Global Supplier of Explosion-Proof HVAC Systems

HVAC Solutions for Explosion-Proof Environment Delivering Safety, Efficiency, and Reliability in the World's Most Demanding Conditions

Q: Integrated Safety Control

Smart sensors continuously monitor gas concentration, temperature, and internal pressure. In case of anomalies, safety logic initiates auto-shutdown or ventilation increase to stabilize the environment — fostering an intelligent layer of operational defense.

IECEx/ATEX/CNEX Certified

Zone 1–2 Compliant

IP55–IP66 Protection

24/7 Industrial Duty

Purpose-built to ensure absolute safety while maintaining precise temperature, humidity, and air purity in hazardous industrial environments

Delivering Safety, Efficiency, and Reliability in the World's Most Demanding Conditions

When operating in hazardous environments where a single spark can lead to catastrophic consequences, standard HVAC systems are simply not enough. Industries such as chemical processing, paint manufacturing, gas handling, energy storage, and hazardous materials logistics demand robust, certified, and meticulously engineered air-conditioning and ventilation systems.

SongXin HVAC Solutions for Explosion-Proof Environment are purpose-built to ensure absolute safety while maintaining precise temperature, humidity, and air purity. Designed in line with global explosion-proof and electrical safety standards including IECEx, ATEX, and CNEX, SongXin systems are trusted by industrial operators across the globe for their durability, intelligence, and long-term performance.

Certified Safety

Full compliance with IECEx, ATEX, and CNEX standards for hazardous zone operations

Peak Efficiency

Advanced inverter technology and heat recovery systems reduce energy costs by up to 30%

Proven Reliability

Industrial-grade components engineered for 24/7 continuous operation in harsh environments

01 Critical Challenges

Understanding the Environmental & Operational Challenges

Explosion-proof environments are among the toughest workplaces in the world. Engineers must combat not only hazardous atmospheres but also physically harsh and unpredictable ambient conditions. SongXin HVAC designs address each of these critical challenges systematically.

Flammable Atmospheres

Airborne mixtures of hydrocarbon gases, organic solvents, or combustible dust pose ignition risks that require Class I/II, Division 1–2 compliant systems. SongXin explosion-proof HVAC units are engineered with flameproof electrical assemblies and pressure-tight enclosures, ensuring complete containment and zero spark risk even in volatile zones.

Harsh Industrial Conditions

Factories often expose equipment to corrosive vapors, salt-laden air, and chemical mists. SongXin's units feature marine-grade C5M coatings, stainless hardware, and hydrophilic heat-exchanger fins, offering excellent resistance to rust and erosion in environments dense with acid gases or solvents.

Temperature Extremes

Outdoor installations can face scorching heat, biting cold, or intense humidity. With an ambient operating range of −25 °C to +55 °C, SongXin HVAC Solutions for Explosion-Proof Environment maintain stable thermal control and efficiency across all seasons and climates.

Continuous 24-Hour Operation

Mission-critical industrial zones have zero tolerance for downtime. Each SongXin unit is built for round-the-clock duty cycles, featuring industrial-grade compressors, redundant protection logic, and long-life bearings — all to deliver uninterrupted performance year after year.

Global Certainty and Compliance

SongXin products are certified under ATEX, IECEx, and CNEX requirements, meeting strict international standards across Europe, the Middle East, and Asia-Pacific. The design, testing, and documentation processes exceed global expectations for explosion-proof certification.

Maintenance Safety

Maintenance personnel must perform inspections and servicing without compromising system integrity. SongXin enclosures provide front-access service panels designed for tool-safe maintenance using non-sparking instruments, ensuring high safety levels during every service event.

02 Core Philosophy

Engineering Philosophy — Safety Without Compromise

Every SongXin HVAC Solution for Explosion-Proof Environment adheres to the company's fundamental philosophy: protect people, process, and property through engineering excellence. Each system combines mechanical strength, precision control, and digital intelligence within a fully certified flameproof housing.

From concept design through to factory testing, each system undergoes stages of computational modeling, risk evaluation, and environmental simulation. The result is a custom-engineered solution capable of thriving in extreme industrial ecosystems while meeting mission-critical safety codes.

03 System Configurations

Recommended HVAC System Configurations

Different hazardous zones call for unique approaches to cooling, ventilation, and contamination control. The following configurations illustrate how SongXin HVAC Solutions for Explosion-Proof Environment can be tailored for specific applications.

