In the intricate systems of modern buildings, data centers, and industrial facilities, air is the core driver of efficiency. However, in increasingly complex ventilation environments, are you facing these common challenges?
- High Static Pressure Hurdles:Do your fans lose performance in long ducts, behind dense filters, or through heat exchangers, failing to maintain stable airflow?
- Energy and Cost Drain:Is continuous fan operation driving up your electricity bills and eating into your project’s profitability?
- Maintenance and Reliability:Are frequent breakdowns and maintenance disrupting your operations and leading to unpredictable costs?
We understand these pain points. As a specialized provider of air system solutions, Ningbo Longwell Electric Technology Co., Ltd. has developed the AC backward centrifugal fan series specifically to address these industry challenges. This is not just a product; it is a robust partner for achieving efficient, reliable, and cost-effective air management.
Core Value: Turning Technical Advantages into Business ROI
The exceptional performance of Longwell AC backward centrifugal fans is rooted in four core technical pillars, each of which translates directly into tangible business value for you.
1. Energy Efficiency Beyond Expectations
In the field of fan technology, AC fans are often perceived as less efficient than their EC counterparts. However, leveraging its deep expertise in fluid engineering, Longwell has precisely optimized the geometry of its backward-curved impellers. This design effectively reduces airflow turbulence, pushing the aerodynamic efficiency of AC fans to new heights. This means you can achieve significant energy savings on the AC technology platform without the higher initial investment of EC fans, directly reducing your long-term operational costs.
2. Powerful Performance to Conquer High Static Pressure
Centrifugal fans are inherently designed for high-static-pressure environments, capable of effectively overcoming the resistance of long ducts and complex systems. The Longwell AC backward centrifugal fan series excels in this regard. According to product specifications, specific models can deliver maximum static pressures of up to 714 Pa and 785 Pa. In HVAC systems or Air Handling Units (AHUs), this ensures that even with significant system resistance, the fan can maintain a stable and continuous airflow, precisely delivering conditioned air to every corner of the space.
3. Non-Overloading Characteristic: Say Goodbye to Overload Worries
Longwell AC backward centrifugal fans feature a unique non-overloading characteristic. This means that regardless of changes in system resistance, the fan’s power consumption curve remains stable, avoiding the sharp power increase that causes traditional fans to “overload” in high-resistance situations. This stable operation fundamentally protects the motor and impeller, significantly reducing mechanical stress and ensuring the fan’s smooth operation and long-term durability.
4. Quiet Operation for a Comfortable Environment
In commercial and industrial environments where noise is a critical factor, the low-noise operation of Longwell fans is a major competitive advantage. By optimizing the impeller geometry, we reduce airflow turbulence at the source of the noise. Additionally, every fan undergoes a strict dynamic balancing process to meet the G6.3 balancing precision standard , which effectively minimizes noise from mechanical vibration. This allows the fan to deliver powerful performance while ensuring a quiet and comfortable environment.
Precision Manufacturing: Quality Rooted in Attention to Detail
The outstanding performance of Longwell AC backward centrifugal fans is supported by rigorous engineering design, advanced manufacturing processes, and a stringent quality control system, all of which provide a solid guarantee for your investment.
- Precision Engineering and Materials:The impeller is crafted from high-strength PA66 plastic , a material that offers both lightweight construction and excellent mechanical strength. We utilize advanced fluid simulation technology to maximize performance during the design phase.
- Authoritative Certifications:Our products strictly adhere to numerous domestic and international industry standards, such as GB12350, ISO5801-1997, and others. The IP44 and IP54 protection ratings ensure safe operation in various demanding environments.
- Full-Process Quality Management:Longwell vertically integrates its supply chain, maintaining control over the entire production process from motor winding and impeller optimization to final assembly. We commit to 100% performance testing for every fan before it leaves the factory , minimizing the risk of failure and ensuring high quality and performance.
The Solution: Beyond the Product, to the Application
With their superior performance, Longwell AC backward centrifugal fans are widely used in several key industries, providing robust support for diverse air management needs.
- Building HVAC Systems:As a core component of Air Handling Units (AHUs) and central air conditioning systems , Longwell fans ensure efficient airflow through complex ductwork.
- Data Center Precision Cooling:Cooling accounts for nearly 40% of a data center’s total energy consumption , and heat dissipation is critical for operational reliability. The high-static-pressure performance of Longwell fans effectively overcomes the complex air resistance within server racks , precisely delivering cold air to heat sources. Their high-efficiency characteristics also help clients save significant electricity costs and may even qualify for government subsidies under public building energy-saving initiatives.
- Industrial and Equipment Cooling:In fields with strict airflow stability and reliability requirements, such as clean rooms, telecom base stations, and industrial control cabinets , Longwell fans provide efficient and dependable cooling and ventilation solutions.
The Rational Choice: The Art of Balancing AC and EC
When choosing between AC and EC fans, Longwell understands your considerations. EC fans offer superior energy efficiency and precise speed control , but their higher initial cost and complexity may not be suitable for all projects.
The Longwell AC backward centrifugal fan represents a pragmatic choice based on a rational return on investment. For applications with stable operating conditions where frequent speed changes are not necessary, Longwell AC fans offer a highly efficient, reliable, and cost-effective solution through their optimized design and strict quality control. They strike a perfect balance between performance, reliability, and cost, making them the ideal choice for those who seek high performance with a smart investment.
Partner with Longwell, Empowering Your Future
Ningbo Longwell Electric Technology Co., Ltd. is committed to the brand philosophy of “Professionalism with Craftsmanship.” We are dedicated to becoming your most trusted air system partner. We not only provide standardized products but also possess strong OEM and customized solution capabilities , capable of deep development and production to meet your unique needs. By choosing Longwell, you are partnering with a company that is focused on technology, dedicated to quality, and committed to providing long-term value.
Welcome to contact us for the latest product catalog, technical support, or a customized quote.
Phone: +86 18358274663 Email: sales@zjlongwell.com Website: www.longwellfans.com
Appendix: Key Technical Specifications at a Glance
Model | Rated Voltage (VAC) | Frequency (Hz) | Speed (rpm) | Power Input (W) | Max Airflow (m3/h) | Max Static Pressure (Pa) | Noise Level (dB(A)) | Impeller Material | Protection Class (IP) |
LWBA2E250-092NS-07 | 165~254 | 50 | 2700 | 151 | 1470 | 714 | 72.7 | Plastic PA66 | IP44 |
LWBE3G250-092NS-12 | 176~264 | 50/60 | 3010 | 140 | 1531 | 785 | 72.1 | – | IP54 |
