending on the project requirements, the housing can be designed with suitable corrosion-resistant materials and protective surface treatment.
Possible approaches include:
Anti-corrosion powder coating
Protective surface treatment
Corrosion-resistant metal materials
Additional coating thickness
Sealed joints and interfaces
Corrosion-resistant fasteners
For E-House projects located near the sea or in industrial environments, the coating specification should be selected according to the actual environmental conditions.
The condenser and evaporator are among the most important components of an air conditioner because their surfaces are directly involved in heat transfer.
However, heat exchanger surfaces can also be exposed to:
Salt spray
Moisture
Dust
Industrial pollutants
Corrosive gases
For harsh-environment E-House applications, the heat exchanger can therefore be designed with an appropriate anti-corrosion treatment, such as a protective coating or other suitable surface treatment.
The objective is to protect the heat exchanger while maintaining efficient heat transfer.
This is particularly important for E-Houses installed in coastal areas where salt-laden air can accelerate corrosion.
The compressor is the heart of the refrigeration system.
CYTECH's E-House air conditioner uses an efficient rotary compressor, with a DC variable-frequency compressor available as an option.
For harsh environments, corrosion protection should not be limited to the external housing.
The compressor, refrigeration piping, brackets, valves, and other exposed refrigeration components can also be considered as part of the anti-corrosion design.
Depending on the project specification, suitable protective treatment can be applied to exposed components and metal surfaces.
This creates a more comprehensive protection strategy:
Enclosure → Heat Exchanger → Fan Components → Refrigeration System → Compressor → Electrical Components
Rather than protecting only the visible external surface, the entire outdoor-side system should be evaluated.
Important: The exact coating system and corrosion-resistance level should be specified according to the project's environmental classification and customer requirements. The three supplied datasheets do not specify a particular C4/C5 corrosion class or salt-spray test duration.
E-House HVAC systems operate continuously, so electrical reliability is equally important.
The CYTECH units include RS485 communication and dry-contact alarm outputs, allowing the air conditioner to be integrated into a remote monitoring system.
For harsh environments, electrical terminals, connectors, cable glands, control components, and connection points should also receive appropriate environmental protection.
This is especially important in applications with:
High humidity
Salt spray
Condensation
Dust
Chemical contaminants
The goal is to prevent corrosion from developing at electrical interfaces and compromising long-term system reliability.
All three CYTECH models are specified with an IP55 protection rating.
IP55 provides protection against dust ingress at a level suitable for many outdoor industrial applications and protection against water jets from certain directions.
However, it is important to understand that IP protection and corrosion protection are not the same thing.
IP55 addresses ingress protection.
Corrosion protection addresses the ability of materials and components to withstand corrosive environmental exposure.
Therefore:
IP55 + appropriate anti-corrosion treatment = a more complete outdoor HVAC solution.
An E-House located in a marine environment may require additional corrosion protection even when the HVAC system already has an IP55 rating.
E-House HVAC requirements are not limited to summer cooling.
The CYTECH energy storage air conditioner provides:
Active cooling
Heating
Dehumidification
These functions help maintain a suitable thermal environment for batteries, power electronics, and other electrical equipment.
Optional PTC heaters are available:
9kW for CY-A210NA
9kW for CY-A260NA
10kW for CY-A300NA
This can be useful for E-Houses operating in cold climates where heating is required during low ambient temperatures.
E-Houses may be deployed in locations with significant temperature variations.
The three models are specified for an operating temperature range of:
-30°C to +45°C
This makes the units suitable for a wide range of industrial and energy-storage applications.
For projects requiring operation outside this range, especially extremely high-temperature desert applications, the HVAC manufacturer should perform a detailed thermal and component evaluation before final selection.
Modern E-Houses are increasingly designed for unattended operation.
The air conditioner therefore needs to communicate with the site's monitoring or energy management system.
The CYTECH units provide:
The RS485 interface can be used for communication and remote monitoring.
Dry-contact outputs provide alarm interfaces for integration with external monitoring systems.
The available interfaces include:
NC
COM
NO
RS485-A
RS485-B
This allows the HVAC system to become part of the E-House's overall monitoring architecture.
Outdoor E-Houses can be exposed to dust, fibers, and airborne contaminants.