Application Zone	Recommended System	Key Features
Chemical Processing Hall	Explosion-Proof Packaged DX Unit + AHU	Zone 1–2 certified flameproof electrical network; advanced airflow distribution.
Paint / Coating Workshop	Air-Cooled Chiller + Explosion-Proof AHU	Corrosion-proof components, static-free design, optimized temperature and ventilation balance.
Gas Storage Area	Explosion-Proof Split Unit + Positive Pressure Module	Maintains safe pressurization, prevents hydrocarbon vapor ingress, integrated leak control.
Battery / Energy Material Plant	Precision Air Conditioner + Filtration System	±0.5 °C temperature precision, particulate and VOC removal for lithium and electrolyte handling.
Hazardous Warehouse	Explosion-Proof Dehumidifier + Ventilation Fan	Ensures <60% RH, fresh air exchange for dilution of flammable vapors.

These integrated systems are adaptable to ATEX Zone 1–2 and NEC Class I/II Division 1–2 classifications, providing customized compliance and operational assurance to each site.

04 Technical Data

Technical Specifications of SongXin Explosion-Proof HVAC Systems

To guarantee reliable and efficient operation in hazardous zones, all SongXin HVAC Solutions for Explosion-Proof Environment are manufactured under strict parameter control.

Performance Range

Cooling Capacity: 3 – 600 kW
Heating Capacity: 2.5 – 500 kW
Temperature Setpoint: 18–30 °C, fully customizable
Humidity Control: 40–65% RH regulated range

Safety and Protection

Explosion-Proof Class: Ex d IIB/IIC T3–T4 / Zone 1–2
Enclosure Rating: IP55–IP66, ensuring total protection against dust and water ingress
Construction Materials: 316L stainless steel or epoxy-coated aluminum
Ambient Operation: −25 °C to +55 °C continuous

Power and Electricals

Power Supply: 380–460 V / 3-phase / 50–60 Hz universal compatibility
Control Interface: Modbus / BACnet for smart integration

Why Choose SongXin

Certified Safety: Proven adherence to IECEx, ATEX, and CNEX
Operational Durability: Designed for 24/7 industrial service with minimal maintenance
Corrosion Resistance: Marine-grade coatings and premium materials extend life
Smart Control: Remote integration and predictive monitoring capabilities
Energy Efficiency: Reduced power consumption through inverter and heat recovery systems
Comprehensive Support: End-to-end service — from design through commissioning and lifetime after-sales care

Such comprehensive technical scope allows SongXin equipment to serve as a universal solution for refineries, paint shops, semiconductors, defense plants, or offshore platforms.

05 Product Excellence

Product Highlights — What Makes SongXin HVAC Different

SongXin explosion-proof systems go far beyond compliance. They redefine industrial HVAC safety and reliability through thoughtful engineering.

Explosion-Proof Design

All electrical circuits, control panels, and motor wirings are certified flameproof. The system's enclosures maintain pressure-tight integrity, eliminating the risk of external ignition even in gas-laden atmospheres. Each model complies with Ex d IIB/IIC T3–T4 standards.

Integrated Safety Control

Smart sensors continuously monitor gas concentration, temperature, and internal pressure. In case of anomalies, safety logic initiates auto-shutdown or ventilation increase to stabilize the environment — fostering an intelligent layer of operational defense.

Ventilation & Air Purification

Adjustable air exchange rates promote steady dilution of flammable gases while maintaining positive room pressurization. Optional particulate and activated-carbon filtration modules enhance air quality control for clean and safe production zones.

Anti-Corrosion Protection

The HVAC units are safeguarded with C5M marine-grade coating, acid-resistant tubing, and stainless fasteners to defend against aggressive vapors, salt mists, or chemical exposure. This protection ensures long-term performance in refineries, marine docks, and coating plants.

Easy Serviceability

SongXin units are equipped with front-access service doors and allow tool-free removal of filters or fan modules. Non-sparking tools and guided maintenance zones protect technicians while preserving enclosure integrity.

Power Reliability

Each system incorporates a soft-start inverter to minimize electrical surge and prevent overloads during generator or UPS operation—critical in remote industrial facilities or offshore rigs.

Smart Monitoring & Connectivity

Through built-in communication protocols (Modbus, BACnet), the HVAC systems seamlessly integrate with BMS or SCADA networks. Remote visualization enables data logging, energy optimization, and predictive maintenance alerts for asset managers.

06 Sustainability

Energy Efficiency & Environmental Sustainability

SongXin recognizes that sustainability is as critical as safety in modern industry. Every design integrates energy optimization measures that reduce operational costs while aligning with environmental responsibilities.

