Aeroclimatiseur pour autobus WL32LY monté sur toit — sélection technique haute capacité
Selection engineering SE-WL32LY | Load calculation, airflow matching and drive-train sizing for 11–12 m buses at 32 kW.
- Praevisio
- Producta Commendata
1. Load Calculation for 11–12 m Buses
An 11–12 m coach at full load in summer carries a thermal load in the 28–36 kW range depending on glazing and occupancy. The WL32LY is selected at 32 kW (109,184 BTU) — above the mid-point of the band, so it holds target temperature at design load without running continuously at maximum duty.
2. Official Technical Data
Parameter |
Valor |
Potentia refrigerationis |
32 kW (109,184 BTU) |
Vehiculum applicabile |
11.0 – 12.0 m bus |
Dimensiones |
4450 × 1865 × 190 mm |
Pondus |
≤ 245 kg |
Voltage |
DC 24V |
Fluxus aeris per evaporatorem |
6 400 m³/h |
Fluxus aeris condensatoris |
12,000 m³/h |
FKX40-650K — 650 cc |
|
Refrigerans |
R134a — 13,0 kg |
Ventilatores condensatoris / evaporatoris |
5 / 8 pcs |
Spiralis condensatoris |
Aleta et tubus (cuprum) |
Evaporator coil |
Aleta et tubus (cuprum) |

Fig. 1 — Official WL32LY technical parameter table (manufacturer's catalogue data)
3. Airflow Matching — 6,400 m³/h
Capacity means nothing if the air does not reach the passengers. Eight ZHF283502 blowers move 6,400 m³/h through the copper-tube evaporator — roughly 200 m³/h per passenger at 32 seats, with reserve for solar gain. This is the airflow figure engineers should check first when upgrading a 24 kW-class unit.

Fig. 2 — WL32LY unit on service cart: long-profile split roof with fan deck

Fig. 3 — Internal detail: copper piping and coil fin section
4. Drive Train Sizing
The FKX40-650K compressor (650 cc) is matched with a 2B/2A clutch and SPB belt, driven with a 150 A Prestolite alternator to hold 24 V system voltage under full electrical load — the configuration list a spec engineer needs for alternator and belt-pulley compatibility checks.

Fig. 4 — Internal assembly: coil, blower and control sections
5. Configuratio kit — Elenco partium (BOM)
Component |
Modello / Faber |
QTY |
Compressor |
FKX40-650K (joint venture) |
1 |
Clutch |
2B / 2A |
1 |
Cingulum |
SPB (Samsung Koreio/Japono) |
1 Set |
150 A (Prestolite USA) |
1 |
|
Ventilator Evaporatoris |
ZHF283502 (societas iuncta) |
8 |
Ventilator condensatoris |
LNF273107C (societas iuncta) |
5 |
Valvula Expansionis |
TGEN7.0T (Danfoss) |
1 |
Vitreum Visibile |
SGN12S (Danfoss Daniamarca) |
1 |
Filtrum desiccans |
Danfoss |
1 |
Tabula Imperii |
LM824 (Liming) |
1 |
6. Buyer FAQ
Q1. Quibus autocamnis WL32LY convenit?
Cocles et autocamnes 11,0–12,0 m quae 32 kW potentiam postulant — summa pars familiae LY.
Q2. Quo differit a WL26LY?
WL32LY ad 32 kW ascendit, cum 8 ventilatoribus evaporatoris (6 in WL26LY), 5 ventilatoribus condensatoris (4), et compressore 650 cc.
Q3. Is the alternator included?
Ita — alternator Prestolite 150 A pars est totius copiae pro subsidio electrico 24 V.
Q4. What refrigerant does it use?
R134a cum 13,0 kg charge fabricae.
Q5. Num coilae loco reparari possunt?
Ita — coilae ex tubis cupreis et lamellis utrinque, a quocumque officina refrigerationis curari possunt.
Adhibe turmam nostram exportatricem
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.
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