Electric Bus Air Conditioner

Product Showcase & Rigorous Testing

Dynamic Effects Showcase & Technical Architecture

Real-World Applications

Full DC inverter heat pump air conditioner, suitable for 6 – 12m pure electric buses, hybrid buses and fuel cell buses (basic platform).

Specification

Basic Model	NBEAC-21	NBEAC-24	NBEAC-30	NBEAC-34
Structural Form	Roof-mounted Integrated
Applicable Bus Length(m)	6~7	7~8.5	9~10	10~12
Cooling Capacity（KW)	18	26	30	32
Heating Capacity(Heat Pump )(KW)	20	28	36	38
Evaporator Airflow Volume（M/h3）	3200	3200	4800	7200
Condenser Airflow Volume（M/h3）	4800	6000	8000	1000
Compressor numbers	Single	Single/Dual
Refrigerant	R407C/410A
Size(LWH,mm)	26101600270	2500×1920×280	27501920280	30001920270
Unit Weight(kg)	150	230	250	275

Roof-mounted air conditioning and battery thermal management system integration(compact integration)
Suitable for pure electric buses, hybrid buses, and fuel cell buses equipped with liquid-cooled batteries, meeting the needs for both air conditioning cooling/heating and battery cooling/heating.

Specification

Basic Model	NBEAC-21-T	NBEAC-24-T	NBEAC-30-T	NBEAC-34-T
Structural Form	Roof-mounted Integrated
Applicable Bus Length(m)	6~7	7~8.5	9~10	10~12
Cooling Capacity（KW)	18	26	30	32
Heating Capacity(Heat Pump )(KW)	20	28	36	38
Battery Side Driving Cooling Capacity (KW)	3/5	3/5	3/5	3/5
Battery Side Charging Cooling Capacity (KW)	5	8	8	8
Evaporator Airflow Volume（M/h3）	3200	3200	4800	7200
Condenser Airflow Volume（M/h3）	4800	6000	8000	1000
Compressor numbers	Single	Single/Dual
Refrigerant	R407C/410A
Size(LWH,mm)	26101600270	2500×1920×280	27501920280	30001920280
Unit Weight（kg）	180	260	250	275

Electric Bus HVAC System: Advanced Solutions for Modern Transit

1. Superior Comfort

CFD-Optimized Airflow Design

Utilized computer-aided engineering (CAE) to simulate and optimize air duct performance, ensuring balanced airflow distribution and optimal thermal comfort across the passenger cabin.

European Comfort Curve Integration

Proprietary temperature-humidity control system developed in collaboration with research teams, aligning with EU comfort standards to deliver precision climate management.

Acoustic Engineering Breakthroughs

Optimized evaporator/condenser fan motors and blade geometry, reducing operational noise by 15% (compared to industry averages).
Integrated silencer technology in refrigerant pipelines, minimizing compressor pulse noise and vibration by 22 dB(A).

2. Energy Efficiency

Adaptive Variable Displacement Control

Synergizes variable-capacity compressor technology with PWM fan speed regulation, achieving 18% energy savings during partial-load operations.

Precision Electronic Expansion Valve (EEV)

Dynamically adjusts refrigerant flow based on real-time cabin/ambient temperature differentials, optimizing COP (Coefficient of Performance).

Fuzzy Logic Energy Management

AI-driven algorithm unloads compressors and modulates component speeds during stable conditions, maintaining thermal comfort while reducing power consumption.

Low-Temperature Enhancement

Vapor injection technology resolves heat pump inefficiencies below freezing, delivering 30% lower daily energy use at -10°C versus conventional systems.

3. Safety & Reliability

Multi-Layer Power Protection

DC-DC converter with OVP/OCP/SCP (Over-Voltage/Current/Short-Circuit Protection) ensures safe operation up to 65°C ambient.
High-voltage PTC heaters feature IGBT control with dry-burn prevention and comprehensive fault diagnostics.

Electromagnetic Compatibility (EMC)

360° shielding and equipotential bonding system meets GB/T 18655 Class I standards, ensuring immunity to EV-specific EMI environments.

Automotive-Grade Durability

IP67-rated components (compressors, connectors) withstand submersion and harsh vibrations, exceeding automotive reliability benchmarks.

4. Smart Integration

Multi-Modal Control Interface

Supports infrared, Bluetooth 5.0, Wi-Fi 6, and voice command integration for seamless operation across driver/passenger scenarios.

IoT-Enabled Cloud Platform

Real-time telemetry via 4G/5G networks enables predictive maintenance, performance analytics, and remote diagnostics through dedicated PC/mobile apps.

5. Lightweight Architecture

Full DC Inverter System

Reduced compressor-inverter combined weight to 15kg (68% lighter than conventional units), contributing to 30% overall system weight reduction.

Advanced Composite Materials

SMC (Sheet Molding Compound) and LFT-D (Long Fiber Reinforced Thermoplastic Direct) construction cuts component weight by 20% versus steel alternatives.

Modular Framework Design