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LTG Aktiengesellschaft
Swirl Diffusers Type DLA

Swirl Diffusers Type DLA

Product catalog summary

Swirl Diffusers Series DLA Overview

Application: The Swirl Diffusers Series DLA is designed for direct ventilation in commercial and industrial spaces with high air exchange needs due to thermal loads, such as restaurants, shopping centers, and laboratories.

Installation/Positioning: These diffusers can be integrated into ceilings or suspended freely, with a recommended installation height of 2.5 to 5 meters.

Functionality: The diffusers utilize a highly inductive, fanned rotational flow to manage high cooling loads while maintaining comfortable air conditions. The aerodynamic swirl disc is adjustable to suit varying room conditions.

Flow Types: The swirl disc can be set for tangential or vertical flow. Tangential flow results in a mixed turbulent flow structure, while vertical flow projects air conically downwards, ideal for heating mode and high rooms.

Advantages: The diffusers offer high comfort due to low air speeds, economical installation, easy flow rate regulation, and a wide range of design features. They are constructed entirely of metal for easy cleaning and durability.

Product Overview: The DLA series includes types DLA 7, DLA 8, and DLA 9, each suited for different environments and flow rates. All models support tangential flow, while vertical flow is available for specific models.

Dimensions and Design: Available in square and round models with various diffuser plate designs. Air supply boxes are available in rectangular, pyramid, or cylindrical forms, made from galvanized sheet steel.

Selection Diagrams: Detailed selection diagrams are provided for each DLA type, illustrating flow rates, pressure loss, and sound power levels for different settings and installation heights.

Installation: Guidelines are provided for installing swirl diffusers with different box types and connections, emphasizing ease of installation and adjustment.

Specifications:

Volume Flow (V): Measured in cubic meters per hour (m3/h), with recommended values varying by model.
Pressure Loss (Δp): Expressed in Pascals (Pa), indicating the resistance to airflow.
Sound Power Level (LWA): Measured in decibels (dB(A)), with adjustments based on diffuser settings.
Temperature Difference (Δt): The difference between supply air and room air temperatures, measured in Kelvin (K).
Installation Height (H): Recommended height for diffuser installation, ranging from 2.5 to 5.0 meters depending on the model.

Models and Recommendations:

Model 500: Recommended volume flow of 300 m3/h, installation height of 2.5 to 5.0 meters, and a distance between diffusers of 3.0 to 3.5 meters.
Model 600/625: Recommended volume flow of 500 m3/h, with similar installation height and distance recommendations as Model 500.
Model 800: Recommended volume flow of 750 m3/h, with installation and distance guidelines consistent with other models.

Installation Guidelines: The diffusers can be installed flush to the ceiling, covering joints in intermediate ceilings, or freely suspended. The diffuser plate is attached to the air supply box using screws.

Nomenclature: The document provides a detailed breakdown of the naming conventions for different diffuser models, including size, form, surface finish, and connection types.

Contact Information: The document lists contact details for LTG Aktiengesellschaft's offices in Germany and international representatives in countries such as Austria, Great Britain, Netherlands, Poland, Portugal, Switzerland, and Turkey.

Additional Information: The document also mentions LTG's engineering services and other product offerings, including air diffusers, fan coil units, and components for lab ventilation.

Specifications:

Models: Available in various sizes (400, 500, 600, 625, 800) depending on the type.
Diffuser Plate: Made of galvanized steel, available in square or round shapes, with powder coating options in RAL 9010 pure white or RAL 9011 graphite black.
Swirl Disc: Built-in for turbulence-free and noiseless air guidance, adjustable post-installation, with color options.
Air Distribution Box: Made of galvanized steel, available in rectangular, pyramid, or cylindrical shapes.
Connection Socket: Standard lateral round, with options for top round connections.
Flow Restrictor: Adjustable from below, with an option to exclude.

Special Versions and Accessories:

Custom color options for diffuser plates and swirl discs.
Adapters available for different diffuser plate sizes and box types.

Pricing: The document includes a schedule of prices, but specific unit and total prices are not detailed in the provided text.

Manufacturer Information: LTG Aktiengesellschaft, located in Stuttgart, Germany, is the manufacturer of these swirl diffusers.

Catalog excerpts

Technical Documentation Swirl Diffusers Series DLA Example: Type DLA 9 with rectangular box LTG Aktiengesellschaft D - 70435 Stuttgart, Grenzstraße 7 +49 (711) 82 01-0, Fax +49 (711) 82 01-720 Internet: www.LTG-AG.de E-Mail: [email protected] LTG Incorporated 105 Corporate Drive, Suite E Spartanburg S.C., 29303 USA +1 (864) 599-6340, Fax +1 (864) 599-6344 Internet: www.LTG-INC.net E-Mail: [email protected]

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The Innovation Company LTG Aktiengesellschaft Swirl diffusers series DLA Content Application, installation/positioning, functionality, flow types, advantages Product overview Dimensions air distribution boxes Selection diagrams type DLA 7 Selection diagrams type DLA 8 Selection diagrams type DLA 9 Notes Dimensions stated in this brochure are in mm. Dimensions stated in this brochure are subject to General Tolerances according to DIN ISO 2768-vL. Straightness and twist tolerances for extruded aluminum profiles according to DIN EN 12020-2. You will find the actual tender documentations at the end...

