Analysis of Smart Farm Crossflow and 115V Scenario of Rail Transit Project: Technical Adaptation and Advantages of PBM's Fan Solution

With the rapid development of smart farming and rail transportation, the fan as the core ventilation equipment, the specificity of its application scenario puts forward higher requirements for product performance. This paper focuses on the intelligent farm cross-flow fan and rail transit project 115V ventilation system. This paper focuses on two major scenarios, combining PBM's product matrix and technical advantages, and analyzes the industry's pain points and solutions.

1. application scenario specificity analysis 

1.1 Intelligent farm cross-flow fan: harsh environment and precise temperature control needs 

Intelligent farms, cross-flow fans need to cope with high humidity, dust particles, corrosive gases, and so on, Dust particles, corrosive gases and other complex environments (such as grain storage, greenhouses, etc.), while meeting the following core requirements: 

• Airflow uniformity: cross-flow fans need to ensure the distribution of airflow in the crop growth area. Airflow uniformity: cross-flow fans need to ensure even airflow distribution in growing areas to avoid localized temperature/humidity imbalances.
• Low noise and energy saving: farms often run 24 hours a day, so energy-efficient EC motors reduce energy costs, and the quiet design avoids disturbing plant and animal growth.
• Dust and corrosion resistance: IP55 protection can resist dust, pesticide vapors and humidity corrosion in the agricultural environment, prolonging the life of the equipment.

1.2 115V Ventilation System for Rail Transit Projects: High Voltage Heat Dissipation and Extreme Working Conditions Challenges 

The ventilation system for rail transit (e.g., subway tunnels) needs to be operated at a high voltage (115V), high temperature, and high vibration. 115V), high temperatures, and frequent vibration under extreme conditions, specific challenges include: 

High temperature and explosion-proof: tunnel fire need to withstand 150 ℃ heat 1 hour High-temperature and explosion-proof: the tunnel needs to withstand high temperatures of 150°C for one hour or more in case of fire, and an explosion-proof design is required to avoid the risk of sparks.

Dynamic Load Adaptation: Changes in train operating density (e.g., peak/trough times) require fans to automatically adjust airflow to reduce ineffective energy consumption.

Space constraints and maintenance convenience: compact design needs to be adapted to the narrow installation space, modular structure to facilitate rapid maintenance.

2. PBM product technology advantages and scenarios to adapt to the program 

2.1 Intelligent farm cross-flow fans: customized EC drive and aerodynamic optimization 

Cross Flow Fans Uniform air supply: Cylindrical impeller design eliminates airflow turbulence, with precise speed regulation of EC motor, realizing ±0.5℃ temperature control accuracy in greenhouse greenhouses.

Anti-corrosion design: stainless steel impeller and FRP shell (such as PC30B24300B model) to resist pesticide vapor corrosion, IP55 protection level to ensure long-term stable operation.

Intelligent IOT: Integrated RS485 Modbus interface supports remote monitoring of fan status and linkage of temperature and humidity sensors to automatically adjust operating parameters.

2.2 115V system for rail transit projects: high pressure-resistant EC motor and frequency conversion cooperative control 

Backward curved centrifugal fan (e.g. PB3N190B85U3) : 

High-voltage and high-efficiency: aerodynamically optimized impellers with an output air volume of up to 12,000 m³/h at 115 V and a 20% increase in air pressure compared to conventional designs.

Resistant to extreme environments: Dual surface treatment processes (e.g. ceramic coating) support -40℃ low-temperature start-up and 150℃ high-temperature continuous operation, which is suitable for the needs of subway tunnel smoke exhaust.

Intelligent frequency conversion: EC motor closed-loop feedback system matches load changes in real time, reducing energy consumption by 50% and noise by ≤45dB compared with traditional AC motors. 

2.3 Full Scenario-covered synergistic technology highlights 

EC motor core technology: 

Efficiency breaks through 90%, supports constant air volume/speed mode, avoids the power loss of traditional frequency converter. and Electromagnetic interference.

Integrated PID controller and thermal control sensor, realizing adaptive adjustment under unattended operation, reducing operation and maintenance costs by more than 30%.

Modular design: centrifugal fan with bracket, tangential blower and other products support rapid disassembly and assembly to meet the needs of narrow space in rail tunnel and flexible layout of farm equipment.

3. Industry Cases and Benefit Verification 

3.1 Intelligent Farm Application Cases 

A grain storage project adopts the PBM cross-flow fan PC30B24300B, and realizes benefit enhancement through the following improvements: 

Energy Consumption Reduction : EC motor maintains 85% efficiency under non-full load condition, saving about 120,000 RMB in annual electricity cost.

Failure rate reduction: IP55 protection + self-cleaning blade design extends the equipment maintenance cycle from 3 months to 1 year.

3.2 Railway transportation project practice 

A Moscow metro line uses PB3N190B85U3 centrifugal fans, and the results include: 

Emergency performance meets standards : Continuous smoke exhaust under fire conditions for 1.5 hours, exceeding the national standard requirements by 50%.

Intelligent management: Remote monitoring of fan status through the BAS system, fault response time reduced to 10 minutes.

4. Future Technology Layout: Upgrading from Product to Ecology 

PBM will continue to deepen material innovation (e.g. carbon fiber impeller weight reduction of 30%) and digital twin technology , empowering the industry through the following path: 

AI predictive maintenance: based on vibration and temperature data modeling, early warning of bearing wear and other failures.

Collaborative control of multiple turbines: Dynamic distribution of airflow among groups of turbines in large-scale smart farms, increasing overall energy efficiency by another 15%.

5. Conclusion 

In the upgrade of ventilation systems for smart agriculture and rail transportation, PBM, with its EC motor technology, scenario-based product matrix and intelligent control ecology, PBM has provided the industry with efficient, reliable and low-maintenance solutions. In the future, PBM will continue to promote the green ventilation revolution with technological innovation and help customers around the world realize the goal of sustainable development.