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WL32D Electric Bus Air Conditioner — Integrated Thermal Management
Thermal management file TM-WL32D | The largest electric-bus roof unit in the WL-D family: high-capacity cabin cooling plus battery thermal-management integration.
- Overview
- Recommended Products
1. Beyond Cabin Cooling — Thermal Management
For a 10.5–12.0 m electric bus, the AC system does double duty: it cools the cabin and supports the battery thermal-management loop. The WL32D is sized at 24 kW standard / 32 kW maximum cooling with 6,000 m³/h evaporator airflow — capacity headroom that lets the same thermal system serve cabin comfort without starving the battery cooling circuit.
2. Official Technical Data
Parameter |
Value |
Cooling capacity |
24 kW (std) / 32 kW (max) |
Applicable vehicle |
10.5 – 12.0 m electric bus |
Input voltage |
DC 300 – 750 V |
Power consumption |
≤ 17 A (380 V) |
Evaporator airflow |
6,000 m³/h |
Condenser airflow |
10,000 m³/h |
Scroll type, variable frequency |
|
Refrigerant |
R407c |
Dimensions |
3308 × 1907 × 260 mm |
Weight |
≤ 310 kg |
Condenser / evaporator fans |
5 / 6 pcs (brushless) |
Fig. 1 — WL32D unit on service cart (external view)
3. The Compressor Core
The WL32D uses a horizontal variable-frequency scroll compressor (Copeland-type) — the same technology class trusted by major EV bus builders for its quietness and efficiency. Driven through a CV800-D032 frequency converter, it modulates capacity to match both cabin load and battery-loop demand.
Fig. 2 — Scroll compressor and piping in the system bay
4. Thermal Management Components
Component |
Configuration |
Frequency converter |
CV800-D032 |
Four-way valve |
DC 24V reversing |
Plate heat exchanger |
Danfoss (vertical) |
PTC heater |
Integrated |
Expansion valve |
Electronic (Danfoss) |
Drier filter |
Bidirectional |
Condenser fans |
Brushless × 5 |
Evaporator blowers |
Brushless × 6 |
5. Installation & Roof Opening
Fig. 3 — Manufacturer's roof-opening drawing: cut-outs and mounting points (mm)
6. Buyer FAQ
Q1. Which buses does the WL32D fit?
10.5–12.0 m electric buses and high-capacity EV shuttles with DC 300–750 V traction systems.
Q2. Does it integrate with the battery cooling loop?
Yes — the thermal architecture supports battery-loop heat rejection alongside cabin cooling.
Q3. What compressor does it use?
A horizontal variable-frequency scroll compressor (Copeland-type), driven by a CV800-D032 converter.
Q4. What refrigerant does it use?
R407c with 7.4 kg charge.
Q5. Is heating included?
Yes — PTC heating and heat-pump mode via reversing four-way valve.
Contact Our Export Team
Hunan Weili Auto Parts Appliance Co., Ltd. — founded in 2007, ISO 9001 & IATF 16949 certified manufacturer of bus & truck AC parts, electric fans, blowers, lighting and alternator components.
WhatsApp / WeChat: +86-18670382782 | Landline: +86-0731-82034997 / 82034998
E-Mail: [email protected] | Websites: www.weilipart.com | www.weiliautomotive.com | www.cooliparts.com
Send us your OEM part number, vehicle model or drawing — we will reply within 24 hours with a quotation and technical data sheet.
