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SONGZ SZQ Series Bus Air Conditioner
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SONGZ SZQ Series Bus Air Conditioner

The SZQ Series Articulated Bus Air Conditioner is a high-performance cooling system designed for various bus lengths ranging from 9 meters to 12.9 meters.The series includes multiple models (SZQ-III/F-D, SZQ-IV-D, SZQ-V/F-D, SZQ-VI-D, etc.) with cooling capacities from 20 kW to 40 kW, catering to different bus sizes and climate conditions. Each model is equipped with high-efficiency compressors (4PFCY, 4NFCY, and 4GFCY) with varying displacement capacities, ensuring robust performance.

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    Technical Specification of Bus A/C SZQ Series

    Model:

    SZQ-III/F-D

    SZQ-IV-D

    SZQ-IV/F-D

    SZQ-V-D

    SZQ-V/F-D

    SZQ-VI-D

    SZQ-VI/F-D

    Recommended Bus Length

    9.0~ 9.4 m

    9.5~ 9.9 m

    10.0~ 10.4

    10.5~ 10.9

    11.0~ 11.4

    11.5 ~11.9

    12.0~ 12.9

    Refrigerant Type

    R134a

    Cooling Capacity

    Standard

    26 kW

    28 kW

    30 kW

    31 kW

    33 kW

    35 kW

    37 kW

    Maximum

    28 kW

    30 kW

    33 kW

    34 kW

    36 kW

    38 kW

    40 kW

    Compressor

    Model

    4PFCY

    4PFCY

    4NFCY

    4NFCY

    4NFCY

    4NFCY

    4GFCY

    Displacement

    558 cc/r

    558 cc/r

    650 cc/r

    650 cc/r

    650 cc/r

    650 cc/r

    750 cc/r

    Weight (with Clutch)

    33kg

    33kg

    32kg

    32kg

    32kg

    32kg

    34kg

    Roof

    Dimension (mm)

    3680×1860×188

    3880×1860×188

    3880×1860×188

    4080×1860×188

    4480×1860×188

    4480x1860x188

    4480×1860×188

    Weight

    167 kg

    175 kg

    177 kg

    185 kg

    195 kg

    228 kg

    203 kg

    Air Flow Volume Condenser

    (Fan Quantity)

    6300 m3/h (3)

    8400 m3/h (4)

    8400 m3/h (4)

    8400 m3/h (4)

    8400 m3/h (4)

    10500 m3/h (5)

    10500 m3/h (5)

    Air Flow Volume Evaporator

    (Blower Quantity)

    5400 m3 /h (6)

    5400 m3 /h (6)

    5400 m3 /h (6)

    5400 m3 /h (6)

    7200 m3 /h (8)

    7200 m3 /h (8)

    7200 m3 /h (8)

    Electricity Consumption

    75.5 A (24V)

    76 A (24V)

    76 A (24V)

    76 A (24V)

    92.5 A (24V)

    98A (24V)

    100 A (24V)

    Expansion Valve

    Danfoss

    Danfoss

    Danfoss

    Danfoss

    Danfoss

    Danfoss

    Danfoss

    Lubricant Type

    BSE55

    BSE55

    BSE55

    BSE55

    BSE55

    BSE55

    BSE55

    Features

    01

    Modular Platform Design

    SZR/SZQ series share a common platform with identical evaporator modules and uniform condenser dimensions, enabling complete interchangeability of HVAC units within the same vehicle model.

    02

    Aerodynamic Fan Cowl Design

    Condenser fan cowl uses Archimedean spiral geometry and conical surface design to generate columnar airflow, eliminating hot air recirculation and improving system COP (Coefficient of Performance).

    03

    Premium Material Construction

    Top cover molded with SMC (Sheet Molding Compound) for smooth finish and aesthetic appeal.Evaporator features eco-friendly LFT (Long Fiber Thermoplastic) molded bottom shell, ensuring monolithic structure, consistent quality, and full recyclability.

    04

    Ultra-Thin & Lightweight Architecture

    Central profile thickness of 188mm with inverted V-shaped condenser base and bottomless structure, combined with molded composite shell for optimized weight reduction.

    05

    Serviceability Optimization

    Hinged top cover allows partial access during installation, eliminating full removal and reducing setup time.Condenser fans install from top-to-bottom for tool-free replacement; evaporator fan maintenance requires only partial side cover removal.

    06

    SZQ Series Technical Advantage

    SZQ models adopt parallel flow condensers, delivering lighter weight without compromising thermal performance.

    Functions Upgrade(Optional)

    In addition to the basic functions of refrigeration, heat pump heating and ventilation, the product can also upgrade the following functions according to customer and environmental requirements:

    01 /

    Auxiliary evaporator

    The driver's cabin front evaporator and sleeping compartment evaporator can be added according to customer needs to provide a more comfortable working environment for the driver.
    02 /

    Control upgrade

    Integration of control panel and vehicle instrument panel, facilitating centralized layout of vehicle control; Add remote control function for product control to facilitate customer operation and management.
    03 /

    Water heating system

    The water heating pipeline can be led out from the evaporator core to achieve the heating function of the air conditioner, meeting the requirements of cold regions for the ambient temperature inside the car.
    04 /

    Air purification function

    It includes four major functions: electrostatic dust collection, ultraviolet light, strong ion generator, and photocatalyst filtration. It can achieve uninterrupted disinfection, sterilization, deodorization, and efficient dust removal at all times, effectively blocking the transmission route of viruses.
    05/

    "Cloud Control" Function

    Achieve remote control and diagnosis, enhance product services and monitoring capabilities through big data applications.
    06/

    Energy regulation function

    According to the temperature inside the car and the environment, the flow rate of the fan and compressor is adjusted in multiple stages to reduce frequent start stop of the compressor, improve overall passenger comfort, and ensure more efficient operation of the system.