The CYTECH design incorporates an external circulation air inlet screen to help prevent flocs from clogging the heat exchanger.
This is particularly useful for industrial environments where airborne particles can accumulate on heat exchanger surfaces and gradually reduce airflow and heat-transfer performance.
Proper cleaning and maintenance should still be included in the project's HVAC maintenance plan.
The correct air conditioner should not be selected simply according to the E-House's physical size.
The primary consideration is the total heat load.
The calculation should consider:
Battery heat generation
PCS/inverter losses
Transformer heat
Switchgear losses
UPS losses
Control equipment
Lighting
Personnel, if applicable
Solar radiation through the enclosure
Heat transfer through walls and roof
Outdoor ambient temperature
Required indoor temperature
A simplified approach is:
Required Cooling Capacity ≥ Total Internal Heat Load + Heat Gain from the Environment + Design Safety Margin
For example, if the calculated E-House heat load is approximately 20kW, a 21kW unit may be considered as a starting point. If the heat load approaches 25kW, the 26kW model may be more appropriate. For approximately 30kW of heat load, the CY-A300NA provides a 30kW rated cooling capacity under the specified test condition.
Final selection should always be based on the complete thermal calculation and actual project operating conditions.
Requirement |
Recommended Model |
|---|---|
Around 21kW heat load |
CY-A210NA |
Around 26kW heat load |
CY-A260NA |
Around 30kW heat load |
CY-A300NA |
Higher internal airflow requirement |
CY-A300NA |
Cold-climate operation |
Model with optional PTC heater |
Marine/coastal environment |
Specify additional anti-corrosion treatment |
Remote monitoring requirement |
RS485 + dry contact |
Outdoor installation |
IP55 configuration |
The final model should be selected based on the actual heat-load calculation, ambient temperature, installation conditions, required indoor temperature, and environmental corrosion requirements.
Not every E-House requires the same level of corrosion protection.
For example:
A standard protective coating system may be sufficient depending on the site's environmental conditions.
Salt-laden air can significantly increase corrosion risk. Additional protection for heat exchangers, fasteners, outdoor surfaces, and exposed refrigeration components should be considered.
A more comprehensive anti-corrosion specification may be required, potentially including enhanced coatings, corrosion-resistant materials, special fasteners, and additional testing.
The manufacturer should evaluate the specific contaminants and select compatible materials and coatings.
This is why a professional E-House HVAC supplier should not simply offer a standard air conditioner and call it "corrosion resistant." The environment, materials, coating system, heat exchanger, compressor, electrical components, and testing requirements should all be considered together.
Every E-House project can have different requirements.
A customized industrial air conditioner can be configured according to:
Cooling capacity
Voltage and frequency
Ambient temperature
Indoor temperature requirement
Heating requirement
Dehumidification requirement
IP protection
Corrosion environment
Communication interface
Installation dimensions
Airflow requirements
Maintenance access
CYTECH's 21kW, 26kW, and 30kW platform provides a range of high-capacity cooling options for energy storage and industrial applications, while additional project-specific requirements can be evaluated during the engineering stage.
A reliable E-House HVAC system needs to do more than provide sufficient cooling capacity.
For high-power electrical and energy storage applications, the air conditioner must provide:
High cooling capacity + outdoor protection + reliable refrigeration + corrosion resistance + monitoring + maintainability.
CYTECH's 21kW, 26kW and 30kW wall-pack/backpack air conditioners are designed for applications including outdoor energy storage cabinets and other industrial heat-dissipation applications. They provide active cooling, heating and dehumidification, with IP55 protection, RS485 communication, dry-contact alarms and efficient rotary compressor technology.
For E-Houses installed in coastal, marine, desert, or industrial environments, corrosion protection should be considered at the system-design stage. Instead of protecting only the external housing, the design can address the cabinet, heat exchanger, compressor, refrigeration components, fasteners and electrical connections as an integrated anti-corrosion system.
With the right cooling capacity and environmental protection strategy, a wall-pack air conditioner can help maintain a stable internal environment and support the long-term reliability of critical E-House equipment.
Looking for a 21kW, 26kW or 30kW wall-pack air conditioner for your E-House project? Contact CYTECH for a customized cooling and corrosion-protection solution.