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The Innovation Company LTG Aktiengesellschaft Swirl diffusers series DLA Application Direct ventilation of occupied zones in commercial and industrial facilities which require high air exchange rates because of thermal loads, e.g. restaurants, shopping centers, laboratories. Highly inductive air diffuser with swirl characteristics. Economical installation, thanks to Integration in the ceiling or free suspension. Recommended installation height: 2.5 ... 5 meters. Functionality The highly inductive, fanned rotational flow makes it possible to handle high cooling loads and still maintain comfortable...

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The Innovation Company LTG Aktiengesellschaft Swirl diffusers series DLA Product overview DLA 7 Primarily for use in convenience areas (e.g. offices, meeting rooms) Primarily for use in convenience areas with high flow rates (e. g. conference rooms, halls) Primarily for use in areas requiring high air exchange rates due to thermal load (e. g. shopping centers, restaurants, labs) Flow rate [m³/h] Flow type Diffuser plate Basic version: visible side powder coated to RAL reference Special version (e. g. anodized, chrome-plated, stainless steel) on request Swirl disc Design Basic version: coated...

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The Innovation Company LTG Aktiengesellschaft Swirl diffusers type DLA 7 Views of unit Flow types Tangential setting 1 and 2 Swirl disc Diffuser plate Vertical setting Swirl disc Diffuser plate Type DLA 7 with rectangular box The swirl disc can be set for two flow types : the tangential flow 1 and 2, or vertical flow. With the tangential flow 1 (standard setting) the air jets will attach strongly to the ceiling resulting in a fully mixed turbulent flow structure in the room, with rapid temperature and velocity decay of the jet. Tangential setting 2 is preferably used for lower flow rates and...

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The Innovation Company LTG Aktiengesellschaft Swirl diffusers type DLA 8 Views of unit Flow types Swirl disc Diffuser plate Tangential flow Swirl disc Type DLA 8 with rectangular box Diffuser plate Vertical flow The swirl disc can be set for two flow types: the tangential flow or vertical flow. With the tangential flow (standard setting), the air jets will attach strongly to the ceiling resulting in a fully mixed turbulent flow structure in the room, with rapid temperature and velocity decay of the jet. Type DLA 8 with pyramid box Flow development with tangential setting With the vertical flow,...

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The Innovation Company LTG Aktiengesellschaft Swirl diffusers type DLA 9 View of unit Flow types Tangential setting Swirl disc Diffuser plate Vertical setting Swirl disc Diffuser plate Type DLA 9 with rectangular box The swirl disc can be set for two flow types: the tangential flow or vertical flow (vertical flow only for models 600/625). With the tangential flow (standard setting), the air jets will attach strongly to the ceiling resulting in a fully mixed turbulent flow structure in the room, with rapid temperature and velocity decay of the jet. Flow development with tangential setting With...

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The Innovation Company LTG Aktiengesellschaft Swirl diffusers series DLA Dimensions air distribution box DLA with rectangular box and lateral connection for round supply ducts Model ** 595 respectively 620 for installation in grid ceiling [QE] + DLA with rectangular box and connection from above for round supply ducts Model ** 595 respectively 620 for installation in grid ceiling [QE] DLA with rectangular box and lateral connection for round supply ducts and adapter for round diffuser plate E LTG Aktiengesellschaft Grenzstraße 7 D-70435 Stuttgart +49 (711) 8201-0 Fax -720 Internet: www.LTG-AG.de...

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The Innovation Company LTG Aktiengesellschaft Swirl diffusers series DLA Dimensions air distribution box DLA with pyramid box and lateral connection for round supply ducts 400 ** 595 respectively 620 for installation in grid ceiling [QE] G *** box executed as pyramid stump DLA with pyramid box and lateral connection for round supply ducts and adapter for round diffuser plate Model ** box executed as pyramid stump - Minimum loss of energy on the surface. - Stacking boxes with a minimum transport volume. - Integrated flow restrictor, to be adjusted from below, through the diffuser. Delivery in...

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The Innovation Company LTG Aktiengesellschaft Swirl diffusers series DLA Dimensions air distribution box DLA with cylindrical box and lateral connection for round supply ducts Model Type DLA with cylindrical box and connection from above for round supply ducts ØB E LTG Aktiengesellschaft Grenzstraße 7 D-70435 Stuttgart +49 (711) 8201-0 Fax -720 Internet: www.LTG-AG.de E-Mail: [email protected] Printed in Germany · Former editions are invalid · Subject to technical modifications

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The Innovation Company LTG Aktiengesellschaft Swirl diffusers type DLA 7 Selection diagram for DLA 7 with KLS, model 400, spigot 199 mm, tangential setting exhaust air mode 90_ Legend V = with swirl disc + 8 dB without swirl disc - 12 dB volume flow temperature difference between supply air and room air pressure loss sound power level a(cmax)= spread at which the maximum speed of the jet air has been measured [m] cmax H maximum speed of jet air with uniformly distributed heat loads installation height Stated acoustics at tangential setting 1 Note: The stated LWA-values are valid for the tangential...

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.

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