Air principle
From outlet to occupied zone.
At the outlet
Two air jets per discharge chamber, whirling against each other. (DS 4029e p. 2)
In the room
One stable linear jet, angled approx. 15° upward, with high induction and a long penetration depth: 4 – 9 m for the WL-1, up to 16 m for the WL-3. (DS 4029e p. 2–3)
Construction
A discharge element with several discharge chambers and inlet openings. Behind it a plenum box with spigot, or the element sits directly in the bottom of a supply duct. (DS 4029e p. 2–5)
Smoke test
Airflow in the Krantz lab.
A real smoke test in the Krantz flow laboratory: this is how air leaves the WL.
Technical data WL
- Discharge height
- WL-1: 2.6 – 4 mp. 3
- Max. ΔT cooling
- −8 Kp. 3
- Volume flow
- WL-1: 100 – 350 m³/hp. 3
Krantz Components, Linear whirl outlet WL, DS 4029e 05.2026.
Page numbers are PDF pages of the data sheet.
Download documents
Air
| Property | Value · Source |
|---|---|
| Air distribution | turbulent mixing ventilation; two counter-whirling jets per chamber DS 4029e p. 2 |
| Volume flow | WL-1: 100 – 350 m³/h · WL-2: 100 – 500 m³/h · WL-3: 400 – 1 100 m³/h p. 3 |
| Min. volume flow close below the ceiling | 50 m³/h at < 0.5 m from the ceiling p. 3 |
| Max. ΔT cooling | −8 K p. 3 |
| Max. ΔT heating | +5 K (≥ 30 % of return air extracted at floor level) to +8 K (> 50 %) p. 3 |
| Discharge height | WL-1: 2.6 – 4 m · WL-2: 2.6 – 5 m · WL-3: 4 – 6 m (min. 1 m below the ceiling) p. 3 |
| Jet length | WL-1: 4 – 9 m · WL-2: 4 – 11 m · WL-3: 8 – 16 m p. 3 |
| Example | WL-1, 350 m³/h, unlined box: LWA 44 dB(A); office, 300 m³/h: 40 dB(A), 40 Pa p. 6 |
Design
| Property | Value · Source |
|---|---|
| Length / weight | element WL-1 1 000 · WL-2 1 038 · WL-3 1 100 mm; with plenum box 13 · 24 · 26 kg p. 4 |
| Slim version | height 100 · 140 · 260 mm p. 4 |
| Material | galvanised sheet steel; face and chambers optionally painted to RAL p. 11 |
| Connections | plenum box with spigot (front, top or rear), optionally acoustically lined and with damper; or directly in the bottom of a supply duct; slim version also on a pressure plenum via perforated screen p. 2 |
| Option | three extra swirl diffusers in the bottom: max. volume flow approx. 15 % higher (on request) p. 11 |
Versions and sizes
Three sizes and a slim version.
WL-1 (1 000 mm) · WL-2 (1 038 mm) · WL-3 (1 100 mm) (DS 4029e p. 4)
Slim version
for shallow plenums, height 100 · 140 · 260 mm (p. 10).
Finish
galvanised; face and chambers optionally in RAL (p. 11)
Location
on or in the wall, or behind a wall lining; also in the ceiling (DS 4029e p. 2–3)
Applications
Where it belongs.
Offices, restaurants, meeting rooms, lobbies and entrance halls, workshops, production halls and sports halls (DS 4029e p. 2). The data sheet names the Kursaal in Ostend as a Krantz reference (p. 9).
When not: If the air must reach further than 16 m, look at the DW-V2 (throw up to 50 m, DS 1235e p. 15).
Related in the collection
Same family, a different character.
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