25%

Inverter Compressor Technology

Enhances system coefficient of performance (COP) by up to 25% during partial load conditions

30%

Heat Recovery Integration

Reclaims waste heat from condenser circuits, lowering total facility energy expenditure by as much as 30%

Low GWP

Low-GWP Refrigerants

Use of R410A, R1234ze, and R32 drastically reduces greenhouse impact

15%

Smart Ventilation Scheduling

Automatically adjusts fan operation, decreasing mechanical energy consumption by approximately 15% without compromising safety

07 Success Stories

SongXin Proven Global HVAC Reference Projects

SongXin's track record demonstrates reliability across multiple industries and continents. Each project stands as evidence of the brand's engineering depth and installation expertise.

Chemical Synthesis Plant

Deploying explosion-proof packaged DX units with IP66-rated enclosures, these systems operate flawlessly even under 52 °C ambient conditions. The facility benefits from secure temperature control and corrosion-free operation.

Zone 1-2 Certified

Gas Compression Station

Air-cooled chillers and positive-pressure air handling units maintain 25 °C at 80% RH, preventing gas diffusion and ensuring stable humidity during compression cycles.

Positive Pressurization

Battery Material Factory

This project required ultra-precise thermal regulation and volatile organic compound (VOC) filtration. SongXin's Precision Air Control Systems maintained consistent ±0.5 °C accuracy under heavy particulate exposure.

±0.5°C Precision

08 Quality Assurance

Factory Tour & Quality Control

Safety and performance begin with precision manufacturing. Every explosion-proof system undergoes unparalleled quality assurance before delivery.

Comprehensive Testing Protocols

01

Spark Safety Verification

Each unit is tested under simulated gas concentrations to confirm zero ignition probability.

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02

Overpressure & Integrity Tests

Validates enclosure sealing under elevated internal pressures to ensure flame containment.

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03

Thermal Endurance Trials

Continuous 72-hour operating tests at 55 °C verify mechanical and electrical stability.

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04

Electrical Safety Inspections

Include grounding, insulation resistance, short-circuit protection, and component certification checks.

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05

Corrosion Resistance Trial

Exposed to 1,000-hour salt spray to test coating adhesion and anti-rust resilience.

Process Transparency

Client audits and factory acceptance tests (FAT) are supported with complete test documentation, 3D design files, and traceable inspection records. This transparency defines SongXin's engineering credibility and accountability in mission-critical industries.

09 Support Services

SongXin Professional Services

Beyond outstanding products, SongXin HVAC Solutions for Explosion-Proof Environment are complemented by comprehensive engineering and after-sales services that ensure lifecycle productivity.

Explosion-Proof System Design

SongXin engineers provide full technical design support covering airflow simulation, zoning, pressurization control, and thermal balance analysis — configuring the right solution for your site's safety classification.

Certification Consulting

Navigating ATEX, CNEX, or IECEx documentation can be complex. SongXin offers dedicated compliance consulting, assisting clients in dossier preparation, risk evaluation, and certification submission.

Installation Supervision & Training

SongXin experts deliver on-site supervision, system start-up guidance, and operator training, ensuring safe field assembly aligned with approved explosion-proof protocols.

Remote Monitoring

Each installed HVAC system can be linked to SongXin's centralized dashboard, offering live performance analytics, alarm notifications, and automated maintenance reminders to keep operations uninterrupted.

Spare Parts & After-Sales Support

SongXin's procurement network guarantees 48-hour global parts availability, while regional service centers provide 24/7 technical support for minimal downtime and maximum confidence.

SongXin Explosion-Proof HVAC — Safety Without Compromise

Empower your industrial facility with certified environmental control systems that protect workers, production, and assets. Whether you manage a chemical plant, gas terminal, or advanced battery material factory, SongXin delivers the right balance of safety, reliability, and performance.

FAQ Common Questions

Frequently Asked Questions (FAQ)

Q1: Can SongXin units be used in Zone 1 and Zone 2 hazardous areas?

Yes. All SongXin explosion-proof HVAC units comply with ATEX/IECEx Zone 1–2 classifications and are approved for IIB/IIC gas groups.

Q2: How is corrosion handled in areas rich with chemical gases?

Each unit's structure uses stainless-steel casings and epoxy powder coatings, providing long-term immunity to chemical attack, acid mist, or salt spray.

Q3: Do SongXin systems integrate with gas detection devices?

Yes. Gas sensors can be connected directly to the HVAC control network, enabling automatic shutdown or enhanced ventilation during gas leak detection.

Q4: What maintenance is recommended?

Routine filter cleaning every 2–4 weeks and visual inspection of enclosure integrity are suggested. A certified technician should perform a comprehensive check every 12 months.

Q5: Can the system operate under generator or unstable power supply?

Certainly. With soft-start inverters and Power Factor Correction (PFC) design, SongXin systems run stably even under variable generator output, preventing circuit overloads.